@article{EdelSchaper1992, author = {Edel, Karl-Otto and Schaper, M.}, title = {Fracture mechanics fatigue resistance analysis of the crack-damaged tread of overbraked solid railway vehicles}, series = {In: Rail international Vol. 23 (1992) 11, pp 35-49}, journal = {In: Rail international Vol. 23 (1992) 11, pp 35-49}, issn = {0020-8442}, pages = {35 -- 49}, year = {1992}, language = {en} } @inproceedings{Edel1993, author = {Edel, Karl-Otto}, title = {Mit Rissen leben? : Zur Betriebssicherheit rissgesch{\"a}digter Bauteile; ein Vortrag, gehalten am 14. April 1993 in der FH Brandenburg}, publisher = {Fachhochsch. Presse- und {\"O}ffentlichtkeitsarbeit}, address = {Brandenburg}, pages = {69 S.}, year = {1993}, subject = {Bauwerk}, language = {de} } @book{Edel1995, author = {Edel, Karl-Otto}, title = {Querrisse im Radkranz klotzgebremster G{\"u}terwagenvollr{\"a}der}, publisher = {Fachhochsch., Presse- und {\"O}ffentlichkeitsarbeit}, address = {Brandenburg}, pages = {67 S.}, year = {1995}, language = {de} } @book{LuethyEhret2014, author = {L{\"u}thy, Anja and Ehret, Tanja}, title = {Krankenh{\"a}user als attraktive Arbeitgeber : Mitarbeiterkultur erfolgreich entwickeln}, publisher = {Stuttgart}, address = {Kohlhammer}, isbn = {978-3-17-020485-0}, pages = {227 S.}, year = {2014}, subject = {Krankenhaus}, language = {de} } @book{OPUS4-666, title = {Social Media und Online-Kommunikation f{\"u}r das Krankenhaus : Konzepte, Methoden, Umsetzung}, editor = {L{\"u}thy, Anja}, publisher = {MWV Medizinisch Wissenschaftliche Verl.-Ges.}, address = {Berlin}, isbn = {978-3-95466-009-4}, pages = {XIX, 347 S.}, year = {2014}, subject = {Onlinecommunity}, language = {de} } @article{HerrmanAuthMoellmannetal.1993, author = {Herrman, K. H. and Auth, J. and M{\"o}llmann, Klaus Peter and Tomm, J. W. and Bottner, H. and Lambrecht, A. and Tacke, M. and Kolesnikov, V. and Yunovich, A. E. and Fedorenko, A. I. and Mironov, O. A. and Sipatov, A. Yu}, title = {Band offsets in Eu-containing lead chalcogenides and lead chalcogenide superlattices from spectroscopic data}, series = {In: Semiconductor Science and Technology Vol. 8 (1993) 1S, pp S176-S179}, journal = {In: Semiconductor Science and Technology Vol. 8 (1993) 1S, pp S176-S179}, issn = {1361-6641}, doi = {10.1088/0268-1242/8/1S/040}, pages = {S176 -- S179}, year = {1993}, abstract = {The results of an experimental study of the optical and photoelectrical properties of Eu-containing lead chalcogenides and superlattices are presented. From both sets of experiments band offset data for the lead chalcogenide-europium chalcogenide heterojunction are derived. The results are compared with the data obtained from a linear interpolation of the band structures between those of the binaries.}, language = {en} } @inproceedings{SchmidtMoellmannMuilwijketal.2002, author = {Schmidt, V. and M{\"o}llmann, Klaus-Peter and Muilwijk, F. and Stoppiglia, H.}, title = {Radiation thermometry on aluminium}, series = {In: Proc. of the ALUMEX Conference, Dubai, December 10 - 12, 2002}, booktitle = {In: Proc. of the ALUMEX Conference, Dubai, December 10 - 12, 2002}, year = {2002}, language = {en} } @article{SchmidtMoellmannMuilwijketal.2002, author = {Schmidt, V. and M{\"o}llmann, Klaus-Peter and Muilwijk, F. and Kalz, S. and Stoppiglia, H.}, title = {Radiation thermometry on aluminium}, series = {In: Aluminium : international journal for industry, research and application 78(2002), 897-901}, journal = {In: Aluminium : international journal for industry, research and application 78(2002), 897-901}, issn = {0002-6689}, pages = {897 -- 901}, year = {2002}, language = {en} } @inproceedings{MoellmannLooseLutzetal.2003, author = {M{\"o}llmann, Klaus-Peter and Loose, Harald and Lutz, Norbert and Pinno, Frank}, title = {Emissionsgradkompensierte Temperaturmessung an hochreflektierenden Leichtmetalloberflachen}, series = {In: Temperatur 2003 : [Verfahren und Ger{\"a}te in der Temperatur- und Feuchtemesstechnik] ; Tagung Berlin, 8. und 9. September 2003 / VDI-VDE-Gesellschaft Mess- und Automatisierungstechnik. - D{\"u}sseldorf : VDI-Verl., 2003. - (VDI-Berichte , ISSN 0083-5560 ; 1784). - ISBN 3-18-091784-9}, booktitle = {In: Temperatur 2003 : [Verfahren und Ger{\"a}te in der Temperatur- und Feuchtemesstechnik] ; Tagung Berlin, 8. und 9. September 2003 / VDI-VDE-Gesellschaft Mess- und Automatisierungstechnik. - D{\"u}sseldorf : VDI-Verl., 2003. - (VDI-Berichte , ISSN 0083-5560 ; 1784). - ISBN 3-18-091784-9}, pages = {179 -- 186}, year = {2003}, language = {de} } @inproceedings{VollmerMoellmann2011, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {IR Imaging of CO~2: Basics, Experiments, and Potential Industrial Applications}, series = {In: Sensor + Test Conferences 2011 : N{\"u}rnberg Exhibition Centre, Germany, 7. - 9.6.2011 ; [including] SENSOR 2011, 15th International Conference on Sensors and Measurement Technology, OPTO 2011, photonic metrology, 10th International Conference on Optical Technologies for Sensing and Measurement, IRS2 2011, 12th International Conference on Infrared Sensors \& Systems ; short proceedings / AMA Fachverband f{\"u}r Sensorik e.V. - Wunstorf/Germany : AMA Service GmbH, 2011. - ISBN 978-3-9810993-8-6}, booktitle = {In: Sensor + Test Conferences 2011 : N{\"u}rnberg Exhibition Centre, Germany, 7. - 9.6.2011 ; [including] SENSOR 2011, 15th International Conference on Sensors and Measurement Technology, OPTO 2011, photonic metrology, 10th International Conference on Optical Technologies for Sensing and Measurement, IRS2 2011, 12th International Conference on Infrared Sensors \& Systems ; short proceedings / AMA Fachverband f{\"u}r Sensorik e.V. - Wunstorf/Germany : AMA Service GmbH, 2011. - ISBN 978-3-9810993-8-6}, pages = {240}, year = {2011}, language = {en} } @inproceedings{MoellmannVollmer2011, author = {M{\"o}llmann, Klaus-Peter and Vollmer, Michael}, title = {IR Imaging of Mircosystems: Special Requirements, Experiments and Applications}, series = {In: Sensor + Test Conferences 2011 : N{\"u}rnberg Exhibition Centre, Germany, 7. - 9.6.2011 ; [including] SENSOR 2011, 15th International Conference on Sensors and Measurement Technology, OPTO 2011, photonic metrology, 10th International Conference on Optical Technologies for Sensing and Measurement, IRS2 2011, 12th International Conference on Infrared Sensors \& Systems ; short proceedings / AMA Fachverband f{\"u}r Sensorik e.V. - Wunstorf/Germany : AMA Service GmbH, 2011. - ISBN 978-3-9810993-8-6}, booktitle = {In: Sensor + Test Conferences 2011 : N{\"u}rnberg Exhibition Centre, Germany, 7. - 9.6.2011 ; [including] SENSOR 2011, 15th International Conference on Sensors and Measurement Technology, OPTO 2011, photonic metrology, 10th International Conference on Optical Technologies for Sensing and Measurement, IRS2 2011, 12th International Conference on Infrared Sensors \& Systems ; short proceedings / AMA Fachverband f{\"u}r Sensorik e.V. - Wunstorf/Germany : AMA Service GmbH, 2011. - ISBN 978-3-9810993-8-6}, pages = {236}, year = {2011}, language = {en} } @techreport{MoellmannVollmerKarstaedtetal.2001, author = {M{\"o}llmann, Klaus-Peter and Vollmer, Michael and Karst{\"a}dt, Detlef and Lutz, Norbert and Pinno, Frank}, title = {Entwicklung und Anwendung von Methoden der Infrarotthermographie}, series = {In: Forschungsbericht der Fachhochschule Brandenburg 2001}, journal = {In: Forschungsbericht der Fachhochschule Brandenburg 2001}, year = {2001}, language = {de} } @inproceedings{KesslerBaierDillneretal.2005, author = {Keßler, E. and Baier, V. and Dillner, U. and M{\"u}ller, J. and Berger, A. and G{\"a}rtner, R. and Meitzner, S. and M{\"o}llmann, Klaus-Peter}, title = {High-Temperature Resistant Infrared Sensing Head Sensor}, series = {In: Sensor 2005 : proceedings ; 12th international conference, N{\"u}rnberg, Germany, 10 - 12 May 2005 ; an event of the AMA Association for Sensor Technology / [Sensor Conference. Publ.: AMA Service GmbH. Chairman R. Werthsch{\"u}tzky]. - Wunstorf : AMA Service Ges., 2005. - Vol. 1}, booktitle = {In: Sensor 2005 : proceedings ; 12th international conference, N{\"u}rnberg, Germany, 10 - 12 May 2005 ; an event of the AMA Association for Sensor Technology / [Sensor Conference. Publ.: AMA Service GmbH. Chairman R. Werthsch{\"u}tzky]. - Wunstorf : AMA Service Ges., 2005. - Vol. 1}, pages = {73 -- 78}, year = {2005}, language = {en} } @inproceedings{OgwuHellwigDohertyetal.2005, author = {Ogwu, Abraham and Hellwig, Thomas and Doherty, Saul and Haddow, David and M{\"o}llmann, Klaus-Peter and Placido, Francis}, title = {Electrochemical investigation of the stability and corrosion resistance of boron phosphide films prepared by PECVD}, series = {In: Window and dome technologies and materials IX : 28 - 29 March 2005, Orlando, Florida, USA ; [held as part of the SPIE Defense \& Security Symposium] / sponsored and publ. by SPIE, the International Society for Optical Engineering. Cooperating organizations: Ball Aerospace \& Technologies Corporation (USA) ... Randal W. Tustison, chair/ed. - Bellingham, Wash. : SPIE, 2005. - (Proceedings // SPIE, International Society for Optical Engineering : P, ISSN 0038-7355 ; 5786). - ISBN 0-8194-5771-X}, booktitle = {In: Window and dome technologies and materials IX : 28 - 29 March 2005, Orlando, Florida, USA ; [held as part of the SPIE Defense \& Security Symposium] / sponsored and publ. by SPIE, the International Society for Optical Engineering. Cooperating organizations: Ball Aerospace \& Technologies Corporation (USA) ... Randal W. Tustison, chair/ed. - Bellingham, Wash. : SPIE, 2005. - (Proceedings // SPIE, International Society for Optical Engineering : P, ISSN 0038-7355 ; 5786). - ISBN 0-8194-5771-X}, pages = {365 -- 372}, year = {2005}, language = {en} } @inproceedings{OgwuHellwigDohertyetal.2005, author = {Ogwu, Abraham and Hellwig, Thomas and Doherty, Saul and Haddow, David and M{\"o}llmann, Klaus-Peter and Placido, Frank}, title = {Surface characterisation and surface measurements on Boron Phosphide films prepared by PECVD}, series = {In: Window and dome technologies and materials IX : 28 - 29 March 2005, Orlando, Florida, USA ; [held as part of the SPIE Defense \& Security Symposium] / sponsored and publ. by SPIE, the International Society for Optical Engineering. Cooperating organizations: Ball Aerospace \& Technologies Corporation (USA) ... Randal W. Tustison, chair/ed. - Bellingham, Wash. : SPIE, 2005. - (Proceedings // SPIE, International Society for Optical Engineering : P, ISSN 0038-7355 ; 5786). - ISBN 0-8194-5771-X}, booktitle = {In: Window and dome technologies and materials IX : 28 - 29 March 2005, Orlando, Florida, USA ; [held as part of the SPIE Defense \& Security Symposium] / sponsored and publ. by SPIE, the International Society for Optical Engineering. Cooperating organizations: Ball Aerospace \& Technologies Corporation (USA) ... Randal W. Tustison, chair/ed. - Bellingham, Wash. : SPIE, 2005. - (Proceedings // SPIE, International Society for Optical Engineering : P, ISSN 0038-7355 ; 5786). - ISBN 0-8194-5771-X}, pages = {130 -- 136}, year = {2005}, language = {en} } @article{GaertnerKlattLooseetal.2004, author = {G{\"a}rtner, R. and Klatt, P. and Loose, Harald and Lutz, Norbert and M{\"o}llmann, Klaus-Peter and Pinno, Frank and Muilwijk, F. and Kalz, S. and Stoppiglia, H.}, title = {New Aluminium Radiation Thermometry}, series = {In: Aluminium : international journal for industry, research and application Vol. 80 (2004), S. 642-647}, journal = {In: Aluminium : international journal for industry, research and application Vol. 80 (2004), S. 642-647}, issn = {0002-6689}, pages = {642 -- 647}, year = {2004}, language = {en} } @inproceedings{WildenJahnReichetal.2007, author = {Wilden, J. and Jahn, S. and Reich, S. and Goecke, Sven-Frithjof}, title = {Technologien zum flussmittelfreien F{\"u}gen von Leichtmetall-Material-Mix-Konstruktionen}, series = {In: Schweißtechnik und F{\"u}getechnik - Schl{\"u}sseltechnologien der Zukunft = Welding and joining - key technologies for the future / 10. Internationales Aachener Schweißtechnik-Kolloquium, 24. - 25.10.2007. Hrsg.: Uwe Reisgen. Red. Bearb.: Konrad Willms ; Nikolaus Wagner. [Veranst. ISF Aachen ...]. - Aachen : Shaker, 2007. - ISBN 978-3-8322-6644-8 ; 3-8322-6644-5}, booktitle = {In: Schweißtechnik und F{\"u}getechnik - Schl{\"u}sseltechnologien der Zukunft = Welding and joining - key technologies for the future / 10. Internationales Aachener Schweißtechnik-Kolloquium, 24. - 25.10.2007. Hrsg.: Uwe Reisgen. Red. Bearb.: Konrad Willms ; Nikolaus Wagner. [Veranst. ISF Aachen ...]. - Aachen : Shaker, 2007. - ISBN 978-3-8322-6644-8 ; 3-8322-6644-5}, pages = {491 -- 502}, year = {2007}, language = {de} } @inproceedings{DornGoecke1997, author = {Dorn, D. and Goecke, Sven-Frithjof}, title = {Influence of very low percentage active gas components in argon on pulsed current welding}, series = {In: 30th International Symposium on Automotive Technology and Automation, Florence, Italy, 16th - 19th June 1997 ; the largest European automotive forum with international participation ; [proceedings] / [ed. by: Dieter Roller] Teil: Materials for energy-efficient vehicles. Paint and powder coating applications in the automotive industries. - Croydon : Automotive Automation Ltd., 1997. - ISBN 0-947719-94-6}, booktitle = {In: 30th International Symposium on Automotive Technology and Automation, Florence, Italy, 16th - 19th June 1997 ; the largest European automotive forum with international participation ; [proceedings] / [ed. by: Dieter Roller] Teil: Materials for energy-efficient vehicles. Paint and powder coating applications in the automotive industries. - Croydon : Automotive Automation Ltd., 1997. - ISBN 0-947719-94-6}, pages = {221 -- 228}, year = {1997}, language = {en} } @inproceedings{DornGoecke2001, author = {Dorn, Lutz and Goecke, Sven-Frithjof}, title = {Choparc for superior MAG-welding of thin sheets with a thickness of less than 0,2 mm}, series = {In: Proceedings of the International Conference on the Joining of Materials JOM-10 : May 11 - 14, 2001, Helsing{\o}r - Denmark / ed. by the Institute for the Joining of Materials . - Gilleleje, 2001. - ISBN 87-89582-097-1}, booktitle = {In: Proceedings of the International Conference on the Joining of Materials JOM-10 : May 11 - 14, 2001, Helsing{\o}r - Denmark / ed. by the Institute for the Joining of Materials . - Gilleleje, 2001. - ISBN 87-89582-097-1}, pages = {84 -- 89}, year = {2001}, language = {en} } @inproceedings{DornGoecke2001, author = {Dorn, L. and Goecke, Sven-Frithjof}, title = {Vorteile des w{\"a}rmearmen ChopArc-Schweißens und -L{\"o}tens bei beschichteten und artverschiedenen Blechen f{\"u}r Leichtfahrzeuge}, series = {In: F{\"u}getechnik im Automobilbau : Vortr{\"a}ge ; 9. - 11. Mai 2001 in Berlin / Deutscher Verband f{\"u}r Materialforschung u. -pr{\"u}fung e.V. - Berlin : DVM, 2001. - (Deutscher Verband f{\"u}r Materialforschung und -pr{\"u}fung: Vortr{\"a}ge ; 2001) (Deutscher Verband f{\"u}r Materialforschung und -pr{\"u}fung: DVM-Bericht ; 668)}, booktitle = {In: F{\"u}getechnik im Automobilbau : Vortr{\"a}ge ; 9. - 11. Mai 2001 in Berlin / Deutscher Verband f{\"u}r Materialforschung u. -pr{\"u}fung e.V. - Berlin : DVM, 2001. - (Deutscher Verband f{\"u}r Materialforschung und -pr{\"u}fung: Vortr{\"a}ge ; 2001) (Deutscher Verband f{\"u}r Materialforschung und -pr{\"u}fung: DVM-Bericht ; 668)}, pages = {93 -- 108}, year = {2001}, language = {de} } @inproceedings{WildenBergmannReichetal.2006, author = {Wilden, J. and Bergmann, J. P. and Reich, S. and Veron, F. and M{\"o}ller, L. and Goecke, Sven-Frithjof}, title = {Methoden und Strategien zum flussmittelfreien F{\"u}gen von Mischverbindungen durch Kombination der geregelten Lichtbogentechnik und der Lasertechnik}, series = {In: Schweißen und Schneiden 2006 : Vortr{\"a}ge der gleichnamigen Großen Schweißtechnischen Tagung in Aachen vom 20. bis 22. September 2006 / Veranst.: DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren e.V., D{\"u}sseldorf. - D{\"u}sseldorf : Verl. f{\"u}r Schweißen und Verwandte Verfahren, DVS-Verl., 2006. - (Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren: DVS-Berichte ; Bd. 240). - ISBN 3-87155-699-8 ; 978-3-87155-699-9}, booktitle = {In: Schweißen und Schneiden 2006 : Vortr{\"a}ge der gleichnamigen Großen Schweißtechnischen Tagung in Aachen vom 20. bis 22. September 2006 / Veranst.: DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren e.V., D{\"u}sseldorf. - D{\"u}sseldorf : Verl. f{\"u}r Schweißen und Verwandte Verfahren, DVS-Verl., 2006. - (Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren: DVS-Berichte ; Bd. 240). - ISBN 3-87155-699-8 ; 978-3-87155-699-9}, pages = {120 -- 125}, year = {2006}, language = {de} } @inproceedings{GoeckeKruscha2007, author = {Goecke, Sven-Frithjof and Kruscha, J.}, title = {Theorie und Praxis des Elektrodenaufschmelzverhaltens und des Werkstoff{\"u}bergangs im Kurzlichtbogenbereich}, series = {In: Die Verbindungs-Spezialisten : Kurzfassungen und Vortr{\"a}ge der gleichnamigen Tagungen in Basel vom 16. bis 18. September 2007 / Veranst.: DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren e.V., D{\"u}sseldorf. In Kooperation mit: Institut de Soudure, Villepinte (Frankreich) ... - D{\"u}sseldorf : Verl. f{\"u}r Schweißen und Verwandte Verfahren, DVS-Verl., 2007. - (Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren: DVS-Berichte ; Bd. 244). - ISBN 978-3-87155-250-2}, booktitle = {In: Die Verbindungs-Spezialisten : Kurzfassungen und Vortr{\"a}ge der gleichnamigen Tagungen in Basel vom 16. bis 18. September 2007 / Veranst.: DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren e.V., D{\"u}sseldorf. In Kooperation mit: Institut de Soudure, Villepinte (Frankreich) ... - D{\"u}sseldorf : Verl. f{\"u}r Schweißen und Verwandte Verfahren, DVS-Verl., 2007. - (Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren: DVS-Berichte ; Bd. 244). - ISBN 978-3-87155-250-2}, pages = {245 -- 258}, year = {2007}, language = {de} } @inproceedings{WildenJahnReichetal.2007, author = {Wilden, J. and Jahn, S. and Reich, S. and Goecke, Sven-Frithjof}, title = {Technologien zum flussmittelfreien F{\"u}gen von Leichtmetall-Material-Mix- Konstruktionen}, series = {In: Schweißtechnik und F{\"u}getechnik - Schl{\"u}sseltechnologien der Zukunft = Welding and joining - key technologies for the future / 10. Internationales Aachener Schweißtechnik-Kolloquium, 24. - 25.10.2007. Hrsg.: Uwe Reisgen. Red. Bearb.: Konrad Willms ; Nikolaus Wagner. [Veranst. ISF Aachen ...]. - Aachen : Shaker, 2007. - (Aachener Berichte F{\"u}getechnik ; 2007,1). - 3-8322-6644-5, 978-3-8322-6644-8}, booktitle = {In: Schweißtechnik und F{\"u}getechnik - Schl{\"u}sseltechnologien der Zukunft = Welding and joining - key technologies for the future / 10. Internationales Aachener Schweißtechnik-Kolloquium, 24. - 25.10.2007. Hrsg.: Uwe Reisgen. Red. Bearb.: Konrad Willms ; Nikolaus Wagner. [Veranst. ISF Aachen ...]. - Aachen : Shaker, 2007. - (Aachener Berichte F{\"u}getechnik ; 2007,1). - 3-8322-6644-5, 978-3-8322-6644-8}, pages = {491 -- 500}, year = {2007}, language = {de} } @inproceedings{WildenBergmannReichetal.2007, author = {Wilden, J. and Bergmann, J. P. and Reich, S. and Neuw{\"o}hner, P. and Goecke, Sven-Frithjof}, title = {Grundlegende Untersuchungen zum flussmittelfreien L{\"o}ten von Leichtmetall-Material-Mix Konstruktionen}, series = {In: Hart- und Hochtemperaturl{\"o}ten und Diffusionsschweißen : Vortr{\"a}ge und Posterbeitr{\"a}ge des 8. internationalen Kolloquiums in Aachen vom 19. bis 21. Juni 2007. - D{\"u}sseldorf : DVS-Verl., 2007. - (DVS-Berichte ; 243). - ISBN 978-3-87155-799-6}, booktitle = {In: Hart- und Hochtemperaturl{\"o}ten und Diffusionsschweißen : Vortr{\"a}ge und Posterbeitr{\"a}ge des 8. internationalen Kolloquiums in Aachen vom 19. bis 21. Juni 2007. - D{\"u}sseldorf : DVS-Verl., 2007. - (DVS-Berichte ; 243). - ISBN 978-3-87155-799-6}, pages = {176 -- 182}, year = {2007}, language = {de} } @inproceedings{GoeckeWildenJahnetal.2008, author = {Goecke, Sven-Frithjof and Wilden, J. and Jahn, S. and Reich, S. and Fedtke, A. and Vollertsen, F. and Thomy, C.}, title = {Technologiekette zum Produzieren, Reparieren und Recyceln von Produkten in Material-Mix-Bauweise - PROREMIX}, series = {In: Die Verbindungs-Spezialisten 2008 : Vortr{\"a}ge und Posterbeitr{\"a}ge der Veranstaltung in Dresden vom 17. bis 19. September 2008 / Veranst.: DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren e.V., D{\"u}sseldorf. - D{\"u}sseldorf : Verl. f{\"u}r Schweißen und Verwandte Verfahren, DVS-Verl., 2008. - (DVS-Berichte ; 250). - ISBN 978-3-87155-256-4}, booktitle = {In: Die Verbindungs-Spezialisten 2008 : Vortr{\"a}ge und Posterbeitr{\"a}ge der Veranstaltung in Dresden vom 17. bis 19. September 2008 / Veranst.: DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren e.V., D{\"u}sseldorf. - D{\"u}sseldorf : Verl. f{\"u}r Schweißen und Verwandte Verfahren, DVS-Verl., 2008. - (DVS-Berichte ; 250). - ISBN 978-3-87155-256-4}, pages = {375 -- 378}, year = {2008}, language = {de} } @article{BergmannWildenReichetal.2009, author = {Bergmann, J. P. and Wilden, J. and Reich, S. and Goecke, Sven-Frithjof}, title = {Methods and solutions for joining plates made from different metals using voltaic arc welding}, series = {In: Welding International 23 (2009) 12, pp 895-903}, journal = {In: Welding International 23 (2009) 12, pp 895-903}, issn = {0950-7116}, doi = {10.1080/09507110902843289}, pages = {895 -- 903}, year = {2009}, abstract = {For some years now, the light engineering sector has been in search of welding and/or joining technologies allowing high-speed processing at low temperatures. This way, damage to galvanized coating, for example in the case of steels, could be avoided or significantly reduced. Damage to the galvanized coating represents an outwardly visible phenomenon that can have a negative impact on the component's corrosion resistance. On the other hand, from the metallurgical viewpoint, controlling heat input represents an important way to solve the problems associated with heat joining of metals with incomplete solid-state solubility. The formation of fragile intermetallic phases during cooling, for example, occurs with aluminium/steel or aluminium/titanium. The process and the correct choice of filler materials are key points for the success of the joining method. In the case of the combination of aluminium and steel, zinc represents a suitable filler material, for example for brazing. The melting temperature is around 420°C and the wettability, with regard to galvanized steel, is favoured by the zinc layer, while on the aluminium part, it is possible to avoid the use of flux, thanks to the activating action of the voltaic arc. However, the low melting and vaporization temperatures of zinc make even 'short arc' processing rather difficult. Only new developments in electrical sources for welding, and in particular new processes, offer the possibility of reducing the heat input by modifying the 'short arc' process. The difficulties described are also valid for the combination of titanium and aluminium, and are associated with the formation of phases such as Ti x A1 y . Again in this case, this paper will present a strategy for joining sheets less than 2 mm thick. In the past years, an increasing number of strategies to join zinc-coated steels can be observed. Brazing represents a profitable way to join zinc-coated steels at low temperatures, reducing or avoiding zinc evaporation. In order to completely avoid damaging zinc coating, the set of ZnAl-f{\`i}llers was already investigated for laser brazing of zinc-coated steels as well as for joining steel with aluminium. Furthermore, thanks to new developments in arc wire technology, ZnAl-electrodes can be used for MIG-brazing as well. In this case, the conventional short arc, which normally does not allow brazing with zinc wires as eruption-like evaporation occurs, is modified and controlled. The drop formation on the wire tip, the metal transfer, and the heat input can be controlled and modified very precisely, so that processing of filler material can be performed easily for thin sheets (till 0.8-1.5 mm) and at low-processing speed, below 0.3-0.4 m/min. The control of the heat input occurs due to abruptly reducing the current after short arc. The disadvantages connected with a lower heat input in the base material are a restricted wetting behaviour of the zinc pool on the base material and the low-brazing speed due to a very high cooling rate. The focus of the presented investigation is the development of strategies, in order to enhance process conditions for brazing sheets of zinc-coated steels and aluminium.}, language = {en} } @article{GhoshDornGoecke2001, author = {Ghosh, P. K. and Dorn, L. and Goecke, Sven-Frithjof}, title = {Universality of correlationships among pulse parameters for different MIG Welding Power Sources}, series = {In: The international journal for the joining of materials : JOM 13 (2001), 40-47}, journal = {In: The international journal for the joining of materials : JOM 13 (2001), 40-47}, issn = {0905-6866}, pages = {40 -- 47}, year = {2001}, language = {en} } @article{WildenJahnMilahinetal.2010, author = {Wilden, J. and Jahn, S. and Milahin, N. and Luhn, T. and Rehfeldt, L. and Goecke, Sven-Frithjof and Schmid, E. and Berger, U.}, title = {Perspektiven und Visionen zum Schweissen moderner Stahlwerkstoffe}, series = {In: Stahl und Eisen 130 (2010) 10, S. 71-75}, journal = {In: Stahl und Eisen 130 (2010) 10, S. 71-75}, issn = {0340-4803}, pages = {71 -- 75}, year = {2010}, language = {de} } @article{WildenJahnMelahinetal.2010, author = {Wilden, J. and Jahn, S. and Melahin, N. and Rehfeldt, L. and Luhn, T. and Goecke, Sven-Frithjof and Schmid, E. and Berger, U.}, title = {Brazing as the key to resource-efficient and energy-efficient joining in the product life cycle}, series = {In: Welding and cutting (2010) 5, 301-312}, journal = {In: Welding and cutting (2010) 5, 301-312}, issn = {1612-3433}, pages = {301 -- 312}, year = {2010}, language = {en} } @article{RoseZaehrSchnicketal.2011, author = {Rose, Sascha and Z{\"a}hr, Julia and Schnick, Michael and F{\"u}ssel, Uwe and Goecke, Sven-Frithjof and H{\"u}bner, Mark}, title = {Arc attachments on aluminium during tungsten electrode positive polarity in TIG welding of aluminium}, series = {In: Welding in the World 55 (2011) 9-10, pp 91-99}, volume = {55}, journal = {In: Welding in the World 55 (2011) 9-10, pp 91-99}, number = {9-10}, issn = {1878-6669}, doi = {10.1007/bf03321325}, pages = {91 -- 99}, year = {2011}, abstract = {In modem AC power sources, both balance and current of EP (tungsten electrode positive) and EN (tungsten electrode negative) can be readily adjusted. According to conventional assumptions the surface of aluminium workpieces is cleaned during EP but the tungsten electrode is more heated due to electron work function. During EN the tungsten electrode cools down and the workpiece is melted. Therefore, optimal settings of the power source mostly aim for maximal penetration and minimal electrode wear. This paper presents a study of arc attachments in TIG welding on aluminium. Two different arc attachments to the cathodic workpiece could be attested with only one of them actually cleaning the surface. The first one is a spot mode (highly dynamic) that attaches to the edges of oxide layers and cracks them. The second one is also a spot mode, but it attaches to weld pools. It does not clean the surface but heats the base material intensively. Both arc attachment modes compete against each other. As a result, the cleaning area narrows with wider weld pools due to an increasing attachment to the weld pool during EP. The influences on the arc attachment to the aluminium cathode as well as the contradictions in present literature are discussed. Possible adjustments of the AC balance for optimized processes are proposed.}, language = {en} } @inproceedings{DornGoecke1997, author = {Dorn, L. and Goecke, Sven-Frithjof}, title = {Influence of least active gas additions on pulsed current MIG-welding of aluminium}, series = {In: Proceedings of the International Conference on the Joining of Materials JOM-8 : May 12 - 14, 1997, Helsing{\o}r, Denmark ; [optimization of joining technology for the industrial application, case study and repair welding, advanced welding technologies and developments] / ed. by the European Institute for the Joining of Materials. - Helsing{\o}r : JOM-Inst., 1997. - ISBN 87-89582-04-7}, booktitle = {In: Proceedings of the International Conference on the Joining of Materials JOM-8 : May 12 - 14, 1997, Helsing{\o}r, Denmark ; [optimization of joining technology for the industrial application, case study and repair welding, advanced welding technologies and developments] / ed. by the European Institute for the Joining of Materials. - Helsing{\o}r : JOM-Inst., 1997. - ISBN 87-89582-04-7}, pages = {100 -- 105}, year = {1997}, language = {en} } @inproceedings{GoeckeDorn2000, author = {Goecke, Sven-Frithjof and Dorn, L.}, title = {MAG-ChopArc-Schweißen f{\"u}r Feinblech gr{\"o}ßer gleich 0,2 mm}, series = {In: Schweißen und Schneiden 2000 : Vortr{\"a}ge der gleichnamigen Großen Schweißtechnischen Tagung in N{\"u}rnberg vom 27. bis 29. September 2000 / Veranst.: DVS, Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren e.V.. - Als Ms. gedr. - D{\"u}sseldorf : Verl. f{\"u}r Schweißen und Verwandte Verfahren, DVS-Verl., 2000. - (DVS-Berichte ; 209). - ISBN 3-87155-667-X}, booktitle = {In: Schweißen und Schneiden 2000 : Vortr{\"a}ge der gleichnamigen Großen Schweißtechnischen Tagung in N{\"u}rnberg vom 27. bis 29. September 2000 / Veranst.: DVS, Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren e.V.. - Als Ms. gedr. - D{\"u}sseldorf : Verl. f{\"u}r Schweißen und Verwandte Verfahren, DVS-Verl., 2000. - (DVS-Berichte ; 209). - ISBN 3-87155-667-X}, pages = {163 -- 168}, year = {2000}, language = {de} } @inproceedings{WildenBergmannDollesetal.2006, author = {Wilden, J. and Bergmann, J. P. and Dolles, M. and Reich, S. and Fernandet, S. and Goecke, Sven-Frithjof}, title = {Low temperature brazing of zinc coated steel and steel/aluminium joints by setting ZnAl-alloys as brazing material}, series = {In: Brazing and soldering : proceedings of the 3rd International Brazing and Soldering Conference, April 24 - 26, 2006, Crowne Plaza Riverwalk Hotel, San Antonio, Texas, USA / sponsored by ASM International, the Materials Information Society; AWS, [American Welding Society]. Ed. by John J. Stephens ... - Materials Park, Ohio: ASM Internat., 2006. - ISBN 0-87170-838-8}, booktitle = {In: Brazing and soldering : proceedings of the 3rd International Brazing and Soldering Conference, April 24 - 26, 2006, Crowne Plaza Riverwalk Hotel, San Antonio, Texas, USA / sponsored by ASM International, the Materials Information Society; AWS, [American Welding Society]. Ed. by John J. Stephens ... - Materials Park, Ohio: ASM Internat., 2006. - ISBN 0-87170-838-8}, pages = {32 -- 39}, year = {2006}, language = {en} } @inproceedings{WildenBergmannReichetal.2007, author = {Wilden, J. and Bergmann, J. P. and Reich, S. and Neuw{\"o}hner, P. and Goecke, Sven-Frithjof}, title = {Basic investigations about the flux-free soldering of multi-material-mix lightweight constructions}, series = {In: Hart- und Hochtemperaturl{\"o}ten und Diffusionsschweißen : Vortr{\"a}ge und Posterbeitr{\"a}ge des 8. Internationalen Kolloquiums in Aachen vom 19. bis 21. Juni 2007. - Als Ms. gedr. - D{\"u}sseldorf : DVS-Verl., 2007. - (DVS-Berichte ; 243). - ISBN 978-3-87155-799-6}, booktitle = {In: Hart- und Hochtemperaturl{\"o}ten und Diffusionsschweißen : Vortr{\"a}ge und Posterbeitr{\"a}ge des 8. Internationalen Kolloquiums in Aachen vom 19. bis 21. Juni 2007. - Als Ms. gedr. - D{\"u}sseldorf : DVS-Verl., 2007. - (DVS-Berichte ; 243). - ISBN 978-3-87155-799-6}, pages = {176 -- 182}, year = {2007}, language = {en} } @inproceedings{WildenJahnReichetal.2008, author = {Wilden, Johannes and Jahn, Simon and Reich, Sebastian and Dal-Canton, Sebastian and Goecke, Sven-Frithjof}, title = {Controlled short arc technology - A new method for processing heat sensitive materials}, series = {In: Future trends in steel development, processing technologies and applications : bringing the automotive, supplier and steel industries together / SCT 2008. Ed. by Bernhard Fuchsbauer und Hans-Joachim Wieland. [Organizer: Steel Institute VDEh, D{\"u}sseldorf, Germany]. - D{\"u}sseldorf : Verl. Stahleisen, 2008. - ISBN 978-3-514-00755-0}, booktitle = {In: Future trends in steel development, processing technologies and applications : bringing the automotive, supplier and steel industries together / SCT 2008. Ed. by Bernhard Fuchsbauer und Hans-Joachim Wieland. [Organizer: Steel Institute VDEh, D{\"u}sseldorf, Germany]. - D{\"u}sseldorf : Verl. Stahleisen, 2008. - ISBN 978-3-514-00755-0}, pages = {368 -- 375}, year = {2008}, language = {en} } @inproceedings{GoeckeSchmaranzer2009, author = {Goecke, Sven-Frithjof and Schmaranzer, C.}, title = {ColdArc-Schweissen von hoch festen martensitischen Warmb{\"a}ndern f{\"u}r den europ{\"a}ischen Nutzfahrzeugmarkt}, series = {In: Die Verbindungs Spezialisten 2009 : Große Schweißtechnische Tagung ; Forschungsforum, Industrieforum, Studentenkongress, Handwerkerforum ; Vortr{\"a}ge der Veranstaltung in Essen vom 14. bis 19. September 2009 / Veranst.: DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren e.V. - D{\"u}sseldorf : DVS Media, 2009. - (DVS-Berichte / DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren e.V., ISSN 0418-9639 ; 258). - ISBN 978-3-87155-584-8}, booktitle = {In: Die Verbindungs Spezialisten 2009 : Große Schweißtechnische Tagung ; Forschungsforum, Industrieforum, Studentenkongress, Handwerkerforum ; Vortr{\"a}ge der Veranstaltung in Essen vom 14. bis 19. September 2009 / Veranst.: DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren e.V. - D{\"u}sseldorf : DVS Media, 2009. - (DVS-Berichte / DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren e.V., ISSN 0418-9639 ; 258). - ISBN 978-3-87155-584-8}, pages = {129 -- 132}, year = {2009}, language = {de} } @inproceedings{WildenJahnSabelfeldetal.2010, author = {Wilden, J. and Jahn, S. and Sabelfeld, N. and Rehfeldt, L. and Luhn, T. and Goecke, Sven-Frithjof and Schmid, E. and Berger, U.}, title = {L{\"o}ten als Schl{\"u}ssel zum ressourcen - und energieeffizienten F{\"u}gen im Produktlebenszyklus}, series = {In: Hart- und Hochtemperaturl{\"o}ten und Diffusionsschweißen : L{\"O}T 2010; Vortr{\"a}ge und Posterbeitr{\"a}ge des 9. internationalen Kolloquiums in Aachen vom 15. bis 17. Juni 2010 = Brazing, high temperature brazing and diffusion bonding / Gemeinschaftsveranstaltung von DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren e.V., D{\"u}sseldorf ... - D{\"u}sseldorf : DVS Media, 2010. - (DVS-Berichte ; 263) - ISBN 978-3-87155-589-3 ; 3-87155-589-4}, booktitle = {In: Hart- und Hochtemperaturl{\"o}ten und Diffusionsschweißen : L{\"O}T 2010; Vortr{\"a}ge und Posterbeitr{\"a}ge des 9. internationalen Kolloquiums in Aachen vom 15. bis 17. Juni 2010 = Brazing, high temperature brazing and diffusion bonding / Gemeinschaftsveranstaltung von DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren e.V., D{\"u}sseldorf ... - D{\"u}sseldorf : DVS Media, 2010. - (DVS-Berichte ; 263) - ISBN 978-3-87155-589-3 ; 3-87155-589-4}, pages = {159 -- 163}, year = {2010}, language = {de} } @inproceedings{GoeckeHuebnerPenningetal.2012, author = {Goecke, Sven-Frithjof and H{\"u}bner, M. and Penning, O. and H{\"o}cker, F. and Suchodoll, D.}, title = {Steigerung der Ressourceneffizienz des MSG-Schweissens}, series = {In: DVS Congress 2012 : Große Schweißtechnische Tagung, DVS-Studentenkongress ; Vortr{\"a}ge der Veranstaltungen in Saarbr{\"u}cken am 17. und 18. September 2012 / Veranst.: DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren. - D{\"u}sseldorf : DVS Media, 2012. - (DVS-Berichte / DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren e.V., ISSN 0418-9639 ; 286). - ISBN 3-87155-593-2, 978-3-87155-593-0}, booktitle = {In: DVS Congress 2012 : Große Schweißtechnische Tagung, DVS-Studentenkongress ; Vortr{\"a}ge der Veranstaltungen in Saarbr{\"u}cken am 17. und 18. September 2012 / Veranst.: DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren. - D{\"u}sseldorf : DVS Media, 2012. - (DVS-Berichte / DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren e.V., ISSN 0418-9639 ; 286). - ISBN 3-87155-593-2, 978-3-87155-593-0}, pages = {265 -- 268}, year = {2012}, language = {de} } @inproceedings{GoeckeBergmannWitte2012, author = {Goecke, Sven-Frithjof and Bergmann, J. P. and Witte, K.-H.}, title = {Steigerung der Ressourceneffizienz des MSG-Schweißens}, series = {In: DVS Congress 2012 : Große Schweißtechnische Tagung, DVS-Studentenkongress ; Vortr{\"a}ge der Veranstaltungen in Saarbr{\"u}cken am 17. und 18. September 2012 / Veranst.: DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren. - D{\"u}sseldorf : DVS Media, 2012. - (DVS-Berichte / DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren e.V., ISSN 0418-9639 ; 286). - ISBN 3-87155-593-2, 978-3-87155-593-0}, booktitle = {In: DVS Congress 2012 : Große Schweißtechnische Tagung, DVS-Studentenkongress ; Vortr{\"a}ge der Veranstaltungen in Saarbr{\"u}cken am 17. und 18. September 2012 / Veranst.: DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren. - D{\"u}sseldorf : DVS Media, 2012. - (DVS-Berichte / DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren e.V., ISSN 0418-9639 ; 286). - ISBN 3-87155-593-2, 978-3-87155-593-0}, pages = {263 -- 264}, year = {2012}, language = {de} } @inproceedings{Goecke2005, author = {Goecke, Sven-Frithjof}, title = {Energiereduziertes Lichtbogen-F{\"u}geverfahren f{\"u}r w{\"a}rmeempfindliche Werkstoffe}, series = {In: Schweißen und Schneiden 2005 : Vortr{\"a}ge der gleichnamigen Großen Schweißtechnischen Tagung in Essen vom 12. bis 14. September 2005 / Veranst.: DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren e.V., D{\"u}sseldorf . - D{\"u}sseldorf : Verl. f{\"u}r Schweißen und Verwandte Verfahren, DVS-Verl., 2005. - (Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren: DVS-Berichte ; Bd. 237). - ISBN 3-87155-695-5}, booktitle = {In: Schweißen und Schneiden 2005 : Vortr{\"a}ge der gleichnamigen Großen Schweißtechnischen Tagung in Essen vom 12. bis 14. September 2005 / Veranst.: DVS - Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren e.V., D{\"u}sseldorf . - D{\"u}sseldorf : Verl. f{\"u}r Schweißen und Verwandte Verfahren, DVS-Verl., 2005. - (Deutscher Verband f{\"u}r Schweißen und Verwandte Verfahren: DVS-Berichte ; Bd. 237). - ISBN 3-87155-695-5}, pages = {44 -- 48}, year = {2005}, language = {de} } @article{WildenJahnMelahinetal.2010, author = {Wilden, Johannes and Jahn, Simon and Melahin, Natalie and Rehfeldt, Lars and Luhn, Thomas and Goecke, Sven-Frithjof and Schmid, Eberhard and Berger, Uwe}, title = {L{\"o}ten als Schl{\"u}ssel zum ressourcen- und energieeffizienten F{\"u}gen im Produktlebenszyklus}, series = {In: Schweissen und Schneiden 62 (2010) 5, 264-277}, journal = {In: Schweissen und Schneiden 62 (2010) 5, 264-277}, pages = {264 -- 277}, year = {2010}, abstract = {Der Einsatz von L{\"o}tverfahren zum F{\"u}gen reduziert gegen{\"u}ber der Schweißtechnik die Prozesstemperaturen und erm{\"o}glicht sowohl die Realisierung anspruchsvoller Mischverbindungen als auch das F{\"u}gen verzinkter St{\"a}hle mit minimaler Zinkschichtverletzung. Aktuelle Entwicklungen von Lotwerkstoffen zielen sowohl in Richtung Absenkung der Schmelztemperaturen als auch in Richtung Festigkeitssteigerung, um die Anwendungsm{\"o}glichkeiten noch weiter zu vervielf{\"a}ltigen. Dabei unterliegen sowohl Eisenbasislegierungen als auch Systeme auf Kupfer- oder Zinkbasis einer stetigen Weiterentwicklung. Die bereits heute erreichbaren Festigkeiten reichen bis etwa 900 MPa (CuAl8Mn13Ni2Fe2) bei Kupferbasislegierungen und 410 MPa (AnAl7,5Cu2,5 + 180 ppm Mg) bei Zinklegierungen. Neben der Energieeinsparung durch die reduzierten Prozesstemperaturen beim F{\"u}gen und der M{\"o}glichkeit Hybridstrukturen herzustellen, ergeben sich außerdem Vorteile bei der Reparatur und dem Recycling von Bauteilen. Da der Zusatzwerkstoff unabh{\"a}ngig vom Grundwerkstoff wiederaufgeschmolzen werden kann, sind eine leichtere Reparatur und auch ein Trennen der Bauteile zum Recycling m{\"o}glich. Dies f{\"u}hrt bei Betrachtung des gesamten Produktlebenszyklus zu einer h{\"o}heren Energieeffizienz und einer Schonung der nat{\"u}rlichen Rohstoffe und Ressourcen. Durch die steigenden Energie- und Werkstoffkosten und den damit verbundenen Kostendruck r{\"u}ckt dieser Aspekt neben der Machbarkeit und Produktivit{\"a}t langsam, aber sicher ins Blickfeld der Unternehmen. Kostenvorteile ergeben sich außerdem durch Betrachtung und Modifikation ganzer Fertigungsketten. Niedrigschmelzende Zusatzwerkstoffe erm{\"o}glichen beispielsweise das F{\"u}gen verzinkter Halbzeuge ohne Zinkschichtverletzung. Da Halbzeuge in großen Mengen kosteng{\"u}nstiger verzinkt werden k{\"o}nnen als fertige Konstruktionen, ist das F{\"u}gen verzinkter Halbzeuge insgesamt g{\"u}nstiger als das Verzinken geschweißter Stahlkonstruktionen.}, language = {de} } @phdthesis{Goecke2005, author = {Goecke, Sven-Frithjof}, title = {Auswirkungen von Aktivgaszumischungen im vpm-Bereich zu Argon auf das MIG-Impulsschweißen von Aluminium}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:83-opus-7178}, school = {TU Berlin}, year = {2005}, abstract = {Die Auswirkungen von Stickstoff, Sauerstoff und Wasserstoffzumischungen im vpm-Bereich zu Argon auf das MIG-Impulsschweißen von Aluminium werden mittels mechanisch-technologischer Untersuchungen, der Hochgeschwindigkeitskinematografie und der Emissions-Spektroskopie ermittelt. Stickstoff- und Sauerstoffzumischungen bewirken bereits unter 0,1 \% eine erhebliche Erh{\"o}hung des Einbrands und eine Verringerung der Mikroporosit{\"a}t gegen{\"u}ber Reinargon, w{\"a}hrend durch Wasserstoffzumischung bis etwa 0,1 \% die Mikroporosit{\"a}t kaum beeinflusst wird. Aufgrund einer Erh{\"o}hung der Lichtbogenstabilit{\"a}t verbessert sich die Prozesssicherheit durch geringe molekulare Aktivgaszumischungen im Al-D{\"u}nnblechbereich. Metalldampf im Kernbereich des MSG-Lichtbogens f{\"u}hrt mit einer ausgepr{\"a}gten Str{\"o}mung in Richtung Schmelzbad zu einer K{\"u}hlung des Plasmas. Dabei erh{\"o}ht Stickstoff- und Sauerstoffzumischung den Metalldampfpartialdruck im Lichtbogenplasma und kontrahiert den Metalldampfstrahl. Verst{\"a}rkte Elektronenemission an der Kathodenoberfl{\"a}che durch hocherhitzte Metalloxide bzw. –nitride verbessert die elektrische Leitf{\"a}higkeit begleitet von einer Erh{\"o}hung des Plasma-Ionisierungsgrads.}, subject = {MIG; Schweißen; Gas; Aluminium; Magnesium; Spektroskopie; Plasma; Lichtbogen; Metalldampf}, language = {de} } @book{OPUS4-626, title = {ChopArc : MSG-Lichtbogenschweißen f{\"u}r den Ultraleichtbau / Sven-Frithjof Goecke ... Hrsg.: F{\"u}getechnik und Beschichtungstechnik (FBT) im Institut f{\"u}r Werkzeugmaschinen und Fabrikbetrieb (IWF) der Technischen Universit{\"a}t Berlin}, publisher = {Fraunhofer IRB-Verl.}, address = {Stuttgart}, isbn = {3-8167-6766-4}, pages = {Getr. Z{\"a}hlung}, year = {2005}, subject = {Leichtbau}, language = {de} } @article{OertelEichler1994, author = {Oertel, Christian and Eichler, M.}, title = {Kopplungen zwischen Fahrzeug- und Reifenmodellen}, series = {In: Automobiltechnische Zeitschrift : ATZ 96 (1994), 184-188}, journal = {In: Automobiltechnische Zeitschrift : ATZ 96 (1994), 184-188}, pages = {184 -- 188}, year = {1994}, language = {de} } @inproceedings{OertelGruber1994, author = {Oertel, Christian and Gruber, Th.}, title = {Einsatz vom Simulationssystemen bei der Bauteiloptimierung}, series = {In: Entwicklung und Konstruktion im Strukturwandel : Fulda, 6. und 7. Juni 1994 / Deutscher Konstrukteurtag '94. VDI-Gesellschaft Entwicklung, Konstruktion, Vertrieb. - D{\"u}sseldorf : VDI-Verl., 1994. - (VDI-Berichte ; 1120). - ISBN: 3-18-091120-4}, booktitle = {In: Entwicklung und Konstruktion im Strukturwandel : Fulda, 6. und 7. Juni 1994 / Deutscher Konstrukteurtag '94. VDI-Gesellschaft Entwicklung, Konstruktion, Vertrieb. - D{\"u}sseldorf : VDI-Verl., 1994. - (VDI-Berichte ; 1120). - ISBN: 3-18-091120-4}, pages = {171 -- 190}, year = {1994}, language = {de} } @techreport{OertelFandreWolperding1995, author = {Oertel, Christian and Fandre, A. and Wolperding, K.}, title = {Vehicle-Tyre Interface: requirements, concept and design}, year = {1995}, language = {en} } @article{OertelDeter1995, author = {Oertel, Christian and Deter, T.}, title = {Einsatz eines Entwurfssystems beim Entwicklungsprozeß des Automobils}, series = {In: Automobiltechnische Zeitschrift : ATZ 97 (1995), 652-657}, journal = {In: Automobiltechnische Zeitschrift : ATZ 97 (1995), 652-657}, pages = {652 -- 657}, year = {1995}, language = {de} } @inproceedings{BannwitzOertel1995, author = {Bannwitz, P. and Oertel, Christian}, title = {Adaptive Reifenmodelle: Aufbau, Anwendung und Parameterbestimmung}, series = {In: Reifen, Fahrwerk, Fahrbahn : Tagung Hannover, 19. und 20. Oktober 1995 / VDI-Gesellschaft Fahrzeug- und Verkehrstechnik. - D{\"u}sseldorf : VDI-Verl., 1995. - (VDI-Berichte ; 1224). - ISBN 3-18-091224-3}, booktitle = {In: Reifen, Fahrwerk, Fahrbahn : Tagung Hannover, 19. und 20. Oktober 1995 / VDI-Gesellschaft Fahrzeug- und Verkehrstechnik. - D{\"u}sseldorf : VDI-Verl., 1995. - (VDI-Berichte ; 1224). - ISBN 3-18-091224-3}, pages = {207 -- 220}, year = {1995}, language = {de} } @inproceedings{OertelBannwitzBoehm1996, author = {Oertel, Christian and Bannwitz, P. and B{\"o}hm, F.}, title = {Reifenmodelle und ihre experimentelle {\"U}berpr{\"u}fung}, series = {SFB 181 : Abschlussbericht. - Berlin : TU, 1996}, booktitle = {SFB 181 : Abschlussbericht. - Berlin : TU, 1996}, year = {1996}, language = {de} } @techreport{Oertel1997, author = {Oertel, Christian}, title = {RMOD-K: Softwaresystem zur Simulation des Reifenverhaltens beim {\"U}berrollen kurzwelliger Bodenunebenheiten.}, year = {1997}, language = {de} } @incollection{Oertel1997, author = {Oertel, Christian}, title = {Produktentwicklungsmethodik und Innovation}, series = {In: Innovation mit System : Erneuerungsstrategien f{\"u}r mittelst{\"a}ndische Unternehmen / T. Biermann, G. Dehr [(Hrsg.). - Berlin [u.a] : Springer, 1997. - ISBN 3-540-62012-5}, booktitle = {In: Innovation mit System : Erneuerungsstrategien f{\"u}r mittelst{\"a}ndische Unternehmen / T. Biermann, G. Dehr [(Hrsg.). - Berlin [u.a] : Springer, 1997. - ISBN 3-540-62012-5}, pages = {105 -- 122}, year = {1997}, language = {de} } @techreport{Oertel1998, author = {Oertel, Christian}, title = {Rubber Bushing MBS Model}, year = {1998}, language = {en} } @techreport{OertelFandre1999, author = {Oertel, Christian and Fandre, Andreas}, title = {Ride comfort simulations and steps towards life time calculations: RMOD-K tyre model and ADAMS}, year = {1999}, language = {en} } @techreport{Oertel1999, author = {Oertel, Christian}, title = {Ber{\"u}cksichtigung der ABS-Eigenschaften in der Fahrzeugdynamik}, year = {1999}, language = {de} } @article{OertelFandre2001, author = {Oertel, Christian and Fandre, Andreas}, title = {Reifenmodellsystem RMOD-K: Ein Beitrag zum virtuellen Fahrzeug}, series = {In: ATZ - Automobiltechnische Zeitschrift 103 (2001) 11, pp 1074-1079}, journal = {In: ATZ - Automobiltechnische Zeitschrift 103 (2001) 11, pp 1074-1079}, doi = {10.1007/BF03223462}, pages = {1074 -- 1079}, year = {2001}, abstract = {Dieser Beitrag der Hochschule Anhalt (FH) und der gedas beschreibt ein Modellsystem mit dem Ziel, das Verhalten von Reifen auf unterschiedlichen Straßenbel{\"a}gen zu berechnen. Neben der Modellierung des Reifens selbst liegt ein weiterer Schwerpunkt auf der Darstellung realer Straßenverh{\"a}ltnisse basierend auf Messungen unter Verwendung eines Millimetergitters. Simulationen im Bereich der Fahrdynamik, des Fahrkomforts bis hin zu Lebensdauertests mit virtuellen Fahrzeugmodellen k{\"o}nnen mit dem Modellsystem RMOD-K bereits in einem fr{\"u}hen Stadium der Fahrzeugentwicklung durchgef{\"u}hrt werden.}, language = {de} } @techreport{Oertel2002, author = {Oertel, Christian}, title = {Kontakt- und Strukturmechanik in Reifenmodellen f{\"u}r die Mehrk{\"o}rperdynamik}, year = {2002}, language = {de} } @article{Oertel2002, author = {Oertel, Christian}, title = {Eigensystem of tangential contact in tyre models}, series = {In : Vehicle System Dynamics 38 (2002) 4, 245-260}, journal = {In : Vehicle System Dynamics 38 (2002) 4, 245-260}, doi = {10.1076/vesd.38.4.245.8284}, pages = {245 -- 260}, year = {2002}, abstract = {Summary In this paper, a simplified model of tangential contact between tyre and rigid surface is investigated. By linearization the eigensystem of the contact equations is obtained and parameter variations are carried out. It is shown, that some vehicle model parameters have great influence on the eigensystem of tangential contact and can determine the highest eigenfrequency of the system vehicle and tyre. Root loci are used to investigate the influence of parameters like vehicle velocity and gridwidth of the discretization. Based on the eigensystem, stability areas of numerical methods in solving the partial differential equations of tangential contact are calculated. Numerical solutions using stiff and nonstiff integrators are compared with respect to the stability areas, computational effort and accuracy. The results are discussed with a view to further development.}, language = {en} } @techreport{Oertel2004, author = {Oertel, Christian}, title = {High frequency related tyre modelling}, year = {2004}, language = {de} } @techreport{OertelFriedemannDeteretal.2005, author = {Oertel, Christian and Friedemann, D. and Deter, T. and Quaissa, A.}, title = {Methodenentwicklung Hindernis{\"u}berfahrt}, year = {2005}, language = {de} } @techreport{Oertel2007, author = {Oertel, Christian}, title = {RMOD-K V 7.09}, year = {2007}, language = {de} } @techreport{Oertel2007, author = {Oertel, Christian}, title = {Reifenmodelle als Komponenten in der Gesamtfahrzeugmodellierung}, year = {2007}, language = {de} } @techreport{Oertel2008, author = {Oertel, Christian}, title = {Tyre models in vehicle dynamics: theory and application, part 2: tyre structure dynamics tyre model}, year = {2008}, language = {en} } @techreport{Oertel2008, author = {Oertel, Christian}, title = {Tyre models in vehicle dynamics: theory and application, part 1: vehicle dynamics tyre model}, year = {2008}, language = {en} } @article{WeiOertelShena2012, author = {Wei, Yintao and Oertel, Christian and Shena, Xiaoliang}, title = {Tyre rolling kinematics and prediction of tyre forces and moments: part II - simulation and experiment}, series = {In: Vehicle system dynamics 50 (2012) 11, 1689-1706}, journal = {In: Vehicle system dynamics 50 (2012) 11, 1689-1706}, doi = {10.1080/00423114.2012.694453}, pages = {1689 -- 1706}, year = {2012}, abstract = {There are two aims for the second part of this paper: verifying the theory presented in the first part through parameter variation and comparison between simulation and experiment, and to study the effect of the belt structure on the cornering properties of radial tyres. Research has been carried out with a passenger car radial tyre and two different kinds of truck or bus radial tyres using both simulation and experiment. This second part of the paper shows that belt structure plays an important role in the generation of tyre forces and moments in addition to the effects of the tread stiffness and friction coefficients. The theory and method presented in this paper opens a new robust way to predict the tyre forces and moments from the tyre design and provides a reliable model for a generation mechanism.}, language = {en} } @article{OertelWei2012, author = {Oertel, Christian and Wei, Yintao}, title = {Tyre rolling kinematics and prediction of tyre forces and moments: part I - theory and method}, series = {In: Vehicle system dynamics 50 (2012) 11, 1673-1687}, journal = {In: Vehicle system dynamics 50 (2012) 11, 1673-1687}, doi = {10.1080/00423114.2012.694452}, pages = {1673 -- 1687}, year = {2012}, abstract = {A new method to describe tyre rolling kinematics and how to calculate tyre forces and moments is presented. The Lagrange-Euler method is used to calculate the velocity and contact deformation of a tyre structure under large deformation. The calculation of structure deformation is based on the Lagrange method, while the Euler method is used to analyse the deformation and forces in the contact area. The method to predict tyre forces and moments is built using kinematic theory and nonlinear finite element analysis. A detailed analysis of the tyre tangential contact velocity and the relationships between contact forces, contact areas, lateral forces, and yaw and camber angles has been performed for specific tyres. Research on the parametric sensitivity of tyre lateral forces and self-aligning torque on tread stiffness and friction coefficients is carried out in the second part of this paper.}, language = {en} } @article{OertelFandre2009, author = {Oertel, Christian and Fandre, A.}, title = {Tire Model RMOD-K 7 and Misuse Load Cases}, series = {In: SAE technical papers 2009-01-0582}, journal = {In: SAE technical papers 2009-01-0582}, year = {2009}, abstract = {Among load cases concerning vehicle suspension strength and durability, the misuse case is very special because of large obstacles. In this paper, an extension of the flexible belt model RMOD-K 7 concerning misuse situations is discussed. In normal rolling conditions, contact occurs between tire and road surface. To handle misuse deformations, the contact between the inner surface of the tire and the rim has to be dealt with. Results of the validation process are shown, leading to normal forces up to 70 [kN]. The model can be used together with mbs full vehicle models. One example is the determination of the critical test velocity, which generates the maximum of suspension stresses and can be found using RMOD-K 7.}, language = {en} } @article{Oertel2009, author = {Oertel, Christian}, title = {Misuse load cases and MBS simulation}, series = {In: Tire technology international 2009, 62-64}, journal = {In: Tire technology international 2009, 62-64}, pages = {62 -- 64}, year = {2009}, language = {en} } @techreport{OertelHempel2010, author = {Oertel, Christian and Hempel, J.}, title = {Finite Elemente f{\"u}r die Reifenmodellierung}, year = {2010}, language = {de} } @inproceedings{VollmerMoellmann2009, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {Perspectives of IR imaging for industrial detection and monitoring of CO2}, series = {In: Temperatur 2009 : Fachtagung PTB Institut Berlin, 24./25. Juni 2009 ; [Verfahren und Ger{\"a}te in der Temperatur- und Feuchtemesstechnik ; Tagungsband] / [Hrsg.: Physikalisch-Technische Bundesanstalt, Braunschweig und Berlin]. Fachl. Mittr{\"a}ger: VDI/VDE-Gesellschaft Mess- und Automatisierungstechnik (GMA), Fachgebiet 2.50: Temperatur und Feuchte. - Braunschweig [u.a.] : Physikalisch-Techn. Bundesanst., 2009. - ISBN 3-9810021-9-9}, booktitle = {In: Temperatur 2009 : Fachtagung PTB Institut Berlin, 24./25. Juni 2009 ; [Verfahren und Ger{\"a}te in der Temperatur- und Feuchtemesstechnik ; Tagungsband] / [Hrsg.: Physikalisch-Technische Bundesanstalt, Braunschweig und Berlin]. Fachl. Mittr{\"a}ger: VDI/VDE-Gesellschaft Mess- und Automatisierungstechnik (GMA), Fachgebiet 2.50: Temperatur und Feuchte. - Braunschweig [u.a.] : Physikalisch-Techn. Bundesanst., 2009. - ISBN 3-9810021-9-9}, pages = {27 -- 36}, year = {2009}, language = {de} } @inproceedings{MoellmannVollmer2013, author = {M{\"o}llmann, Klaus-Peter and Vollmer, Michael}, title = {Einfache Charakterisierung der zeitlichen und r{\"a}umlichen Aufl{\"o}sung von W{\"a}rmebildkameras}, series = {In: Temperatur 2013 : Fachtagung ; PTB Institut Berlin, 5./6. Juni 2013 ; [Verfahren und Ger{\"a}te in der Temperatur- und Feuchtemesstechnik ; Tagungsband] / [Hrsg.: Physikalisch-Technische Bundesanstalt, Braunschweig und Berlin]. Fachl. Mittr{\"a}ger: VDI/VDE-Gesellschaft Mess- und Automatisierungstechnik (GMA), Fachgebiet 2.50: Temperatur und Feuchte. - Braunschweig [u.a.] : Physikalisch-Techn. Bundesanst., 2013. - ISBN 3-9810021-8-0}, booktitle = {In: Temperatur 2013 : Fachtagung ; PTB Institut Berlin, 5./6. Juni 2013 ; [Verfahren und Ger{\"a}te in der Temperatur- und Feuchtemesstechnik ; Tagungsband] / [Hrsg.: Physikalisch-Technische Bundesanstalt, Braunschweig und Berlin]. Fachl. Mittr{\"a}ger: VDI/VDE-Gesellschaft Mess- und Automatisierungstechnik (GMA), Fachgebiet 2.50: Temperatur und Feuchte. - Braunschweig [u.a.] : Physikalisch-Techn. Bundesanst., 2013. - ISBN 3-9810021-8-0}, pages = {137 -- 142}, year = {2013}, language = {de} } @inproceedings{VollmerMoellmannShawetal.2013, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter and Shaw, J. A. and Nugent, P. W.}, title = {Measurements of the surface temperature of the moon from earth with IR cameras}, series = {In: Temperatur 2013 : Fachtagung ; PTB Institut Berlin, 5./6. Juni 2013 ; [Verfahren und Ger{\"a}te in der Temperatur- und Feuchtemesstechnik ; Tagungsband] / [Hrsg.: Physikalisch-Technische Bundesanstalt, Braunschweig und Berlin]. Fachl. Mittr{\"a}ger: VDI/VDE-Gesellschaft Mess- und Automatisierungstechnik (GMA), Fachgebiet 2.50: Temperatur und Feuchte. - Braunschweig [u.a.] : Physikalisch-Techn. Bundesanst., 2013. - ISBN 3-9810021-8-0}, booktitle = {In: Temperatur 2013 : Fachtagung ; PTB Institut Berlin, 5./6. Juni 2013 ; [Verfahren und Ger{\"a}te in der Temperatur- und Feuchtemesstechnik ; Tagungsband] / [Hrsg.: Physikalisch-Technische Bundesanstalt, Braunschweig und Berlin]. Fachl. Mittr{\"a}ger: VDI/VDE-Gesellschaft Mess- und Automatisierungstechnik (GMA), Fachgebiet 2.50: Temperatur und Feuchte. - Braunschweig [u.a.] : Physikalisch-Techn. Bundesanst., 2013. - ISBN 3-9810021-8-0}, pages = {149 -- 154}, year = {2013}, language = {en} } @inproceedings{MoellmannVollmerKarstaedt1999, author = {M{\"o}llmann, Klaus-Peter and Vollmer, Michael and Karst{\"a}dt, Detlef}, title = {Tieftemperaturexperimente in der Experimentalphysikausbildung an Hochschulen: Experimente mit fl{\"u}ssigem Stickstoff in der Hochschullehre}, series = {In: Fr{\"u}hjahrstagung des Fachverbands Didaktik der Physik in der Deutschen Physikalischen Gesellschaft, Ludwigsburg 1999 ; zus{\"a}tzlich mit den Beitr{\"a}gen des Lehrertages und der Kunstausstellung bei der Fr{\"u}hjahrstagung 1999 des Arbeitskreises Festk{\"o}rperphysik in M{\"u}nster. - Berlin : Lehmann, 1999. - 1 CD-ROM. - ISBN 3-931253-41-4}, booktitle = {In: Fr{\"u}hjahrstagung des Fachverbands Didaktik der Physik in der Deutschen Physikalischen Gesellschaft, Ludwigsburg 1999 ; zus{\"a}tzlich mit den Beitr{\"a}gen des Lehrertages und der Kunstausstellung bei der Fr{\"u}hjahrstagung 1999 des Arbeitskreises Festk{\"o}rperphysik in M{\"u}nster. - Berlin : Lehmann, 1999. - 1 CD-ROM. - ISBN 3-931253-41-4}, year = {1999}, language = {de} } @article{Vollmer2000, author = {Vollmer, Michael}, title = {Finsternisse, Transits, Kometen und Meteore: ein Blick in die Zukunft}, series = {In: CD zur Fr{\"u}hjahrstagung des Fachverbandes Didaktik der Physik in der Deutschen Physikalischen Gesellschaft, Dresden 2000 ; weiterhin enthalten: Beitr{\"a}ge zu den Lehrertagen und Exponate der Kunstausstellung Grenzfl{\"a}chen bei der Fr{\"u}hjahrstagung Regensburg 2000 / Red.: V. Nordmeier . - Berlin : Lehmann, 2000. - 1 CD-ROM. - ISBN 3-931253-71-6}, journal = {In: CD zur Fr{\"u}hjahrstagung des Fachverbandes Didaktik der Physik in der Deutschen Physikalischen Gesellschaft, Dresden 2000 ; weiterhin enthalten: Beitr{\"a}ge zu den Lehrertagen und Exponate der Kunstausstellung Grenzfl{\"a}chen bei der Fr{\"u}hjahrstagung Regensburg 2000 / Red.: V. Nordmeier . - Berlin : Lehmann, 2000. - 1 CD-ROM. - ISBN 3-931253-71-6}, year = {2000}, language = {de} } @inproceedings{Vollmer2002, author = {Vollmer, Michael}, title = {Freihandspektroskopieexperimente im Unterricht und als Hausaufgabe}, series = {In: CD zur Fr{\"u}hjahrstagung des Fachverbandes Didaktik der Physik in der Deutschen Physikalischen Gesellschaft : Leipzig, 2002 / Red.: V. Nordmeier. - Berlin : Lehmann, [2002]. - 1 CD-ROM. - ISBN 3-936427-11-9}, booktitle = {In: CD zur Fr{\"u}hjahrstagung des Fachverbandes Didaktik der Physik in der Deutschen Physikalischen Gesellschaft : Leipzig, 2002 / Red.: V. Nordmeier. - Berlin : Lehmann, [2002]. - 1 CD-ROM. - ISBN 3-936427-11-9}, year = {2002}, language = {de} } @inproceedings{Vollmer2002, author = {Vollmer, Michael}, title = {{\"U}ber die Farben der Sonne und des Himmels: Rayleigh- und Miestreuung in Demonstrationsexperimenten}, series = {In: CD zur Fr{\"u}hjahrstagung des Fachverbandes Didaktik der Physik in der Deutschen Physikalischen Gesellschaft : Leipzig, 2002 / Red.: V. Nordmeier. - Berlin : Lehmann, [2002]. - 1 CD-ROM. - ISBN 3-936427-11-9}, booktitle = {In: CD zur Fr{\"u}hjahrstagung des Fachverbandes Didaktik der Physik in der Deutschen Physikalischen Gesellschaft : Leipzig, 2002 / Red.: V. Nordmeier. - Berlin : Lehmann, [2002]. - 1 CD-ROM. - ISBN 3-936427-11-9}, year = {2002}, language = {de} } @inproceedings{ChristmannVollmer2004, author = {Christmann, S. and Vollmer, Michael}, title = {Jahrgangs{\"u}bergreifendes Projekt zum Wetter f{\"u}r die Grundschule}, series = {In: Didaktik der Physik : Beitr{\"a}ge zur Fr{\"u}hjahrstagung D{\"u}sseldorf 2004 ; CD zur Fr{\"u}hjahrstagung des Fachverbandes Didaktik der Physik in der Deutschen Physikalischen Gesellschaft / V. Nordmeier ... (Hrsg.). - Berlin : Lehmanns Media, 2004. - 1 CD-ROM. - ISBN 3-86541-066-9}, booktitle = {In: Didaktik der Physik : Beitr{\"a}ge zur Fr{\"u}hjahrstagung D{\"u}sseldorf 2004 ; CD zur Fr{\"u}hjahrstagung des Fachverbandes Didaktik der Physik in der Deutschen Physikalischen Gesellschaft / V. Nordmeier ... (Hrsg.). - Berlin : Lehmanns Media, 2004. - 1 CD-ROM. - ISBN 3-86541-066-9}, year = {2004}, language = {de} } @incollection{VollmerKreibig1992, author = {Vollmer, Michael and Kreibig, U.}, title = {Collective excitations of large metal clusters}, series = {In: Nuclear physics concepts in the study of atomic cluster physics : proceedings of the 88th W.-E.-Heraeus-Seminar, held at Bad Honnef, FRG, 26 - 29 November 1991 / R. Schmidt ... (ed.). - Berlin [u.a.] : Springer, 1992. - (Lecture notes in physics ; Vol. 404). - ISBN 3-540-55625-7 ; 0-387-55625-7. - S. 266-276}, booktitle = {In: Nuclear physics concepts in the study of atomic cluster physics : proceedings of the 88th W.-E.-Heraeus-Seminar, held at Bad Honnef, FRG, 26 - 29 November 1991 / R. Schmidt ... (ed.). - Berlin [u.a.] : Springer, 1992. - (Lecture notes in physics ; Vol. 404). - ISBN 3-540-55625-7 ; 0-387-55625-7. - S. 266-276}, doi = {10.1007/3-540-55625-7_30}, pages = {266 -- 276}, year = {1992}, abstract = {Studies of the evolution of the optical properties of metal clusters as a function of size have gained considerable attention in the last few years. One theoretical approach starts from large metal clusters, which can be described by classical electrodynamics, provided the dielectric functions of the clusters are known. the resulting resonant features in the absorption spectra are commonly called surface plasmons and are collective excitations of the electron system.The present paper discusses the electrodynamic (Mie) theory for large clusters of different metals, also considering the range of validity of this approach towards smaller cluster sizes. More details can be found in an extended review on this topic which is to be published soon [1].}, language = {en} } @article{GoetzHoheiselTraegeretal.1993, author = {G{\"o}tz, T. and Hoheisel, W. and Tr{\"a}ger, F. and Vollmer, Michael}, title = {Interplay between collective and single electron excitations in large metal clusters}, series = {In: Zeitschrift f{\"u}r Physik / D 26 (1993), 267-269}, journal = {In: Zeitschrift f{\"u}r Physik / D 26 (1993), 267-269}, year = {1993}, language = {en} } @article{HoheiselVollmerTraeger1993, author = {Hoheisel, W. and Vollmer, Michael and Tr{\"a}ger, F.}, title = {Desorption of metal atoms with laser light: Mechanistic studies}, series = {In: Physical Review / B 48 1993) 23, 17463-17476}, journal = {In: Physical Review / B 48 1993) 23, 17463-17476}, doi = {10.1103/PhysRevB.48.17463}, year = {1993}, abstract = {Results on laser-induced desorption of metal atoms from small metal particles are presented. Experiments have been performed on sodium, potassium, and silver particles supported on a LiF(100) single-crystal surface under ultrahigh vacuum conditions. Measurements include the determination of the desorption rate as a function of laser wavelength, laser intensity, average particle size, and substrate temperature, the determination of the kinetic energy of the desorbed atoms, the investigation of the optical spectra of the supported metal particles, and the study of the influence of adsorbate molecules on the desorption rate. Furthermore, theoretical extinction and absorption spectra of the metal particles have been calculated with the classical electrodynamical Mie theory as a function of average particle size and excitation wavelength. Also, the radial electric field at the particle surface was computed. The results of the experiments and theoretical calculations are combined to give a consistent picture of the mechanism of metal-atom desorption by electronic excitation with laser light. A realistic surface potential from which the atoms escape and nonlocal optical effects are taken into account. The latter introduce additional absorption channels by the formation of electron-hole pairs in the surface layer of the particle which relax into antibonding states before desorption occurs. Finally, the mechanism is discussed in the light of similar phenomena observed for thin metal films. Possibilities for future work are outlined. © 1993 The American Physical Society}, language = {en} } @article{GoetzTraegerVollmer1993, author = {G{\"o}tz, T. and Tr{\"a}ger, F. and Vollmer, Michael}, title = {Desorption of metal atoms with laser light of different polarization}, series = {In: Applied physics / A 57 (1993) 1, pp 101-104}, journal = {In: Applied physics / A 57 (1993) 1, pp 101-104}, doi = {10.1007/BF00331225}, pages = {101 -- 104}, year = {1993}, abstract = {Laser-induced desorption of metal atoms from the surface of small metal particles has been investigated as a function of the shape of the particles and the polarization of the incident laser light. The particles were supported on LiF, quartz or sapphire substrates. In a first set of experiments, the shape of the particles was determined by recording optical transmission spectra with s- and p-polarized light incident under an angle of typically 40° with respect to the surface normal. The metal particles turn out to be oblate, the ratio of the axes perpendicular and parallel to the substrate surface being on the order of 0.5. This ratio decreases with increasing particle size. Also, the particles change shape if the temperature is raised. In further experiments, s- and p-polarized light has been used to stimulate desorption of atoms via surface plasmon excitation. It is found that the desorption rate markedly depends on the polarization of the light. This is explained by excitation of the collective electron oscillation along different axes of the non-spherical particles.}, language = {en} } @article{HoevelFritzHilgeretal.1993, author = {H{\"o}vel, H. and Fritz, S. and Hilger, A. and Kreibig, U. and Vollmer, Michael}, title = {Width of cluster plasmon resonances: Bulk dielectric functions and chemical interface damping}, series = {In: Phys. Rev. B 48 (1993) 24, 18178-18188}, journal = {In: Phys. Rev. B 48 (1993) 24, 18178-18188}, doi = {10.1103/PhysRevB.48.18178}, year = {1993}, abstract = {The damping of collective electron resonances in clusters which develop into plasmon polaritons at larger sizes is investigated for free, supported, and embedded neutral metal clusters. Embedding of free 2 nm Ag clusters of 2-nm diameter into a SiO2 matrix leads to an increase of the width of the resonances by more than a factor of 3. The optical spectra are compared with the Mie theory using size-effect-modified dielectric functions of the solid state. The results corroborate the assumption that the widths of the resonances strongly depend on chemical interface effects. The results are briefly discussed with regard to limited-mean-free-path and quantum-size-effect theories and a recent approach by Persson. It is demonstrated that the widths of the spectra of supported and embedded clusters have to be interpreted with care since true intrinsic size effects of the clusters appear to be less effective than previously believed and can be obscured by the chemical interface damping. © 1993 The American Physical Society}, language = {en} } @inproceedings{Vollmer1994, author = {Vollmer, Michael}, title = {Ablation of Metal Particles with Laser Light: Shape and Polarization Effects}, series = {In: Laser ablation: mechanisms and applications - II : second international conference, Knoxville, TN April 1993 / eds.: John C. Miller ...- New York : American Inst. of Physics, 1994. - (AIP conference proceedings / American Institute of Physics. - Melville, NY, 1970- ; 288) (Laser ablation: mechanisms and applications. - New York : American Institute of Physics ; 2). - S. 32 ff}, booktitle = {In: Laser ablation: mechanisms and applications - II : second international conference, Knoxville, TN April 1993 / eds.: John C. Miller ...- New York : American Inst. of Physics, 1994. - (AIP conference proceedings / American Institute of Physics. - Melville, NY, 1970- ; 288) (Laser ablation: mechanisms and applications. - New York : American Institute of Physics ; 2). - S. 32 ff}, pages = {32 -- 37}, year = {1994}, language = {en} } @article{GoetzHoheiselTraegeretal.1995, author = {G{\"o}tz, T. and Hoheisel, W. and Tr{\"a}ger, F. and Vollmer, Michael}, title = {Characterization of Large Supported Metal Clusters by Optical Spectroscopy}, series = {In: Zeitschrift f{\"u}r Physik / D Vol. 33 (1995) 2, pp 133-141}, journal = {In: Zeitschrift f{\"u}r Physik / D Vol. 33 (1995) 2, pp 133-141}, doi = {10.1007/BF01437432}, year = {1995}, abstract = {Small sodium and silver particles were generated on dielectric substrates like LiF, quartz and sapphire under ultrahigh vacuum conditions. The optical transmission spectra of the clusters were measured as a function of cluster size and shape, for low and high substrate temperatures as well as for s- and p- polarization of the incident light. Excitation of dipolar surface plasmon oscillations in the directions normal and parallel to the substrate surface could be identified. Furthermore, optical spectra for Na and Ag clusters were calculated with the classical Mie theory. The measured spectra vary strongly if the experimental conditions are changed and can be exploited, for example, to characterize the particles with regard to their size and shape. In particular, the axial ratio of the spheroidal clusters could be determined. Its value is considerably different for the two investigated metals and depends on the substrate material. Furthermore, the temperature of the substrate has a pronounced influence on the shape of the particles. At low temperature of T=100 K two-dimensional island growth is predominant. The particles extend only little in the direction perpendicular to the surface and coalesce readily at small coverage of metal atoms. In contrast, the clusters are truly three-dimensional at T=300 K. At this stage, sodium particles still exhibit a rather small axial ratio whereas silver clusters appear almost spherical. Thus, measurements of the optical spectra permit direct in situ monitoring of cluster growth during the nucleation of adsorbed atoms and of temperature induced shape variations. In addition to investigations of the shape of the particles, the quadrupolar surface plasmon mode was observed for Ag clusters.}, language = {en} } @article{VollmerTammer1998, author = {Vollmer, Michael and Tammer, Robert}, title = {Laboratory Experiments in Atmospheric Optics}, series = {In: Applied optics 37 (1998) 9, pp. 1557-1568}, journal = {In: Applied optics 37 (1998) 9, pp. 1557-1568}, doi = {10.1364/AO.37.001557}, pages = {1557 -- 1568}, year = {1998}, abstract = {Old and new laboratory experiments on atmospheric optics with a focus on mirages, rainbows, and halos are presented. Some qualitative demonstrations serve primarily didactical purposes, e.g., by proving the existence of curved light rays in media with a gradient of the index of refraction, by directly visualizing the minimum-deviation curve for rainbow paths in water droplets, or by helping to elucidate the ray classes in hexagons that contribute to a specific halo. In addition, quantitative experiments allow a direct comparison of angular positions and intensities with analytical computations or Monte Carlo simulations of light scattering from small water droplets or ice hexagons. In particular, the latter can help us to understand complex halo phenomena. © 1998 Optical Society of America}, language = {en} } @article{VollmerGreenler2003, author = {Vollmer, Michael and Greenler, Robert}, title = {More Halo and Mirage Experiments in Atmospheric Optics}, series = {In: Applied Optics 42 (2003) 3, pp. 394-398}, journal = {In: Applied Optics 42 (2003) 3, pp. 394-398}, doi = {10.1364/AO.42.000394}, year = {2003}, abstract = {Some laboratory demonstrations on atmospheric optics are presented. The focus is on dispersion effects in mirages, lateral mirages, and inferior mirages produced with small hot plates. We also show a demonstration of the upper-tangent-arc halo, produced with a hexagonal prism, rotating about two axes. © 2003 Optical Society of America}, language = {en} } @inproceedings{MoellmannLutzVollmeretal.2004, author = {M{\"o}llmann, Klaus-Peter and Lutz, Norbert and Vollmer, Michael and Wille, Ch.}, title = {Thermography of Microsystems}, series = {In: InfraMation proceedings Vol. 5 (2004), 183-196}, booktitle = {In: InfraMation proceedings Vol. 5 (2004), 183-196}, pages = {183 -- 196}, year = {2004}, language = {en} } @article{SchneiderVollmer2005, author = {Schneider, Werner B. and Vollmer, Michael}, title = {Experimental simulations of pollen coronas}, series = {In: Applied optics 44 (2005) 27, 5746-5753}, journal = {In: Applied optics 44 (2005) 27, 5746-5753}, doi = {10.1364/AO.44.005746}, pages = {5746 -- 5753}, year = {2005}, abstract = {A procedure to experimentally simulate pollen coronas is discussed. Observed coronas are due to pine and birch pollen having different geometries. Using computer simulations, two-dimensional projections of a large number of pollenlike objects with adjustable shapes, with or without preferential orientation and statistical or regular spatial distribution, are generated. The photograph of the printout allows samples with typical sizes between 20 and 200 µm. Their diffraction patterns can closely resemble the ones observed in nature and predicted by theory. © 2005 Optical Society of America}, language = {en} } @article{Vollmer2005, author = {Vollmer, Michael}, title = {Effects of absorbing particles on coronas and glories}, series = {In: Applied optics 44 (2005) 27, 5658-5666}, journal = {In: Applied optics 44 (2005) 27, 5658-5666}, doi = {10.1364/AO.44.005658}, pages = {5658 -- 5666}, year = {2005}, abstract = {Light scattering from small particles changes if the particles are absorbing. Whereas the effect is small for coronas and Bishop's ring, glories show pronounced attenuation with increasing absorption. Results indicate suitable wavelength regions for studies of glory scattering from cloud tops. The behavior of core-shell particles could have applications for studying the atmosphere of Venus; in addition it provides more insight into the simple ray-path model of the glory. © 2005 Optical Society of America}, language = {en} } @article{GedzelmanVollmer2008, author = {Gedzelman, Stanley David and Vollmer, Michael}, title = {Atmospheric Optical Phenomena and Radiative Transfer}, series = {In: Bulletin of the American Meteorological Society. 89 (2008) 4, 471-485}, journal = {In: Bulletin of the American Meteorological Society. 89 (2008) 4, 471-485}, doi = {10.1175/BAMS-89-4-471}, pages = {471 -- 485}, year = {2008}, abstract = {We present simple radiative transfer models for the radiance and color of atmospheric optical phenomena. Skylight, halos, and rainbows are treated as singly scattered sunlight that is depleted by scattering as it passes through a plane-parallel atmosphere and a vertical rain shaft or a geometrically thin cloud layer. Skylight in a molecular atmosphere grades from deep blue at the zenith to pale blue near the horizon whenever the solar zenith angle sun ≤ 80°. Skylight near the horizon is orange resulting from wavelength-dependent scattering by air molecules and aerosol particles through a long oblique path through the atmosphere when the sun is low in the sky (sun ≥ 85°). Halos (and coronas) seen through clouds facing the sun are brightest for cloud optical depth τcld ≈ cos(sun), and fade to obscurity for τcld ≥ 5. Rainbows (and glories), seen by light that is backscattered from clouds, also appear most dramatic when 0.2 ≤ τcld ≤ 1, but remain visible even in the thickest clouds.}, language = {en} } @inproceedings{MoellmannPinnoVollmer2007, author = {M{\"o}llmann, Klaus-Peter and Pinno, Frank and Vollmer, Michael}, title = {Influence of wind effects on thermal imaging results - Is the wind chill effect relevant ?}, series = {In: InfraMation proceedings Vol. 8 (2007), 21-31}, booktitle = {In: InfraMation proceedings Vol. 8 (2007), 21-31}, pages = {21 -- 31}, year = {2007}, language = {en} } @article{HernitschekSchmidtVollmer2008, author = {Hernitschek, Nina and Schmidt, Elmar and Vollmer, Michael}, title = {Lunar eclipse photometry: absolute luminance measurements and modeling}, series = {In: Applied optics 47 (2008) 34, pp. H62-H71}, journal = {In: Applied optics 47 (2008) 34, pp. H62-H71}, doi = {10.1364/AO.47.000H62}, pages = {H62 -- H71}, year = {2008}, abstract = {The Moon's time-dependent luminance was determined during the 9 February 1990 and 3 March 2007 total lunar eclipses by using calibrated, industry standard photometers. After the results were corrected to unit air mass and to standard distances for both Moon and Sun, an absolute calibration was accomplished by using the Sun's known luminance and a pre-eclipse lunar albedo of approximately 13.5\%. The measured minimum level of brightness in the total phase of both eclipses was relatively high, namely -3.32 mvis and -1.7 mvis , which hints at the absence of pronounced stratospheric aerosol. The light curves were modeled in such a way as to let the Moon move through an artificial Earth shadow composed of a multitude of disk and ring zones, containing a relative luminance data set from an atmospheric radiative transfer calculation. © 2008 Optical Society of America}, language = {en} } @article{GedzelmanVollmer2008, author = {Gedzelman, Stanley David and Vollmer, Michael}, title = {Simulating irradiance and color during lunar eclipses using satellite data}, series = {In: Applied Optics 47 (2008) 34, pp. H149-H156}, journal = {In: Applied Optics 47 (2008) 34, pp. H149-H156}, doi = {http://dx.doi.org/10.1364/AO.47.00H149}, pages = {H149 -- H156}, year = {2008}, abstract = {Irradiance and color during the total lunar eclipses of 2007 and 2008 are simulated using a ray tracing model that includes refraction, scattering by molecules, and observed or climatological distributions of aerosols, ozone, clouds, and topography around the terminator. Central portions of the umbra appear deep red for almost all eclipses due to preferential removal of short wavelengths in the spectrum of sunlight by scattering in the lower troposphere. The fringe of the umbra appears turquoise or blue due to selective removal of wavelengths around 600 nm by the Chappuis absorption bands of ozone in the stratosphere. Asymmetric distributions of clouds and aerosols, particularly for the 2008 eclipse, produce minimum calculated irradiance up to 17  arc min from the umbra center, while high ozone content over the arctic makes the northern edge of the umbra deepest blue. © 2008 Optical Society of America}, language = {en} } @article{VollmerGedzelman2008, author = {Vollmer, Michael and Gedzelman, Stanley David}, title = {Simulating irradiance during lunar eclipses: the spherically Symmetric case}, series = {In: Applied Optics 47 (2008) 34, H52-61}, journal = {In: Applied Optics 47 (2008) 34, H52-61}, doi = {http://dx.doi.org/10.1364/AO.47.000H52}, pages = {H52 -- H61}, year = {2008}, abstract = {Irradiance during total lunar eclipses is simulated using a pinhole model. The Moon is illuminated by direct sunlight that is refracted into the Earth's shadow as it passes through the atmosphere at the terminator but is depleted by scattering by molecules, extinction by aerosol particles, absorption by ozone, and obstruction by clouds and elevated land. On a spherical, sea-level Earth, and a cloudless, molecular atmosphere with no ozone, the eclipsed Moon appears red and calculated irradiance at the center of the umbra is reduced by a factor of about 2400 from direct moonlight. Selective absorption mainly of light around 600 nm by stratospheric ozone turns the periphery of the umbra pale blue. Typical distributions of aerosol particles, ozone, mountains, and clouds around the terminator reduce irradiance by an additional factor of the order of 100. © 2008 Optical Society of America}, language = {en} } @inproceedings{PinnoMoellmannVollmer2008, author = {Pinno, Frank and M{\"o}llmann, Klaus-Peter and Vollmer, Michael}, title = {Thermography of window panes - problems, possibilities and troubleshooting}, series = {In: InfraMation proceedings Vol. 9 (2008), 355-362}, booktitle = {In: InfraMation proceedings Vol. 9 (2008), 355-362}, pages = {355 -- 362}, year = {2008}, language = {en} } @inproceedings{MoellmannPinnoVollmer2008, author = {M{\"o}llmann, Klaus-Peter and Pinno, Frank and Vollmer, Michael}, title = {Night sky radiant cooling - influence on outdoor thermal imaging analysis}, series = {In: InfraMation proceedings Vol. 9 (2008), 279-295}, booktitle = {In: InfraMation proceedings Vol. 9 (2008), 279-295}, pages = {279 -- 295}, year = {2008}, language = {en} } @inproceedings{VollmerMoellmannPinno2008, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter and Pinno, Frank}, title = {Cheese cubes, light bulbs, soft drinks: An unusual approach to study convection, radiation and size dependent heating and cooling}, series = {In: InfraMation proceedings Vol. 9 (2008), p. 477-492}, booktitle = {In: InfraMation proceedings Vol. 9 (2008), p. 477-492}, pages = {477 -- 492}, year = {2008}, language = {en} } @inproceedings{MoellmannPinnoVollmer2009, author = {M{\"o}llmann, Klaus-Peter and Pinno, Frank and Vollmer, Michael}, title = {Microscopic and high-speed thermal imaging: a powerful tool in physics R\&D}, series = {In: InfraMation proceedings Vol.10 (2009), 303-317}, booktitle = {In: InfraMation proceedings Vol.10 (2009), 303-317}, pages = {303 -- 317}, year = {2009}, language = {en} } @inproceedings{PinnoMoellmannVollmer2009, author = {Pinno, Frank and M{\"o}llmann, Klaus-Peter and Vollmer, Michael}, title = {Solar load and reflection effects and respective time constants in outdoor building inspections}, series = {In: Inframation proceedings Vol. 10 (2009), 319-330}, booktitle = {In: Inframation proceedings Vol. 10 (2009), 319-330}, pages = {319 -- 330}, year = {2009}, language = {en} } @inproceedings{VollmerVujkovićTrelluetal.2009, author = {Vollmer, Michael and Vujković, M. and Trellu, Y. and M{\"o}llmann, Klaus-Peter}, title = {IR feedback loops to spotlights: thermography and contemporary dancing}, series = {In: InfraMation proceedings.- Vol. 10 (2009), p. 89-97}, booktitle = {In: InfraMation proceedings.- Vol. 10 (2009), p. 89-97}, pages = {89 -- 97}, year = {2009}, language = {en} } @inproceedings{VollmerMoellmann2009, author = {Vollmer, Michael and M{\"o}llmann, Klaus-Peter}, title = {IR imaging of gases: quantitative analysis}, series = {In: InfraMation proceedings. - Vol. 10 (2009), p. 99-112}, booktitle = {In: InfraMation proceedings. - Vol. 10 (2009), p. 99-112}, pages = {99 -- 112}, year = {2009}, language = {en} }