TY - CONF A1 - Maierhofer, Christiane A1 - Krause, Martin A1 - Mielentz, Frank A1 - Streicher, Doreen A1 - Milmann, Boris A1 - Gardei, André A1 - Kohl, Christoph A1 - Wiggenhauser, Herbert T1 - Complementary application of radar, impact-echo and ultrasonics for testing concrete structures and metallic tendon ducts T2 - 83rd Annual Meeting Transportation Research Board of the National Academies CY - Washington, D. C., USA DA - 2004-01-11 KW - Non-destructive testing KW - Tendon duct KW - Concrete bridge KW - Radar KW - Ultrasonic KW - Impact-echo PY - 2004 SP - 18 pages CY - Washington AN - OPUS4-4909 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Mielentz, Frank A1 - Milmann, Boris A1 - Wöstmann, Jens A1 - Krause, Martin A1 - Maierhofer, Christiane A1 - Römer, A. A1 - Völkel, W. T1 - Untersuchungen zur zerstörungsfreien Bestimmung des Hohlraumgehaltes von Asphaltschichten T2 - DGZfP-Fachtagung Bauwerksdiagnose "Praktische Anwendungen Zerstörungsfreier Prüfungen" CY - Berlin, Deutschland DA - 2006-02-22 KW - Asphalt KW - Hohlraumgehalt KW - Zerstörungsfreie Prüfung KW - Ultraschallverfahren KW - Ultraschall-Rückstreuung KW - Radarverfahren PY - 2006 SN - 3-931381-71-4 SP - 1(?) EP - 9(?) PB - DGZfP CY - Berlin AN - OPUS4-12116 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Wendrich, Astrid A1 - Trela, Christiane A1 - Krause, Martin A1 - Maierhofer, Christiane A1 - Wöstmann, Jens A1 - Milmann, Boris ED - Mazal, P. T1 - Application of ultrasonic and radar tomography for the investigation of the internal structure of masonry T2 - 3rd International Workshop of NDT Experts CY - Prague, Czech Republic DA - 2005-10-10 KW - Masonry KW - Tomography KW - Ultrasonic KW - Radar KW - Non-destructive testing PY - 2005 SN - 80-2142996-8 SP - 299 EP - 313 PB - Univ. of Technology CY - Brno AN - OPUS4-12273 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Kohl, Christoph A1 - Krause, Martin A1 - Maierhofer, Christiane A1 - Wöstmann, Jens T1 - 2D- and 3D-visualisation of NDT-data using data fusion technique N2 - Non-destructive testing (NDT) of concrete structures is performed using pulse-echo methods. According to the type of the applied waves it can be classified as acoustic (Impact-Echo, Ultrasonics) and electromagnetic methods (Radar). The results are visualised through different imaging processes. This work is performed in the frame of a research project promoted by Deutsche Forschungsgemeinschaft (FOR384). The objective of data fusion is to use the complementary information of the different methods. Radar can detect metallic reflectors in concrete (metallic ducts and concrete reinforcement) very well. This method is not able to locate defects behind these reflectors (injecting defects, defects behind close concrete reinforcement), because the electromagnetic waves are completely reflected at metals. The acoustic methods are able to compensate this deficit i.e. Acoustic waves can penetrate through metal. But acoustic waves in the ultrasonic range are completely reflected by air layers. Air layers have smaller influence on radar propagation, so that both methods complement each other. In order to be able to combine the NDT-data from several methods records at the same volume, the different data setsmodes of signals must be adapted. The ultrasonic and radar data have to be reconstructed with programs based on the Synthetic Aperture Focusing Technique (SAFT) before data fusion. Subsequently, a conversion of the data into a uniform format has to be carried out. This is a prerequisite in order to keep the data exchange between the project partners as simple as possible. After the data sets are imported and transferred into a common reference system, they can be processed with operations according to the purpose of the investigation. Results, which have been achieved in concrete test specimen with radar and ultrasonics, will be presented and will show the feasibility of the data fusion method. KW - Non-destructive testing KW - Radar KW - Ultrasonic KW - Impact-echo KW - Data fusion KW - SAFT PY - 2005 SN - 1359-5997 SN - 1871-6873 VL - 38 IS - 283 SP - 817 EP - 826 PB - Springer CY - Dordrecht AN - OPUS4-11591 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wendrich, Astrid A1 - Trela, Christiane A1 - Krause, Martin A1 - Maierhofer, Christiane A1 - Effner, Ute A1 - Wöstmann, Jens T1 - Location of voids in masonry structures by using radar and ultrasonic traveltime tomography T2 - 9th European Conference on NDT CY - Berlin, Germany DA - 2006-09-25 PY - 2006 SN - 3-931381-86-2 SP - 1(?) EP - 6(?) PB - European Federation for Non-Destructive Testing CY - Berlin AN - OPUS4-14015 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mayer, K. A1 - Langenberg, K.-J. A1 - Krause, Martin A1 - Maierhofer, Christiane A1 - Milmann, Boris A1 - Kohl, Christoph T1 - Characterization of ultrasonic and radar reflector types in concrete by phase evaluation of the signal and the reconstructed image T2 - 9th European Conference on NDT CY - Berlin, Germany DA - 2006-09-25 KW - NDT-CE KW - Ultrasonic echo KW - Radar KW - Phase evaluation KW - Modeling of wave propagation KW - Reconstruction calculation PY - 2006 SN - 3-931381-86-2 SP - 1 EP - 8(?) PB - European Federation for Non-Destructive Testing CY - Berlin AN - OPUS4-14225 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wiggenhauser, Herbert A1 - Krause, Martin A1 - Maierhofer, Christiane A1 - Algernon, Daniel A1 - Gardei, André A1 - Gräfe, Boris A1 - Kohl, Christoph A1 - Lausch, Regine A1 - Mielentz, Frank A1 - Milmann, Boris A1 - Streicher, Doreen A1 - Zacher, Gerhard T1 - Grundlagen kombinierter zerstörungsfreier Prüfverfahren zur Untersuchung von Betonbauteilen T2 - Forschergruppe 384 Abschlusskolloquium CY - Bergisch Gladbach, Deutschland DA - 2007-05-03 PY - 2007 SP - 23 EP - 44 PB - BAM CY - Berlin AN - OPUS4-14805 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maierhofer, Christiane A1 - Zacher, Gerhard A1 - Wöstmann, Jens A1 - Krause, Martin A1 - Streicher, Doreen A1 - Milmann, Boris T1 - Bewertung von Radar- und Ultraschalldaten mit Hilfe der Datenfusion T2 - DGZfP-Jahrestagung 2007 CY - Fürth, Deutschland DA - 2007-05-14 KW - ZfPBau KW - Stahlbeton KW - Spannbetonbrücken KW - Bewehrung KW - Spannglieder KW - Radar KW - Ultraschall KW - Datenfusion PY - 2007 SN - 978-3-931381-98-1 SP - 1 EP - 8 PB - DGZfP CY - Berlin AN - OPUS4-15991 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Mittag, Kornelia A1 - Colla, Camilla A1 - Krause, Martin A1 - Maierhofer, Christiane A1 - Mielentz, Frank A1 - Milmann, Boris A1 - Schneider, Gerhard A1 - Wöstmann, Jens A1 - Wiggenhauser, Herbert T1 - Zerstörungsfreie Messungen zur Beurteilung des inneren Zustandes fester Fahrbahnen der Deutschen Bahn AG: Vergleichsmessungen an Probeaufbauten im Labor N2 - Im Rahmen eines FE-Projektes “Inspektion Fester Fahrbahnen“ der BAM und der Deutschen Bahn AG geht es um die Anwendung und weitere Entwicklung zerstörungsfreier Messverfahren zur Beurteilung des Zustandes Fester Fahrbahnen. Nach ersten Versuchsreihen direkt im Gleis wurden für verschiedene Bauarten die charakteristischen Herstellungsbedingungen simuliert und systematisch untersucht. Die kombinierte Anwendung der drei Messverfahren Ultraschall-Array-, Impakt-Echo- und Impuls-Radar-Verfahren wird hier an dem Beispiel “Betonschwelle in Betoneinbettung” dargestellt. T2 - Fachtagung Bauwerksdiagnose - Praktische Anwendungen Zerstörungsfreier Prüfungen CY - Leipzig, Germany DA - 25.10.2001 KW - Impakt-Echo-Messverfahren KW - Impuls-Radar-Messverfahren KW - Ultraschall-Array-Messverfahren PY - 2001 VL - 76-CD SP - 1 EP - 8 PB - Deutsche Gesellschaft für Zerstörungsfreie Prüfung (DGZfP) CY - Berlin AN - OPUS4-1201 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Mittag, Kornelia A1 - Gardei, André A1 - Krause, Martin A1 - Maierhofer, Christiane A1 - Wiggenhauser, Herbert A1 - Giertz, M. T1 - Verfahrensentwicklung zur Qualitätssicherung Fester Fahrbahnen mit zerstörungsfreien Prüfverfahren T2 - Symposium Feste Fahrbahn CY - Berlin, Deutschland DA - 2002-06-12 PY - 2002 SN - 3-9809335-3-9 SP - 1(?) EP - 10(?) PB - IFV Bahntechnik CY - Berlin ET - 2 AN - OPUS4-1395 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Colla, Camilla A1 - Krause, Martin A1 - Maierhofer, Christiane A1 - Höhberger, H.-J. A1 - Sommer, H. T1 - Combination of NDT techniques for site investigation of non-ballasted railway tracks N2 - Today's civil engineering NDT needs are for quantitative, fast to apply and easy to interpret methods. They are required on site both for evaluation of existing structures/infrastructure and for quality control in new construction. With this purpose, BAM has carried out in-situ feasibility studies, using radar, impact-echo and ultrasonic-echo methods. Two examples are given of their combined application on different railway slab–track constructions, using high frequency radar, scanning impact-echo and ultrasonic array methods. The aim was to evaluate limitations and advantages, comparability and complementarity of these methods. The on-site measurements demonstrated the possibility to investigate, with good accuracy via NDT, the bonding conditions between sleepers and slab, to locate voids and measure layer thickness. The acoustic and electromagnetic methods used, were found to be complementary. KW - Concrete KW - NDT KW - Impact echo KW - Ultrasonics KW - Radar KW - Railway PY - 2002 DO - https://doi.org/10.1016/S0963-8695(01)00033-0 SN - 0963-8695 VL - 35 SP - 95 EP - 105 PB - Butterworth-Heinemann CY - Oxford AN - OPUS4-1858 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Streicher, Doreen A1 - Algernon, Daniel A1 - Kohl, Christoph A1 - Krause, Martin A1 - Maierhofer, Christiane A1 - Wiggenhauser, Herbert ED - Cruz, P. ED - Frangopol, D. T1 - Development and combined application of NDT echo-methods for the investigation of post tensioned concrete bridges T2 - 3rd International Conference on Bridge Maintenance, Safety and Management - "Bridge Maintenance, Safety, Management, Life-Cycle Performance and Cost" CY - Porto, Portugal DA - 2006-07-16 KW - Brückenuntersuchung KW - ZfP-Bau-Verfahren PY - 2006 SN - 0-415-40315-4 N1 - Serientitel: Balkema proceedings and monographs in engineering, water and earth sciences – Series title: Balkema proceedings and monographs in engineering, water and earth sciences SP - 1 EP - 8(?) PB - Taylor & Francis CY - London AN - OPUS4-13866 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Beutel, R. A1 - Reinhardt, H.-W. A1 - Grosse, C. U. A1 - Glaubitt, A. A1 - Krause, Martin A1 - Maierhofer, Christiane A1 - Algernon, Daniel A1 - Wiggenhauser, Herbert A1 - Schickert, M. T1 - Performance Demonstration of Non-Destructive Testing Methods T2 - 9th European Conference on NDT CY - Berlin, Germany DA - 2006-09-25 KW - NDT-CE KW - Concrete KW - Ultrasonic echo KW - Impact-echo KW - Radar KW - Concrete cover of tendon ducts KW - Thickness measurement KW - Concrete slabs PY - 2006 SN - 3-931381-86-2 SP - 1(?) EP - 9(?) PB - European Federation for Non-Destructive Testing CY - Berlin AN - OPUS4-14382 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CHAP A1 - Beutel, R. A1 - Reinhardt, H.-W. A1 - Große, C. A1 - Krause, Martin A1 - Algernon, Daniel A1 - Streicher, Doreen A1 - Maierhofer, Christiane A1 - Glaubitt, A. T1 - Quantitativer Verfahrensvergleich KW - ZfPBau KW - Ultraschallecho KW - Radar KW - Impact-Echo KW - Dickenmessung KW - Betondeckung KW - Hüllrohrortung KW - Betonbauteile PY - 2006 SN - 978-3-433-01833-0 SN - 0342-7617 VL - 1 IS - Kap. V / Abschnitt 11 SP - 567 EP - 573 PB - Ernst CY - Berlin AN - OPUS4-14379 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Taffe, Alexander A1 - Maierhofer, Christiane A1 - Krause, Martin A1 - Gardei, André A1 - Niederleithinger, Ernst A1 - Hasenstab, Andreas A1 - Hemmleb, Matthias A1 - Wiggenhauser, Herbert A1 - Borchardt, Kerstin T1 - ZfPBau-Kompendium 2004 N2 - Dieses Kompendium ist ein kurzgefasster Abriss, ein Leitfaden und auch ein Handbuch der für den Einsatz im Bauwesen geeigneten zerstörungsfreien Prüfverfahren. In strenger, stets gleicher Gliederung wird jede der mehr als 100 Untersuchungsmethoden in einem eigenen Geräteblatt beschrieben. Hinzu kommen Querverweise zu alternativen Prüfmethoden sowie zahlreiche Hinweise auf einschlägige Fachliteratur und zu bekannt gewordenen Geräteherstellern, Lieferanten und Dienstleistern. PY - 2007 N1 - Das "ZfPBau-Kompendium 2004" war eine Datenbank, die von 2007 bis 2015 im Internet verfügbar war; sie wurde ersatzlos vom Netz genommen, als sie nicht mehr aktuell war – The "ZfPBau-Kompendium 2004" was a database that was accessible on the internet from 2007 to 2015; it was deleted without replacement when it wasn't up-to-date anymore PB - Bundesanstalt für Materialforschung und -prüfung CY - Berlin AN - OPUS4-1497 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Maierhofer, Christiane A1 - Krause, Martin A1 - Niederleithinger, Ernst A1 - Wiggenhauser, Herbert T1 - Non-destructive testing methods at BAM for damage assessment and quality assurance in civil engineering N2 - The structural safety, durability and performance of the infrastructure is of primary interest in every country. An efficient system for early and regular structural assessment as well as for quality assurance during and after the construction of new structures and of reconstruction processes is urgently required. At BAM, NDT methods to be applied in civil engineering are developed and their application improved. From the experience of on-site assessments, quality assurance systems and methodologies for regular inspections are elaborated. This work is mainly performed in the frame of externally funded research projects. T2 - 6th International Symposium Non-Destructive Testing in Civil Engineering (NDT-CE) CY - Berlin, Germany DA - 2003-09-16 KW - Non-destructive testing in civil engineering KW - Radar KW - Ultrasonics KW - Impact-echo KW - Impulse thermography KW - Concrete KW - Masonry PY - 2003 UR - http://www.ndt.net/article/ndtce03/papers/v068/v068.htm SN - 3-931381-49-8 PB - DGZfP CY - Berlin AN - OPUS4-3160 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Krause, Martin A1 - Bärmann, R. A1 - Frielinghaus, R. A1 - Kreschmar, F. A1 - Krogge, O. A1 - Langenberg, K. A1 - Maierhofer, Christiane A1 - Müller, W. A1 - Neisecke, J. A1 - Schickert, M. A1 - Schmitz, V. A1 - Wiggenhauser, Herbert A1 - Wollbold, F. ED - Schickert, G. T1 - Comparison of pulse-echo-methods for testing concrete T2 - International Symposium Non-Destructive Testing in Civil Engineering (NDT-CE) CY - Berlin, Germany DA - 1995-09-26 KW - Beton KW - Radar KW - Aufprallecho KW - Ultraschall KW - Prüfung PY - 1995 SN - 3-931381-02-1 N1 - Serientitel: BB / DGZfP – Series title: BB / DGZfP SP - 281 EP - 295 PB - DGZfP, Dt. Ges. für Zerstörungsfreie Prüfung e.V. CY - Berlin AN - OPUS4-593 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Krause, Martin A1 - Maierhofer, Christiane A1 - Ewert, Uwe T1 - Prüfung von bewehrtem Beton mit Radar, Ultraschall-Impulsecho und Durchstrahlverfahren (Erweitertes Abstract) T2 - Erstes franz.-dt. Seminar für zerstörungsfreie Prüfung CY - Metz, Frankreich DA - 1995-10-12 KW - Beton, bewehrt KW - Prüfung KW - Radar KW - Ultraschall-Impulsecho KW - Durchstrahlungsverfahren PY - 1995 CY - Metz AN - OPUS4-594 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Rösch, A. A1 - Hillemeier, B. A1 - Porzig, Ekkehard A1 - Krause, Martin A1 - Maierhofer, Christiane ED - Schickert, G. T1 - Air voids, poor compaction and areas of low concrete strength detection in concrete by pulse velocity measurements T2 - International Symposium Non-Destructive Testing in Civil Engineering (NDT-CE) CY - Berlin, Germany DA - 1995-09-26 KW - Beton, Stabilität KW - Ultraschall KW - Fehlstelle KW - Hohlraum PY - 1995 SN - 3-931381-02-1 N1 - Serientitel: BB / DGZfP – Series title: BB / DGZfP VL - 2 SP - 895 EP - 902 PB - DGZfP, Dt. Ges. für Zerstörungsfreie Prüfung e.V. CY - Berlin AN - OPUS4-595 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -