TY - CONF A1 - Habel, M. A1 - Vaterrodt, K. A1 - Heidmann, G. A1 - Habel, Wolfgang A1 - Vogelsang, R. A1 - Weissenberg, W. A1 - Sekula, O. A1 - Pepper, D. A1 - Emanuel, H. A1 - Plath, R. T1 - Optical PD detection in stress cones of HV cable accessories N2 - Sensitive partial discharge (PD) measurements on HV/EHV cable systems are usually based on electrical or electromagnetic PD detection. Unfortunately, interferences may significantly reduce sensitivity, especially in on-site after-installation testing and, even more, in on-line PD monitoring. This paper deals with optical PD detection, which is absolutely immune to any kind of electromagnetic interference. Optical PD detection necessarily requires transparent or translucent insulation systems to be applicable. Stress cone elements for HV/EHV cable accessories meet the requirements for optical PD detection, if made from transparent silicone elastomers. T2 - 8th International Conference on Insulated Power Cables CY - Versailles, France DA - 19.06.2011 PY - 2011 IS - B.8.4 SP - 1 EP - 5 PB - Jicable CY - Paris AN - OPUS4-25310 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Habel, Wolfgang A1 - Röben, R. A1 - Hüttl, R. A1 - Kuchejda, M. ED - Ramos, G. A. T1 - Monitoring of corrosion protection in reinforced concrete structures using an integrated pH optode N2 - Corrosion in steel-reinforced concrete structures is a critical issue. Corrosion appears if the pH value of the concrete matrix decreases due to deterioration of the Calcium hydroxide layer on the Steel surface. The safest Information about potential danger of Steel corrosion is the knowledge of the pH value of concrete. The paper presents a Tiber optic pH sensor for long-term monitoring of the pH value of reinforced concrete structures at risk from corrosion. The sensor probe is small (about 8 mm in diameter), can be embedded into the concrete matrix and observe changes in pH over years. Several sensor probes can be staggered to detect the progression of pH decrease. The pH values can be resolved with 0.1 to 0.2 pH value in the ränge between 12.0 and 9.5. The structure of the pH measurement System, longterm test results and the design to achieve stable probes will be explained. Experienee from test applications of pH sensors embedded in grouted anchors and in concrete components for a cooling tower will be presented. T2 - SHMII-5 - 5th International conference on structural health monitoring of intelligent infrastructure CY - Cancún, Mexico DA - 11.12.2011 PY - 2011 IS - Session 15, Topic 4.5 SP - 2 EP - 8 PB - National Autonomous University of Mexico CY - Mexico City AN - OPUS4-25311 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Thiele, E. A1 - Erth, H. A1 - Arnold, R. A1 - Habel, Wolfgang A1 - Krebber, Katerina A1 - Döring, H. A1 - Glötzl, R. T1 - Applikation optischer Fasern in Textilflächen T2 - 45. Internationale Chemiefasertagung CY - Dornbirn, Österreich DA - 2006-09-21 KW - Optische Fasern KW - Faseroptische Sensoren KW - Geotextilien PY - 2006 SP - 1 EP - 5(?) CY - Dornbirn AN - OPUS4-14457 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Siebler, Daniel A1 - Rohwetter, Philipp A1 - Lothongkam, Chaiyaporn A1 - Habel, Wolfgang A1 - Heidmann, G. A1 - Vaterrodt, K. A1 - Leistner, A. A1 - Leistner, A. A1 - Pepper, D. A1 - Brusenbach, R. A1 - Plath, R. T1 - Empfindliche optische Detektion von Teilentladungen in transparenten und transluzenten Silikonelastomeren T2 - 6. Fachtagung Diagnostik elektrischer Betriebsmittel CY - Berlin, Germany DA - 2014-11-25 KW - Optische Teilentladungsdetektion KW - Transparente Silikonelastomere KW - Elektrische Betriebsmittel PY - 2014 SN - 978-3-8007-3648-5 SP - 1 EP - 5(?) PB - VDE Verlag GmbH AN - OPUS4-32532 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - RPRT A1 - Habel, Wolfgang R. T1 - Faseroptische Sensoren für hochaufgelöste Verformungsmessungen in der Zementsteinmatrix N2 - Steife Faser-Bragg-Gitter-Sensoren und bewegliche Faser-Mikrodistometer (extrinsische Fabry-Pérot-Interferometer-Sensoren) bieten der Baustoff-Forschung und der baubegleitenden Qualitätssicherung einzigartige Möglichkeiten, Mikroverformungen in der Zementsteinmatrix nahezu rückwirkungsfrei bereits zum Beginn der Erstarrung und ebenso nach der Erhärtung zu messen. Zuverlässige Meßaussagen im Zementsteingefüge erfordern jedoch eine gezielte Dimensionierung sowie ausreichende Haftung in der Matrix. Die Arbeit beschreibt die physikalischen Grundlagen der Sensoren und definiert Dimensionierungskriterien. Der Einfluss der betonchemischen Beanspruchung auf Festigkeit und Langzeitstabilität der eingebetteten Sensorfasern (Glas, Coating) wird untersucht. T3 - BAM Forschungsberichtreihe - 246 PY - 2004 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:b43-2040 SN - 978-3-89701-567-6 SN - 0938-5533 VL - 246 SP - 1 EP - 204 PB - Wirtschaftsverlag NW CY - Bremerhaven AN - OPUS4-204 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Hofmann, Detlef A1 - Basedau, Frank A1 - Habel, Wolfgang A1 - Gloetzl, R. ED - López-Higuera, J. M. T1 - Lightning-safe diaphragm pressure gauge for geotechnical applications using a long-term reliable absolute EFPI sensor T2 - 2nd European Workshop on Optical Fibre Sensors ; 2nd EWOFS '04 CY - Santander, Spain DA - 2004-06-09 KW - Pressure sensor KW - Fibre Fabry-Pérot interferometer KW - Geotechnical application KW - Precise deformation measurement KW - Long-term stability PY - 2004 SN - 0-8194-5434-6 U6 - https://doi.org/10.1117/12.566543 SN - 0038-7355 N1 - Serientitel: SPIE proceedings series – Series title: SPIE proceedings series IS - 5502 SP - 128 EP - 131 PB - SPIE CY - Bellingham, Wash. AN - OPUS4-3844 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Dantan, Nathalie A1 - Habel, Wolfgang A1 - Hillemeier, B. A1 - Hüttl, R. T1 - Entwicklung eines faseroptischen pH-Sensors zur Früherkennung korrosionsgefährdender Zustände in Stahlbeton T2 - Tagung Bauchemie der GDCh-Fachgruppe Bauchemie CY - Berlin, Deutschland DA - 2005-09-29 KW - Korrosion KW - Stahlbeton KW - Monitoring KW - pH KW - Faseroptischer Sensor KW - Langzeitstabilität KW - Indikator KW - Immobilisierung PY - 2005 SP - 242 EP - 248 PB - GDCh CY - Frankfurt am Main AN - OPUS4-11559 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Dantan, Nathalie A1 - Habel, Wolfgang A1 - Hillemeier, B. A1 - Hüttl, R. A1 - Dietz, K. T1 - Bauteil-integrierbarer faseroptischer pH-Sensor zur Schadensfrüherkennung im Stahlbeton- und Spannbetonbau T2 - DGZfP-Fachtagung Bauwerksdiagnose "Praktische Anwendungen Zerstörungsfreier Prüfungen" CY - Berlin, Deutschland DA - 2006-02-22 KW - Korrosion KW - Stahlbewehrung KW - Monitoring KW - pH-Optode KW - Langzeitstabilität PY - 2006 SN - 3-931381-71-4 SP - 225 EP - 232 PB - DGZfP CY - Berlin AN - OPUS4-12201 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Gloetzl, R. A1 - Hofmann, Detlef A1 - Basedau, Frank A1 - Habel, Wolfgang ED - Udd, E. T1 - Geotechnical Pressure Cell Using a Long-Term Reliable High-Precision Fibre Optic Sensor Head T2 - 12th SPIE International Symposium "Smart Structures and Materials 2005 CY - San Diego, CA, USA DA - 2005-03-06 KW - Pressure sensor KW - Fabry-Pérot interferometer KW - Geotechnics KW - Deformation measurement KW - Long-term stability PY - 2005 SN - 0-8194-5739-6 SN - 1605-7422 N1 - Serientitel: SPIE proceedings series – Series title: SPIE proceedings series IS - 5758 SP - 248 EP - 253 PB - SPIE CY - Bellingham AN - OPUS4-11769 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Habel, Wolfgang R. A1 - Krebber, Katerina A1 - Daum, Werner T1 - Results in standardization of FOS to support the use of SHM systems N2 - Measurement and data recording systems are important parts of a holistic Structural Health Monitoring (SHM) system. New sensor technologies such as fiber-optic sensors are often used; however, standards (or at least guidelines) are not yet available or internationally approved. This lack in standardization makes the acceptance of FOS technologies in complex SHM systems substantially difficult. A standard family for different FOS technologies is therefore being developed that should help to design SHM systems in an optimal way. International standardization activities take place in several standardization bodies such as IEC and ASTM, and within SHM societies such as ISHMII. The paper reports on activities in standardization of fiber-optic sensors, on results already achieved, and on newly started projects. Combined activities of fiber sensor experts and SHM experts from Civil Engineering are presented. These contributions should help owners of structures as well as developers of sensors and monitoring systems to select effective and validated sensing technologies. Using these standards, both parties find recommendations how to proceed in development of SHM systems to evaluate the structural behavior based on e.g. standardized fiber optic sensors, and to derive necessary measures, e.g. the optimal maintenance strategy. T2 - Sixth European Workshop on Optical Fibre Sensors CY - Limerick, Ireland DA - 30.05.2016 KW - Fiber-optic sensor KW - Standard KW - Temperature KW - Strain KW - Monitoring KW - Structural health KW - Application PY - 2016 U6 - https://doi.org/10.1117/12.2236863 SN - 0277-786X VL - 9916 SP - 991625-1 EP - 991625-4 AN - OPUS4-37053 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Schallert, M. A1 - Habel, Wolfgang A1 - Göbel, I.R. A1 - Stahlmann, J. A1 - Wardinghus, P. ED - J.A. Santos, T1 - Dynamic and static testing of concrete foundation piles with structure-integrated fiber optic sensors T2 - 8th International Conference on the Application of Stress Wave Theory to Piles - Science, Technology and Practice CY - Lisbon, Portugal DA - 2008-09-08 KW - Concrete-embedded fiber optic sensors KW - Fabry-Perot sensor KW - Pile integrity testing (PIT) KW - Dynamic load testing (DLT) KW - Numerical modeling KW - Precast driven piles PY - 2008 SN - 978-1-58603-909-7 SP - 625 EP - 634 PB - IOS Press AN - OPUS4-18275 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Habel, Wolfgang A1 - Baumann, I. A1 - Berghmans, F. A1 - Borzycki, K. A1 - Chojetzki, C. A1 - Haase, K.-H. A1 - Jaroszewicz, L.R. A1 - Kleckers, T. A1 - Niklès, M. A1 - Rothhardt, M. A1 - Schlüter, Vivien A1 - Thévenaz, L. A1 - Tur, M. A1 - Wuilpart, M. T1 - Guidelines for the characterization and use of fibre optic sensors - Basic definitions & a proposed standard for FBG-based strain sensors N2 - This paper describes the outcome of two groups which are involved in the specification of guidelines for fibre optic sensors performance and testing. The "Guideline for use of fibre optic sensors" from the COST-299 guideline group, and the "Optical Strain Sensor based on Fibre Bragg Grating" from the GESA guideline group of the VDI - "The Association of German Engineers". Through appropriate specifications and definitions, both guidelines aim at enabling better understanding of fibre optic sensors characteristics and performances. A concise view into the structure of the guidelines is presented, emphasizing important aspects. The English version of the two guidelines will be available in autumn 2009. KW - Guideline KW - Standards KW - Fibre optic sensor KW - Strain sensor KW - Fibre Bragg grating KW - Distributed sensor PY - 2009 U6 - https://doi.org/10.1117/12.835362 SN - 0038-7355 SN - 0361-0748 SN - 0277-786X VL - 7503 SP - 75035E-1 - 75035E-4 PB - SPIE, The International Society for Optical Engineering CY - Billingham, Wash. AN - OPUS4-20110 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -