TY - GEN A1 - Algernon, Daniel A1 - Schubert, F. A1 - Wiggenhauser, Herbert T1 - Impact-Echo: Experimental and Numerical Study of Acoustic Wave Propagation T2 - NDE Conference on Civil Engineering CY - St. Louis, Missouri, USA DA - 2006-08-14 KW - Impact-Echo KW - Nondestructive Testing KW - Geometry Effects KW - EFIT PY - 2006 SN - 1-57117-148-7 SP - 215 EP - 222 PB - ASTM CY - St. Louis AN - OPUS4-14123 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Algernon, Daniel A1 - Wiggenhauser, Herbert T1 - Impact-Echo Signal Processing T2 - NDE Conference on Civil Engineering CY - St. Louis, Missouri, USA DA - 2006-08-14 KW - Impact-Echo KW - Nondestructive Testing KW - Geometry Effects KW - EFIT PY - 2006 SN - 1-57117-148-7 SP - 207 EP - 214 PB - ASTM CY - St. Louis AN - OPUS4-14126 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wiggenhauser, Herbert T1 - Automated NDE of post-tensioned concrete bridges using imaging echo methods T2 - International Conference on Bridges, COST 534 Meeting CY - Dubrovnik, Croatia DA - 2006-05-21 PY - 2006 AN - OPUS4-14302 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Algernon, Daniel A1 - Wiggenhauser, Herbert A1 - Schubert, F. T1 - A new approach for the investigation of geometry effects in impact-echo measurements - experimental results and numerical simulations N2 - Impact-Echo (IE) measurements on concrete structures with compact dimensions are influenced by geometry effects, i.e. reflections especially of the surface waves at the boundaries of the test object, which in fact can lead to misinterpretation of the results. In contrast to the normal reflection arrangement, in which the excitation and the measuring sensor are placed on the same side of the specimen, measurements were carried out in a transmission arrangement, where the impactor and the measuring sensor are placed opposite to each other. This serves to reduce the influence of surface waves, and to investigate further their responsibility for the existence of geometry effects. Results obtained from laboratory specimens with smooth surfaces were still seriously affected by geometry effects. Numerical simulations led to the conclusion that surface waves travel around the edges of the specimen, thus creating geometry effects even on the opposite side. Measurements on a specimen, which was cut out from a bridge structure and had irregular connecting planes between the excitation and the measurement side, proved to be remarkably less affected. In order to analyze and visualize the surface wave propagation an arrangement is used, in which the excitation is fixed at a certain point on one plane of the specimen. A transducer scans all planes of the specimen in phase with the excitation. Time slices show the instantaneous wave field on all planes of the specimen. These are compared with numerical simulations. In particular, it can be proved that surface waves indeed travel around the edges of a specimen with smooth connecting planes, thus creating geometry effects even in the transmission arrangement. T2 - 9th European Conference on NDT CY - Berlin, Germany DA - 2006-09-25 KW - Impact-Echo KW - Nondestructive Testing KW - Geometry Effects KW - EFIT PY - 2006 UR - http://www.ndt.net/article/ecndt2006/doc/P19.pdf SN - 3-931381-86-2 SP - 1 EP - 10 PB - European Federation for Non-Destructive Testing CY - Berlin AN - OPUS4-14434 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 - CONF A1 - Streicher, Doreen A1 - Algernon, Daniel A1 - Wöstmann, Jens A1 - Behrens, Matthias A1 - Wiggenhauser, Herbert T1 - Automated NDE of post-tensioned concrete bridges using imaging echo methods T2 - 29. Darmstädter Massivbauseminar, "Sicherheitsgewinn durch Monitoring?" CY - Darmstadt, Germany DA - 2006-09-14 KW - Zerstörungsfreie Prüfung im Bauwesen KW - Brückenuntersuchungen PY - 2006 SP - 477 EP - 487 PB - Freunde des Instituts für Massivbau der Technischen Universität Darmstadt CY - Darmstadt AN - OPUS4-14397 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wiggenhauser, Herbert T1 - Automated NDE of post-tensioned concrete bridges using radar, ultrasonic echo and impact-echo T2 - Colorado Concrete 2006, ACI Fall Convention, 228 Committee Meeting CY - Denver, CO, USA DA - 2006-11-05 PY - 2006 AN - OPUS4-14359 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wiggenhauser, Herbert T1 - Automated application and combination of non-destructive echo methods for the investigation of post-tensioned concrete bridges T2 - Concrete Platform 2007 CY - Belfast, Northern Ireland DA - 2007-04-19 PY - 2007 AN - OPUS4-14773 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wiggenhauser, Herbert T1 - Development and combined application of NDT echo-methods for the investigation of post tensioned concrete bridges T2 - Sonderkolloquium zum 60. Geburtstag von Dr. Gerd Dobmann CY - Saarbrücken, Germany DA - 2006-11-03 PY - 2006 AN - OPUS4-14357 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wiggenhauser, Herbert T1 - Application of the Hilbert-Huang Transform for the impact-echo data analysis T2 - TRB 85th Annual Meeting, AFF40(1) Sub-Committee Meeting CY - Washington, D.C., USA DA - 2006-01-22 PY - 2006 AN - OPUS4-14355 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wiggenhauser, Herbert T1 - Automated NDE of post-tensioned concrete bridges using radar, impact-echo and ultrasonic echo T2 - 2006 NDE Conference on Civil Engineering CY - St. Louis, MO, USA DA - 2006-08-14 PY - 2006 AN - OPUS4-14358 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wiggenhauser, Herbert A1 - Streicher, Doreen A1 - Algernon, Daniel A1 - Wöstmann, Jens A1 - Behrens, Matthias ED - Russel, M. ED - Basheer, P. T1 - Automated application and combination of non-destructive echo methods for the investigation of post-tensioned concrete bridges T2 - Concrete Platform CY - Belfast, Großbritannien, Northern Ireland DA - 2005-04-19 KW - Automated testing KW - Data fusion KW - Impact-echo KW - Post-tensioned concrete bridges KW - Radar KW - Ultrasonic echo PY - 2007 SN - 978-0-85389-913-6 SP - 261 EP - 269 PB - Queen's University of Belfast CY - Belfast AN - OPUS4-14792 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Algernon, Daniel A1 - Wiggenhauser, Herbert T1 - Impact-Echo Data Analysis Based on the Hilbert-Huang Transform T2 - TRB 86th Annual Meeting CY - Washington, D.C., USA DA - 2007-01-21 KW - Impact-Echo KW - Hilbert-Huang KW - Transformation PY - 2007 SP - 1 EP - 14 CY - Washington, D.C., USA AN - OPUS4-17469 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst A1 - Wiggenhauser, Herbert A1 - Milmann, Boris T1 - LAUS - Erste praktische Erfahrungen mit einem neuartigen Ultraschallsystem großer Eindringtiefe N2 - Konventionelle Systeme zur Ultraschall-Echo-Prüfung von Betonbauteilen sind in ihrer Eindringtiefe auf etwa einem Meter begrenzt. Zur Prüfung stärkerer Objekte war die Entwicklung eines neuartigen Prüfsystems notwendig. Das LAUS-System (Large Aperture UltraSound) besteht aus 12 einzelnen Arrays, die mit jeweils 32 Einzelprüfköpfen (Scherwellen, 25 – 50 kHz) als Sender oder Empfänger betrieben werden können. Sie werden unabhängig auf Betonoberflächen mit Unterdruck befestigt und kommunizieren drahtlos untereinander und mit der Zentraleinheit. Alle möglichen Kombinationen ergeben 132 Einzelmessungen, die zur Rekonstruktion des durchschallten Volumens genutzt werden. Mehrere dieser Datensätze lassen sich zu einer 3D-Auswertung kombinieren. Das System wurde an mehreren Testobjekten und Bauwerken erfolgreich erprobt. So konnte die fünf Meter dicke, sehr stark bewehrte Fundamentplatte des Fallturms auf dem BAM-Testgelände bei Horstwalde durchschallt werden. Ein zweites Beispiel ist die erfolgreiche Detektion von Spannkanälen in 1,8 m Tiefe in einem massiven Brückenbauwerk. T2 - Fachtagung Bauwerksdiagnose 2018 CY - Berlin DA - 15.2.2018 KW - Beton KW - Ultraschall KW - LAUS KW - Brücke KW - Fundament PY - 2018 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-445786 UR - https://www.bauwerksdiagnose2018.de/Portals/bauwerksdiagnose2018/BB/16.pdf SP - Paper 16, 1 EP - 8 CY - Berlin AN - OPUS4-44578 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - RPRT A1 - Arndt, Detlef A1 - Borchardt, Kerstin A1 - Croy, F. A1 - Geyer, Emil A1 - Henschen, Joachim A1 - Maierhofer, Christiane A1 - Niedack, Marianne A1 - Rudolphi, Michael A1 - Schaurich, Dieter A1 - Weise, Frank A1 - Wiggenhauser, Herbert T1 - Anwendung u. Kombination zerstörungsfreier Prüfverfahren zur Bestimmung der Mauerwerksfeuchte im Deutschen Dom N2 - Am Deutschen Dom wurden Mikrowellenabsorptionsmessungen, Radar und Infarot- Thermographie als moderne zerstörungsfreie Prüfverfahren der Feuchtemessung in Mauerwerk erprobt. Ergänzende numerische Simulationsrechnungen des gekoppelten Wärme- und Feuchtetransports sollen bei der Auswahl von Trockenlegungskonzepten helfen. T3 - BAM Forschungsberichtreihe - 200 PY - 1994 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-2509 SN - 978-3-89429-423-X SN - 0938-5533 VL - 200 SP - 1 EP - 84 PB - Wirtschaftsverlag NW CY - Bremerhaven AN - OPUS4-250 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wiggenhauser, Herbert T1 - Acoustic and electromagnetic waves in nondestructive testing in civil engineering N2 - Research and Development; Application of NDT for Civil Structures; Reference Specimen; Validation of Testing Solutions; Standardization; Training; Structural Investigation (thickness, location of elements, cracks, ...); Material Properties (strength, composition, moisture, …) T2 - WAVES Workshop Cambridge CY - Cambridge, UK DA - 26.03.2017 KW - Acoustic KW - Electromagnetic KW - Waves PY - 2017 AN - OPUS4-39629 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Niederleithinger, Ernst A1 - Helmerich, Rosemarie A1 - Streicher, Doreen A1 - Stoppel, Markus A1 - Wiggenhauser, Herbert ED - Forde, M. T1 - Automated non-destructive investigation of railway bridge condition T2 - 11th International Conference and Exhibiton "Structural Faults and Repair - 2006" CY - Edinburgh, Scotland, UK DA - 2006-06-13 KW - Non-Destructive Testing KW - Automated scanning device KW - Combination of methods KW - Ultrasonic-echo KW - Impact-echo KW - Impulse radar PY - 2006 SN - 0-947644-59-8 SP - 1 EP - 8(?) PB - Engineering Technics Pr., CY - Edingburgh AN - OPUS4-12530 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wiggenhauser, Herbert T1 - The NDT-CE test and validation site at BAM-TTS, Horstwalde T2 - Transportation Research Board (TRB) 89th Annual Meeting CY - Washington, D.C., USA DA - 2010-01-09 PY - 2010 AN - OPUS4-20899 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Helmerich, Rosemarie A1 - Niederleithinger, Ernst A1 - Stoppel, Markus A1 - Wiggenhauser, Herbert ED - Mencik, J. T1 - The role of advanced non-destructive techniques in condition assessment of existing bridges T2 - 2nd International Conference "Reliability, Safety and Diagnostics of Transport Structures and Means 2005" CY - Parduce, Czech Republic DA - 2005-07-07 KW - Condition assessment KW - Non-destructive testing (NDT) KW - Scanning system KW - Impulse radar KW - Ultrasonic echo KW - Impact echo KW - Active thermography KW - LIBS PY - 2005 SN - 80-7194-769-5 SP - 111 EP - 118 PB - University of Pardubice CY - Pardubice AN - OPUS4-7695 LA - eng 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 - CONF A1 - Helmerich, Rosemarie A1 - Niederleithinger, Ernst A1 - Wiggenhauser, Herbert T1 - A toolbox with non-destructive testing methods for the condition assessment of railway bridges N2 - The unified economic structure of the European market requires a unified transport infrastructure to ensure seamless and barrierfree transportation of passengers and goods. The European commission is funding the European Integrated Project Sustainable Bridges to comply with future traffic demands. The main objective of the project is to reliably assess and upgrade the bridge infrastructure for the required increase of axle loads and transport volume. 32 Institutes from 12 countries develop unified procedures for the assessment and improvement of the existing railway bridge stock under the guidance and review of six major European railway companies. Non destructive testing (NDT) is given a high priority. One of the work packages concentrates on the potential of advanced NDT-methods and creates a toolbox with advisable methods for the condition assessment of all types of railway bridges. Although NDT-methods are implemented in the quality assurance process in many industries, their application in the railway infrastructure is not common. Only a few countries have included selected NDT-methods into advanced condition assessment procedures for the management of their bridge stock. This paper describes also current activities to enhance pulse-phase thermography, impulse-radar and acoustic methods. The advanced methods enable infrastructure owners to verify construction plans, to assess structures, repair and strengthening quality or to identify in-service damages. Latest development is an automated scanning system for combined acoustic and electromagnetic measurements. The results are then combined through data fusion techniques to further increase their value for the bridge owners. T2 - 85th TRB Annual Meeting CY - Washington, DC, USA DA - 2006-01-22 KW - Non-Destructive Testing KW - Thermography KW - Railway Bridges KW - NDT-toolbox PY - 2006 SP - 1 EP - 12(?) PB - TRB CY - Washington, D.C. AN - OPUS4-12037 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Niederleithinger, Ernst A1 - Helmerich, Rosemarie A1 - Wiggenhauser, Herbert ED - Cruz, P. ED - Frangopol, D. T1 - Trends in bridge condition assessment using non-destructive testing methods T2 - Bridge Maintenance, Safety, Management, Life-Cycle Performance and Cost CY - Porto, Portugal DA - 2006-07-16 KW - NDT KW - Condition assessment KW - Automation of measurement KW - Data fusion 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 - 933 EP - 934 PB - Taylor & Francis CY - London AN - OPUS4-14037 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Helmerich, Rosemarie A1 - Niederleithinger, Ernst A1 - Wiggenhauser, Herbert T1 - Toolbox with Nondestructive Testing Methods for Condition Assessment of Railway Bridges KW - Non-destructive testing KW - Automated scanning KW - Condition assessment KW - Bridge assessment KW - Ultrasonicecho KW - Impulse radar KW - Impact echo PY - 2006 SN - 0361-1981 IS - 1943 SP - 65 EP - 73 PB - National Research Council CY - Washington, DC AN - OPUS4-14293 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -