TY - CONF A1 - Helmerich, Rosemarie A1 - Niederleithinger, Ernst A1 - Algernon, Daniel A1 - Streicher, Doreen A1 - Wiggenhauser, Herbert T1 - Bridge inspection and condition assessment in Europe T2 - Proceedings of the TRB 87th Annual Meeting T2 - TRB 87th annual meeting CY - Washington, D.C., USA DA - 2008-01-13 KW - Construction KW - Environment and Energy PY - 2008 IS - CD-ROM (Paper 08-1450 / Session 568) SP - 1 EP - 13 PB - TRB CY - Washington, DC AN - OPUS4-16651 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Helmerich, Rosemarie A1 - Maierhofer, Christiane A1 - Röllig, Mathias A1 - Arndt, Ralf A1 - Vielhaber, J. T1 - Bond quality survey of loaded RC-beams with CFRP-plate repair using impulse-thermography T2 - IABMAS'06 - Third International Conference on Bridge Maintenance, Safety and Management T2 - IABMAS'06 - Third International Conference on Bridge Maintenance, Safety and Management CY - Oporto, Portugal DA - 2006-07-16 PY - 2006 AN - OPUS4-14350 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Helmerich, Rosemarie A1 - Maierhofer, Christiane A1 - Röllig, Mathias A1 - Arndt, Ralf A1 - Vielhaber, J. ED - Cruz, P. ED - Frangopol, D. T1 - Bond quality survey of loaded RC beams with CFRP-plate repair using impulse-thermography T2 - Bridge maintenance, safety, management, life-cycle performance and cost T2 - Bridge Maintenance, Safety, Management, Life-Cycle Performance and Cost CY - Porto, Portugal DA - 2006-07-16 KW - Thermography KW - Quality control KW - Bonding KW - Carbon fibre KW - Concrete bridges KW - Repair KW - Strengthening 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 - 331-332 (Book)/ 9 pages (CD-ROM) PB - Taylor & Francis CY - London AN - OPUS4-14412 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Helmerich, Rosemarie A1 - Röllig, Mathias A1 - Maierhofer, Christiane A1 - Schultz, A. T1 - Bond control in CFRP-strengthened RC-structures using active thermography T2 - IABSE 2006 Conference on Operations, Maintenance and Rehabilitation of Large Infrastructure Projects, Bridges and Tunnels T2 - IABSE 2006 Conference on Operations, Maintenance and Rehabilitation of Large Infrastructure Projects, Bridges and Tunnels CY - Copenhagen, Denmark DA - 2006-05-15 PY - 2006 AN - OPUS4-14345 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Helmerich, Rosemarie A1 - Röllig, Mathias A1 - Maierhofer, Christiane A1 - Schultz, A. ED - Vincentsen, L. T1 - Bond Control in CFRP-strengthened RC-structures using Active Thermography T2 - Proceedings of the International Association for Bridge and Structural Engineering (IABSE) Conference on Operation, Maintenance and Rehabilitation of Large Infrastructure Projects, Bridges and Tunnels T2 - Conference on Operation, Maintenance and Rehabilitation of Large Infrastructure Projects, Bridges and Tunnels CY - Copenhagen, Denmark DA - 2006-05-15 KW - Quality control KW - Impulse-Thermography (IR) KW - Debonding KW - Supervision of CFRP-Strengthening KW - Laboratory Testing PY - 2006 SN - 87-91044-03-0 SP - 1(?) EP - 8(?) PB - IABSE CY - Zürich AN - OPUS4-12407 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Helmerich, Rosemarie A1 - Niederleithinger, Ernst A1 - Streicher, Doreen A1 - Stoppel, Markus A1 - Wiggenhauser, Herbert T1 - Automated non-destructive investigation of railway bridge condition T2 - 11th International Conference "Structural Faults and Repair - 2006" T2 - 11th International Conference "Structural Faults and Repair - 2006" CY - Edinburgh, Scotland DA - 2006-06-13 PY - 2006 AN - OPUS4-12576 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 - Structural faults & repair 2006 (Proceedings) 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 - GEN A1 - Herter, Jürgen A1 - Brandes, Klaus A1 - Helmerich, Rosemarie ED - Casas, J. R. T1 - Assessment of the safety and remaining fatigue life of old steel bridges by nondestructive field testing T2 - Bridge maintenance, safety and management : proceedings of the First International Conference on Bridge Maintenance, Safety and Management T2 - 1st International Conference on Bridge Maintenance, Safety and Management ; 1st IABMAS '02 CY - Barcelona, Spain DA - 2002-07-14 KW - Fatigue life KW - Steel bridge KW - Non destructive testing KW - Field test KW - Fracture mechanic KW - Radiographic testing PY - 2002 SN - 84-95999-05-6 PB - International Center for Numerical Methods in Engineering (CIMNE) CY - Barcelona AN - OPUS4-1756 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - RPRT A1 - Kühn, B. A1 - Lukic, M. A1 - Nussbaumer, A. A1 - Günther, H.P. A1 - Helmerich, Rosemarie A1 - Herion, S. A1 - Kolstein, M.H. A1 - Walbridge, S. A1 - Androic, B. A1 - Dijkstra, O. A1 - Bucak, Ö. A1 - Sedlacek, G. A1 - Bijlaard, F. A1 - Géradin, M. A1 - Pinto, A. A1 - Dimova, S. T1 - Assessment of existing steel structures - Recommendations for estimation of remaining fatigue life T2 - JRC Scientific and Technical Reports / EUR - Scientific and Technical Research series KW - Assessment KW - Existing steel structures PY - 2008 SN - 1018-5593 SP - 1 EP - 108 PB - Office for Official Publications of the European Communities CY - Luxembourg AN - OPUS4-17556 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Kühn, B. A1 - Sedlacek, G. A1 - Helmerich, Rosemarie A1 - Nussbaumer, A. ED - Gebbeken, N. T1 - Assessment of existing steel structures - A guideline for estimation of the remaining fatigue life T2 - Munich Bridge Assessment Conference (MBAC 2007) T2 - Munich Bridge Assessment Conference (MBAC 2007) CY - Munich DA - 2007-07-09 KW - Existing structures KW - Fatigue life KW - Bridge assessment KW - Non-destructive testing PY - 2007 SP - 1 EP - 15 PB - Institut für Konstruktiven Ingenieurbau CY - Neubiberg AN - OPUS4-15743 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Wolf, Julia A1 - Mielentz, Frank A1 - Milmann, Boris A1 - Helmerich, Rosemarie A1 - Köpp, Christian A1 - Wiggenhauser, Herbert A1 - Kurz, J.H. A1 - Moryson, R.M. A1 - Samokrutov, A. A1 - Alekhin, S. G. A1 - Alver, Ninel A1 - Sazak, H.Ö. T1 - An ultrasound monitoring system for concrete structures T2 - Istanbul bridge conference 2014 (Proceedings) N2 - The research project "Ultrasonic Net for Concrete Monitoring (UNeCOM)" aims at developing a methodology for an embedded ultrasonic network for the condition assessment of infrastructure constructions. Civil engineering structures made of concrete, which are located in tectonically active regions or undergo special loading conditions, may require continuous monitoring. It is important to assess the condition of the building and its stability to recognise and classify the effect of a seismic event or evolving damage at early stages before failure occurs. Embedded ultrasonic sensors offer the possibility to detect changes in the material and degradation mechanisms from inside the structure in areas which are difficult or impossible to inspect otherwise. In contrast to conventional ultrasonic testing methods, where the concrete surfaces are scanned with ultrasound probes, this new approach uses sensors, which are embedded into concrete, eliminating the effect of variable coupling conditions between sensors and concrete. This method allows an integral detection of changes in the concrete structure, for example due to seismic activities, to detect mechanical impacts, as well as degradation of the material due to overloading. Such methods have great relevance especially for the monitoring of constructions like power plants, bridges, offshore structures and other structures with high technical safety requirements. The sensor network can be controlled remotely through the internet which is also being used for data transfer. The embedded sensor network is designed to monitor structural damage and concrete degradation globally with high sensitivity. T2 - Istanbul bridge conference 2014 CY - Istanbul, Turkey DA - 11.08.2014 KW - Ultrasound KW - Concrete KW - Monitoring PY - 2014 SN - 978-605-64131-6-2 SP - Paper 32, 1 EP - 9 AN - OPUS4-32028 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Helmerich, Rosemarie T1 - Active Thermography N2 - Active thermography is a nondestructive testing method for identification of near surface defects and signs of early deterioration. The presentation explains the potential and Limits of the method and the equipment for application to concrete structures. Advanced data analysis can increase the quality of imaging of the measurement. The method is usually applied once for analysis of the current condition. If applied periodically, the method can be used for observation of a deterioration process. T2 - NDT&E Advanced Training Workshop 2016 CY - Berlin, Germany DA - 14.07.2016 KW - Active thermography KW - Nondestructive testing KW - Data analysis KW - Imaging KW - Bond defect detection KW - Defect localization KW - Automated scanning PY - 2016 AN - OPUS4-38478 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Helmerich, Rosemarie T1 - Active thermography N2 - Active thermography is introduced as tool for diagnostics in civil engineering structures. Aside from basic information, examples for applications of active thermography in different types of structures was presented. Active thermography was applied in historic structures to reveal former components or even ancient openings. Other examples present active thermography as a tool for nondestructive detection of debonding in CFRP strengthened structures. The way is explained, how the system was optimized for different materials. T2 - NDT&E Advanced Training Workshop CY - Berlin, Germany DA - 05.07.2017 KW - Active thermography KW - Strengthening KW - Nondestructive testing KW - Civil structures PY - 2017 AN - OPUS4-42920 LA - eng 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 T2 - Compendium of papers CD-ROM, TRB 85th annual meeting 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 - Helmerich, Rosemarie A1 - Bien, J. A1 - Cruz, P.J.S. ED - Jan Bien, ED - Lennart Elfgren, ED - Jan Olofsson, T1 - A guideline for railway bridge inspection and condition assessment including the NDT toolbox T2 - Sustainable Bridges - Assessment for Future Traffic Demands and Longer Lives KW - Inspection procedure KW - Bridge condition assessment KW - Railway bridges KW - Non-destructive testing KW - NDT-toolbox PY - 2007 SN - 978-83-7125-161-0 SP - 93 EP - 104 PB - Dolnoslaskie Wydawnictwo Edukacyjne CY - Wroclaw, Poland AN - OPUS4-16092 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -