TY - CONF A1 - Helmerich, Rosemarie A1 - Kohlhoff, Harald A1 - Niemann, Joachim A1 - Werner, Klaus-Dieter T1 - Structural Condition Monitoring of a High Speed Train Crossing T2 - BRIDMO International Bridge Engineering School CY - Guimarães, Portugal DA - 2004-07-19 PY - 2004 AN - OPUS4-3820 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Helmerich, Rosemarie A1 - Feistkorn, S. A1 - Taffe, A. A1 - Wilsch, Gerd T1 - Reliability of NDE Data obtained from Concrete bridges N2 - Die Zuverlässigkeit von Daten, die mit zerstörungsfreien Prüfmethoden gewonnen werden sind von vielen Faktoren abhängig, z.B. dem Gerät, dem menschlichen Faktor, dem Materialeinfluss, dem Detail, dem Schadensteil aber auch von der Datenbearbeitung und -interpretation. Der Vortrag stellt den Stand der Möglichkeiten zur Quantifizierung von Ergebnissen der zerstörungsfreien Prüfung dar. N2 - The reliability of data, obtained from nondestructive testing depends on many different factors as e.g. the equipment, the human factor, the influence of material properties, geometrical accessibility of the given detail, the structure of the detail, but also from data acquisition, processing and interpretation. The presentation introduces to current possibilities for the quantification of measurement results received during nondestructive testing. T2 - Symposium on Jointless and Sustainable Bridges CY - Fuzhou, Fujian Province, China DA - 12.05.2016 KW - Probability of Detection KW - Nondestructive testing KW - Nondestructive evaluation KW - Reliability PY - 2016 AN - OPUS4-38081 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Täljsten, B. A1 - Carolin, A. A1 - Helmerich, Rosemarie ED - Jan Bien, ED - Lennart Elfgren, ED - Jan Olofsson, T1 - Rehabilitation of railway bridges KW - Railway bridges KW - Repair and strengthening KW - CFRP-strengthening KW - Non-destructive testing PY - 2007 SN - 978-83-7125-161-0 SP - 303 EP - 312 PB - Dolnoslaskie Wydawnictwo Edukacyjne CY - Wroclaw, Poland AN - OPUS4-16094 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Arndt, Ralf A1 - Helmerich, Rosemarie A1 - Maierhofer, Christiane A1 - Röllig, Mathias ED - Forde, M. T1 - Quantitative Pulse-Phase-Thermography for Composites and Concrete Structures N2 - The active approach for non-destructive-testing in Civil Engineering (NDT-CE) with infraredthermography (IR), developed at the Federal Institute for Materials Research and Testing (BAM), is described in part one of this contribution. The active IR-approach is based on the principles of impulse- (IT) and pulse-phase-thermography (PPT). The concept is a direct result of a research project at the BAM in cooperation with the Technical University of Berlin (TUB) and was funded by the Deutsche Forschungsgemeinschaft (DFG). In the second part results of the new thermography-scanning system (thermo-scanner) of BAM on debonding of multi-layered structures, especially carbon fibre reinforced plates (CFRP) on concrete are presented. Both, the thermo-scanner developed at BAM, and the investigations carried out, are part of the EU-Project Sustainable Bridges. In the third part of the paper the characteristic frequency of the optimum phase-contrast as a means for the characterization of defects’ depth in CE by means of PPT is introduced. A new quantitative approach is tested and discussed on concrete structures with defects of polystyrene and gas concrete. T2 - 11th International Conference and Exhibiton "Structural Faults and Repair - 2006" CY - Edinburgh, Scotland, UK DA - 2006-06-13 KW - Quantitative NDT KW - Impulse-thermography KW - Pulse-phase-thermography KW - Blind / characteristic frequency KW - Concrete KW - Thermo-scanner KW - CFRP-laminates KW - Debonding KW - Voids PY - 2006 SN - 0-947644-59-8 SP - 1(?) EP - 17(?) PB - Engineering Technics Pr., CY - Edingburgh AN - OPUS4-13794 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Maierhofer, Christiane A1 - Arndt, Ralf A1 - Röllig, Mathias A1 - Helmerich, Rosemarie A1 - Walther, A. A1 - Hillemeier, B. A1 - Rieck, C. T1 - Quantification of Voids and Elaminations in Real Concrete and Masonry Structures with Active Thermography: Case Studies T2 - 8th International Conference on Quantitative InfraRed Thermography (QIRT 2006) CY - Padova, Italy DA - 2006-06-28 KW - Non-destructive testing in civil engineering KW - Active thermography KW - Pulse-phase thermography KW - Plaster KW - Tiles KW - Asphalt KW - Numerical simulation PY - 2006 UR - http://qirt.gel.ulaval.ca/archives/qirt2006/papers/049.pdf SP - 49, 1 EP - 10 (?) CY - Padova, Italy AN - OPUS4-15710 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Helmerich, Rosemarie A1 - Röllig, Mathias A1 - Schultz, A. A1 - Vielhaber, J. ED - Jan Bien, ED - Lennart Elfgren, ED - Jan Olofsson, T1 - Quality assurance of CRFP-strengthened reinforced concrete structures using automated thermographic investigation KW - Quality assurance KW - Bridge repair and strengthening KW - Railway bridges KW - Non-destructive testing KW - Automated scanning PY - 2007 SN - 978-83-7125-161-0 SP - 321 EP - 330 PB - Dolnoslaskie Wydawnictwo Edukacyjne CY - Wroclaw, Poland AN - OPUS4-16091 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. A1 - Vielhaber, J. T1 - Quality assurance for CFRP-plate-strengthening of RC-beams using impulse-thermography T2 - Sustainable Bridges Workshop für Vertreter der Europäischen Infrastrukturabteilungen CY - Luleå, Sweden DA - 2007-03-27 PY - 2007 AN - OPUS4-14871 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Helmerich, Rosemarie A1 - Köpp, Christian A1 - Drdácký, M. A1 - Hennen, C. A1 - Lanza, L. A1 - Golez, M. A1 - Kolymbas, D. A1 - Herle, I. A1 - Virsta, A. A1 - Binda, L. ED - Mufti, A. ED - Banthia, N. T1 - Protection of cultural heritage against flood (CHEF) - A European research project T2 - CSHM-3 - Conservation of heritage structures: using FRM and SHM CY - Ottawa, Canada DA - 2010-08-11 KW - Cultural heritage KW - Flood KW - Preventive measures KW - Humidity measurements KW - Knowledge transfer KW - Case study PY - 2010 SN - 978-0-88865-883-8 SP - 361 EP - 370 CY - Vancouver, Canada AN - OPUS4-22352 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Helmerich, Rosemarie T1 - Practical applications of recent BAM-research results of NDT and monitoring in civil engineering N2 - Nondestructive testing and monitoring was of mayor interest in BAM-research related to the survey of civil engineering structures during the last two decades. Three case studies about research projects carried out at BAM were presented. All three projects focussed on the survey of parameters and safety related tasks in bridge engineering and inspection. First, the monitoring of the Berlin main station was presented with focus on the sensors developed specifically for this project. The second case study presented and application of guided ultrasonic waves to CFRP-strengthened bridges. The method was sucsessully applied to two of four different strengthening measures carried out min. 10 years ago. The last project presented the feasibility study of a network consisting of simple Bluetooth modules to survey changes in the moisture content in sand and massive concrete. T2 - Workshop CY - University of New South Wales, Sydney, Australia DA - 17.07.2018 KW - Monitoring KW - Wireless sensor network (WSN), KW - NDT KW - Guided waves KW - Bluetooth modules KW - Inspection KW - Civil infrastructure PY - 2018 AN - OPUS4-45657 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Helmerich, Rosemarie T1 - Opportunities and limitation of non-destructive testing in condition assessment of bridge structures T2 - Munich bridge assessment conference (MBAC 2009) CY - Munich, Germany DA - 2009-05-27 KW - Non-destructive testing KW - Condition assessment KW - Data fusion KW - Concrete bridges PY - 2009 SP - 1 EP - 13 AN - OPUS4-19597 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Helmerich, Rosemarie A1 - Hong, Shuxian ED - Miyamoto, A. ED - Hakola, I. ED - Yabe, A. ED - Emoto, H. T1 - Nondestructive evaluation and structural health monitoring T2 - CSHM-5 - 5th International workshop on civil structural health monitoring - Structural health monitoring and maintenance of short- & medium-span bridges CY - Ube, Yamaguchi, Japan DA - 2013-10-24 KW - Non-destructive testing KW - Requirements for NDE KW - Reinforced concrete bridges KW - Corrosion detection KW - Ground penetrating radar KW - Chloride contamination PY - 2013 IS - Keynote paper 4 SP - 49 EP - 56 AN - OPUS4-29510 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - RPRT A1 - Wiggenhauser, Herbert A1 - Helmerich, Rosemarie A1 - Krause, Martin A1 - Mielentz, Frank A1 - Niederleithinger, Ernst A1 - Taffe, Alexander A1 - Wilsch, Gerd ED - Naus, D. T1 - Non-destructive Testing of Nuclear Power Plant Concrete Structures State of the Art Report N2 - Nuclear Power Plants have been in operation for ca. 50 years. Based on this experience, non-destructive testing tasks specific to thick and highly reinforced nuclear containment structures have materialized. The performance based Service life extension of existing NPPs also needs a measurement based decision to support continuing the service of the concrete part of the installations. By nature, concrete is a very durable material and any natural Deterioration processes may take a long time to become critical to the structure. The experience of more than 50 years of service limits the testing tasks to a few ones which are not yet solved. Research in NDT of concrete structures is performed by many research institutions all over the world with different technical and systematic approaches. Results are mainly obtained on laboratory specimens, sometimes additional field studies are reported. This research takes place independently without coordination and as a result, the outcomes mostly lack full comparability. Software for data analysis has become indispensable and very powerful. This part of testing needs more attention when it comes to evaluate test results. Validation of NDE solutions is becoming a critical part in concrete structure testing. Validation is by definition the proof that a customer´s requirements in the test are being met by the testing solution. This includes equipment, personnel qualification and data analysis. In the following tables, the research recommendation Validation is used in the sense, that proof of the performance of existing solutions needs to be adressed. In general, a validation methodology for NDE solutions for concrete testing in itself needs to be researched and established. Comparability of research also needs an accepted and easily accessible reference. From experience, it is almost impossible to manufacture exact copies of test specimens at different locations. Round Robin tests are therefore needed to evaluate the performance of a test. Data evaluation is generally done using dedicated software, sometimes Hardware dependant and not interchangeable between systems. Software is ever more increasingly becoming more powerful and sophisticated. An in-depth evaluation needs to address the comparability and validation of Software used for data analysis and evaluation. The vision of a unified software pool for NDE investigations would undoubtedly support research tremendously. Quantitative NDE is mostly recommended to assess the condition of a structure. However, qualitative data can be very useful, especially for processes which change the material properties or deteriorate the structure (e.g. corrosion of reinforcement). The need for reliable baseline data is a key factor for such monitoring tasks. KW - Nuclear structures KW - Non-destructive testing KW - State of the art KW - Research needs PY - 2013 SP - 1 EP - 120 PB - BAM CY - Berlin AN - OPUS4-51049 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Helmerich, Rosemarie A1 - Wiggenhauser, Herbert T1 - Non-destructive testing of concrete structures T2 - 4th International Conference on Advances in Mechanical Engineering and Mechanics (ICAMEM2008) CY - Sousse, Tunisia DA - 2008-12-16 KW - Non-destructive testing KW - Civil engineering KW - Inspection KW - Knowledge transfer KW - Case study PY - 2008 SP - 1 EP - 10 AN - OPUS4-18655 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Helmerich, Rosemarie A1 - Niederleithinger, Ernst ED - Alexander, M. T1 - Non-destructive techniques for the condition assessment of railway bridges T2 - International Conference on Concrete Repair, Rehabilitation and Retrofitting (ICCRRR) CY - Cape Town, South Africa DA - 2005-11-21 KW - Sustainable bridges KW - Non-destructive Testing KW - Quality assurance KW - Repair PY - 2005 SN - 0-415-39654-9 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 - 163-165 / 429-435 (CD-ROM) PB - Taylor & Francis CY - London AN - OPUS4-11679 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Hong, Shuxian A1 - Helmerich, Rosemarie T1 - Non-destructive corrosion monitoring in concrete with ground penetrating radar N2 - In this research, laboratory experiments were carried out to investigate the feasibility of using ground penetrating radar (GPR) for corrosion detection and/or monitoring, and the mechanism of corrosion caused GPR signal changes, taking into account the influence of several parameters: Chloride, rebar size and cover depth. With the understanding of the mechanism, a novel method for detecting reinforcement corrosion in concrete with GPR is proposed, together with a series of signal processing toolkits for corrosion visualization and image comparison. T2 - SmartEN Marie Curie ITN Final Conference CY - Limassol, Cyprus DA - 09.10.2013 KW - Concrete KW - Reinforcement corrosion KW - Nondestructive testing KW - Ground penetration radar KW - Long term corrosion monitoring KW - Periodic monitoring PY - 2013 SP - 1 EP - 6 AN - OPUS4-29580 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. A1 - Vielhaber, J. A1 - Loehr, M. T1 - Non-destructive CFRP-bond evaluation T2 - 8th International Symposium on Fiber Reinforced Polymer Reinforcement for Concrete Structures (FRPRCS-8) CY - Patras, Greece DA - 2007-07-16 KW - Bond behaviour KW - Impulse thermography KW - Effectiveness of repair KW - CFRP-strengthening KW - Large scale testing KW - Validation KW - Acoustic emission KW - Combination of NDT-methods PY - 2007 SP - 106-107 (2-24) CY - Patras, Greece AN - OPUS4-15706 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Niederleithinger, Ernst A1 - Helmerich, Rosemarie A1 - Casas, J. ED - Jan Bien, ED - Lennart Elfgren, ED - Jan Olofsson, T1 - New methods for inspection and condition assessment KW - Brücken KW - Inspektion KW - Monitoring KW - Zerstörungsfreie Prüfung KW - Eisenbahn PY - 2007 SN - 978-83-7125-161-0 SP - 83 EP - 91 PB - Dolnoslaskie Wydawnictwo Edukacyjne CY - Wroclaw, Poland AN - OPUS4-16182 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Helmerich, Rosemarie A1 - Niederleithinger, Ernst A1 - Milmann, Boris A1 - Wöstmann, Jens A1 - Röllig, Mathias A1 - Feldmann, Rüdiger A1 - Täljsten, B. ED - Masoud Motavalli, T1 - Near surface mounted CFRP-rods - preparation of reinforcing measures and quality control by means of non-destructive testing T2 - 4th International Conference on FRP Composites in Civil Engineering (CICE2008) CY - Zurich, Switzerland DA - 2008-07-22 PY - 2008 SN - 978-3-905594-50-8 SP - 1 EP - 6 AN - OPUS4-17747 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Niederleithinger, Ernst A1 - Helmerich, Rosemarie A1 - Streicher, Doreen ED - Vincentsen, L. T1 - NDT Methods for Condition Assessment of Railway Bridges T2 - International Association for Bridge and Structural Engineering (IABSE) Conference on Operation, Maintenance and Rehabilitation of Large Infrastructure Projects, Bridges and Tunnels CY - Copenhagen, Denmark DA - 2006-05-15 KW - Condition assessment KW - Non-destructive testing KW - Automation KW - Method combination PY - 2006 SN - 87-91044-03-0 SP - 1(?) PB - IABSE CY - Zürich AN - OPUS4-14038 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Helmerich, Rosemarie A1 - Niederleithinger, Ernst A1 - Wiggenhauser, Herbert A1 - Krause, Martin A1 - Streicher, Doreen T1 - NDT Methods for condition assessment of railway bridges 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 - OPUS4-14346 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -