TY - GEN A1 - Müller, Christina A1 - Elagin, Mstislav A1 - Gaal, Mate A1 - Rosenthal, Martina A1 - Ewert, Uwe A1 - Osterloh, Kurt A1 - Wilrich, Peter-Th. T1 - Determination of reliability in demining and NDT N2 - The detection of defects in aircraft components or parts of a power plant or mines in the ground is connected with the task to distinguish between signals caused be the item searched for and noisy signals from other sources. The reliability of the system is the better the better the system is in detecting the wanted signal and avoiding false alarms caused by noise. It is usual to measure the reliability of diagnostic systems in terms of ROC-curves (Re-ceiver Operating Characteristics) and POD-curves (Probability of Detec-tion). The ROC curves describe the POD versus Probability of False Alarm with growing system sensitivity along the curve. POD curves describe the Probability of Detection for a fixed sensitivity for a variation of item sizes or depths. Reliability of the whole system is always a composition of the physics and technique, application influences and the human factors. For the scien-tific understanding and possibilities of improvement, decomposition accord-ing to a modular model is helpful. The authors present their experiences with the reliability evaluation of metal detectors for humanitarian demining and an NDT system of mechanized ultrasonic phased array testing of copper welds. The special concern in demining is the influence of soil types, detec-tors and the experiences of human beings. T2 - MATEST 2004 CY - Zagreb, Croatia DA - 2004-10-14 KW - Flaw Detection KW - Mine Detection KW - Prohability of Detection KW - Receiver Operating Characteristics KW - Metal Detector Test Trials PY - 2004 SN - 953-96225-9-X N1 - Geburtsname von Rosenthal, Martina: Scharmach, M. - Birth name of Rosenthal, Martina: Scharmach, M. SP - 183 EP - 201 AN - OPUS4-6047 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Christina A1 - Elagin, Mstislav A1 - Rosenthal, Martina A1 - Redmer, Bernhard A1 - Ewert, Uwe A1 - Schafer, Lloyd A1 - Wilrich, Peter-Th. T1 - Reliability Investigation of NDE Systems by Modular Analysis of Recorded Data N2 - During the second European-American Workshop on NDE Reliability, September 99 in Boulder, the term NDE reliability was defined as the degree that an NDT system is capable of achieving its purpose regarding detection, characterization and false calls. The most common – but also most expensive - way to determine this degree of capability in e.g. defect detection is to make just a performance demonstration using realistic test samples and to count the correct detections and false calls. For a more efficient way of reliability evaluation we propose to decompose the system into main modules e.g. according to the reliability formula set up on the first workshop: into f(IC) – a function of IC the intrinsic capability, determined by the physics and the technique of the NDE method representing an ideal upper bound of the reliability and g(AP) – a function of AP the industrial application factor like surface state or limited access to a component in general diminishing the ideal capability and finally h(HF) the function of the human factor which is in general also diminishing the ideal capability. The workshop proposed a rather plain mathematical shape for the formula R = f(IC) – g(AP) – h(HF) which should be considered merely as a “philosophical” expression but not as exact mathematical formula to be applied for evaluation of e.g. POD data. We propose to decompose the NDE system into modules in terms of functions of IC, AP and HF if appropriate or additional ones if necessary and then to analyze the mutual relationships of the terms via fault tree analysis. Finally the total reliability of the system is composed of the reliability of the subsystems via the rules of statistical systems theory. First trials for this approach of data analysis will be presented via examples from NDE systems in the aerospace industry. T2 - 8th ECNDT CY - Barcelona, Spain DA - 2002-06-17 PY - 2002 UR - http://www.ndt.net/article/ecndt02/428/428.htm N1 - Geburtsname von Rosenthal, Martina: Scharmach, M. - Birth name of Rosenthal, Martina: Scharmach, M. VL - 8 SP - 1(?) EP - 14(?) PB - European Federation for Non-Destructive Testing CY - Barcelona AN - OPUS4-2013 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Müller, Christina A1 - Elagin, Mstislav A1 - Bellon, Carsten A1 - Ewert, Uwe A1 - Zscherpel, Uwe A1 - Rosenthal, Martina A1 - Redmer, Bernhard A1 - Ryden, H. A1 - Ronneteg, U. ED - Proske, D. T1 - Probability-of-Detection-Evaluation of NDT Techniques for Cu-Canisters for Risk Assessment of Nuclear Waste Encapsulation T2 - 4th International Probabilistic Symposium CY - Berlin, Germany DA - 2006-10-12 KW - Zerstörungsfreie Prüfung KW - Zuverlässigkeit KW - POD KW - Endlagerung radioaktiver Abfälle PY - 2006 SN - 3-00-019232-8 N1 - Geburtsname von Rosenthal, Martina: Scharmach, M. - Birth name of Rosenthal, Martina: Scharmach, M. SP - 227 EP - 252 PB - Bundesanstalt für Materialforschung und -prüfung CY - Berlin AN - OPUS4-14418 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Christina A1 - Elagin, Mstislav A1 - Bellon, Carsten A1 - Ewert, Uwe A1 - Zscherpel, Uwe A1 - Rosenthal, Martina A1 - Redmer, Bernhard A1 - Ryden, H. A1 - Ronneteg, U. T1 - POD (Probability of Detection) Evaluation of NDT Techniques for Cu-Canisters for Risk Assessment of Nuclear Waste Encapsulation T2 - 9th European Conference on NDT CY - Berlin, Germany DA - 2006-09-25 KW - Zerstörungsfreie Prüfung KW - Zuverlässigkeit KW - POD KW - Endlagerung radioaktiver Abfälle PY - 2006 SN - 3-931381-86-2 N1 - Geburtsname von Rosenthal, Martina: Scharmach, M. - Birth name of Rosenthal, Martina: Scharmach, M. SP - 1(?) EP - 22(?) PB - European Federation for Non-Destructive Testing CY - Berlin AN - OPUS4-14419 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Müller, Christina A1 - Elagin, Mstislav A1 - Bellon, Carsten A1 - Ewert, Uwe A1 - Zscherpel, Uwe A1 - Rosenthal, Martina A1 - Redmer, Bernhard A1 - Ryden, H. A1 - Ronneteg, U. T1 - Reliability evaluation of NDT techniques for Cu-welds for risk assessment of nuclear waste encapsulation KW - Zerstörungsfreie Prüfung KW - Zuverlässigkeit KW - POD KW - Endlagerung radioaktiver Abfälle PY - 2006 SN - 0025-5300 N1 - Geburtsname von Rosenthal, Martina: Scharmach, M. - Birth name of Rosenthal, Martina: Scharmach, M. VL - 48 IS - 3 SP - 111 EP - 117 PB - Carl Hanser Verlag CY - München AN - OPUS4-14421 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Müller, Christina A1 - Elagin, Mstislav A1 - Bellon, Carsten A1 - Ewert, Uwe A1 - Zscherpel, Uwe A1 - Scharmach, M. A1 - Redmer, Bernhard A1 - Ryden, H. A1 - Ronneteg, U. ED - Bièth, M. ED - Whittle, J. T1 - POD (Probability of Detection) Evaluation of NDT Techniques for Cu-Canisters for Risk Assessment of Nuclear Waste Encapsulation T2 - 5th International Conference on NDE in Relation to Structural Integrity for Nuclear and Pressurised Components CY - San Diego, CA, USA DA - 2006-05-10 KW - Zerstörungsfreie Prüfung KW - Zuverlässigkeit KW - POD PY - 2007 SN - 978-92-79-06107-3 SN - 1018-5593 N1 - Serientitel: JRC Scientific and Technical Reports – Series title: JRC Scientific and Technical Reports IS - Paper 1005 SP - 274 EP - 295 PB - Office for Official Publications of the European Communities CY - Luxembourg AN - OPUS4-15887 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -