Determination of reliability in demining and NDT
- 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 modularThe 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.…
Autor*innen: | Christina Müller, Mstislav Elagin, Mate GaalORCiD, Martina Rosenthal, Uwe Ewert, Kurt Osterloh, P.-Th. Wilrich |
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Dokumenttyp: | Beitrag zu einem Sammelband |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | MATEST 2004 |
Jahr der Erstveröffentlichung: | 2004 |
Herausgeber (Institution): | Croatian Society of Non-Destructive Testing (CrSNDT) |
Erste Seite: | 183 |
Letzte Seite: | 201 |
Freie Schlagwörter: | Flaw Detection; Metal Detector Test Trials; Mine Detection; Prohability of Detection; Receiver Operating Characteristics |
Veranstaltung: | MATEST 2004 |
Veranstaltungsort: | Zagreb, Croatia |
Beginndatum der Veranstaltung: | 2004-10-14 |
Enddatum der Veranstaltung: | 2004-10-16 |
ISBN: | 953-96225-9-X |
Bemerkung: | Geburtsname von Rosenthal, Martina: Scharmach, M. - Birth name of Rosenthal, Martina: Scharmach, M. |
Verfügbarkeit des Dokuments: | Weder Datei noch physisches Exemplar vorhanden ("No Access") |
Datum der Freischaltung: | 19.02.2016 |
Referierte Publikation: | Nein |