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Reliability considerations of NDT by probability of detection (POD) determination using ultrasound phased array

 
: Kurz, J.H.; Jüngert, A.; Dugan, S.; Dobmann, G.; Boller, C.

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Postprint urn:nbn:de:0011-n-2546712 (281 KByte PDF)
MD5 Fingerprint: 961e251ec071e7b4185966d6bc07d259
Created on: 22.8.2014


Engineering failure analysis 35 (2013), pp.609-617
ISSN: 1350-6307
Bundesministerium für Wirtschaft und Technologie BMWi
1501386
Einbeziehung der Aussagefähigkeit zerstörungfreier Prüfungen in probabilistischen Versagensanalysen
English
Journal Article, Electronic Publication
Fraunhofer IZFP ()
Probability of Detection (POD); ultrasound phased array; ultrasound sampling phased array; cracks; quantitative NDT

Abstract
Reliable assessment procedures are an important aspect of maintenance concepts. Non-destructive testing (NDT) methods are an essential part of a variety of maintenance plans. Reliability aspects of NDT methods are of importance if quantitative information is required. Different design concepts e.g. the damage tolerance approach in aerospace already include reliability criteria of NDT methods. NDT is also an essential part during construction and maintenance of nuclear power plants. This paper will show the results of a research project designed for POD determination of ultrasound phased array inspections of real cracks. The continuative objective of this project is to generate quantitative POD results and to integrate these results in a probabilistic damage assessment concept. The distribution of the crack sizes of the specimens and the designed inspection instruction will be discussed, and results of the ultrasound inspections will be presented. Furthermore, additional considerations for POD determination of phased array inspections of real cracks will be discussed. In the context of the results, the remaining uncertainty of the inspections has to be taken into consideration for failure analysis.

: http://publica.fraunhofer.de/documents/N-254671.html