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Simulation-Based Investigation of a Probability of Detection (POD) Model Using Phased Array Ultrasonic Testing (PAUT) Technique
Department of Industrial and Materials Science (IMS), Chalmers University of Technology, 41296, Göteborg (SWE).
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. (PTW)ORCID iD: 0000-0002-4274-1144
GKN Aerospace Sweden AB, Flygmotorvägen 1, 46181, Trollhättan (THN).
2022 (English)In: Journal of nondestructive evaluation, ISSN 0195-9298, E-ISSN 1573-4862, Vol. 41, no 2, article id 40Article in journal (Refereed) Published
Abstract [en]

Probability of detection (POD) as a metric for quantifying the capability of inspection procedures in nondestructive evaluation (NDE), has been applied and evolved in industries since 1970s. Progress had been noted when certain statistical functions were brought up to model POD behavior, including log-normal model (also referred as Probit model). This model had been concluded to be the best fit and therefore has been widely used in many studies, while the involved assumptions and conditions were not carefully addressed and explored. To make flexible POD datasets available for specific inspection procedures and reduce the number of expensive experiments needed, model-assisted POD (MAPOD) is an alternative. This paper addresses a pure simulation-based POD procedure of an inspection scenario involving phased array ultrasonic testing (PAUT) on lack-of-fusion defects in additive manufactured (AM) components. The mathematical simulations are performed by an ultrasonic testing (UT) simulation software, simSUNDT, developed at Chalmers University of Technology in Sweden. Resulted inspection datasets with the proposed data processing steps are evaluated in terms of the assumptions and conditions of log-normal POD model, with the purpose of discussing the POD model validity under different circumstances. Simulation-based POD curves are finally compared with several discrete POD values at some defect sizes, calculated through massive computations from physics-model based metamodel. Comparisons and observations confirm satisfactory application of log-normal POD model despite some violations in model hypotheses.

Place, publisher, year, edition, pages
Springer Nature, 2022. Vol. 41, no 2, article id 40
Keywords [en]
Nondestructive evaluation (NDE); Phased array ultrasonic testing (PAUT); MAPOD; Numerical simulation; simSUNDT
National Category
Other Materials Engineering
Research subject
Production Technology
Identifiers
URN: urn:nbn:se:hv:diva-18385DOI: 10.1007/s10921-022-00873-2ISI: 000788597500001Scopus ID: 2-s2.0-85128881042OAI: oai:DiVA.org:hv-18385DiVA, id: diva2:1699456
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Chalmers University of TechnologyAvailable from: 2022-09-28 Created: 2022-09-28 Last updated: 2022-09-28

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Wirdelius, Håkan

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