Abstract
The article is devoted to ultrasonic testing of weld joints in aerospace industry with an acoustic phased array. Testing planar flaws of lack-of-fusion and joint-root-crack types by sector scanning is considered. A technique is suggested for calculating the probability of detecting flaws (POD) by means of numerical modeling of the ultrasonic-testing procedure with allowance for interferences. A finite-element model has been developed, and 40 cracks with randomly generated geometry have been modeled. Using the modeling results, a conditional crack height at a level of 10% of the echosignal amplitude from a reference reflector has been determined. POD curves have been calculated using the results of numerical experiments.
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Original Russian Text © S.O. Pilyugin, V.P. Lunin, 2016, published in Defektoskopiya, 2016, No. 6, pp. 35–41.
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Pilyugin, S.O., Lunin, V.P. Determining the probability of detecting flaws in weld joints by phased-array ultrasonic testing. Russ J Nondestruct Test 52, 332–338 (2016). https://doi.org/10.1134/S1061830916060085
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DOI: https://doi.org/10.1134/S1061830916060085