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Studying Detectability of Plane Surface Defects by Ultrasonic Method Using Rayleigh Waves

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Abstract

The problems of detecting operational plane surface defects by the ultrasonic method of nondestructive testing with the use of Rayleigh surface waves generated by an electromagnetic-acoustic transducer are considered. The paper presents an experimental study of the detection of plane defects simulated by an artificial reflector of the “groove” type with different opening, depth, and angle of slope. The dependences of the signal amplitude on the listed parameters are constructed and their nature is evaluated. The optimal amplitude models for constructing the curves of the probability of detection of defects (PoD) have been determined. A conclusion is made about the minimum dimensions of a plane defect of the operational type detected by the considered method with a probability of 90% taking into account the confidence interval of 95%.

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Correspondence to N. P. Aleshin, N. V. Krysko, S. V. Skrynnikov or A. G. Kusyy.

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Aleshin, N.P., Krysko, N.V., Skrynnikov, S.V. et al. Studying Detectability of Plane Surface Defects by Ultrasonic Method Using Rayleigh Waves. Russ J Nondestruct Test 57, 446–454 (2021). https://doi.org/10.1134/S1061830921060036

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  • DOI: https://doi.org/10.1134/S1061830921060036

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