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Reconstruction of Reflector Images at the Boundary of the Base and Deposited Metal Using Plane Wave Imaging Technique

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Abstract

It is proposed to use plane wave imaging (PWI) technique for ultrasonic inspection of welded joints with narrow groove preparation to detect cracks at the fusion interface of the base and deposited metal. In comparison with the digital image focusing (DFA) method, this method allows one to reconstruct images of reflectors with a higher signal-to-noise ratio and a higher speed of both echo recording and image reconstruction of discontinuities according to various acoustic schemes taking into account the wave type transformation upon reflection from test object boundaries. Numerical and model experiments have confirmed the effectiveness of using PWI technology to increase the speed of zonal testing. The use of a coherence factor increased the signal-to-noise ratio of the crack model images for both FMC and PWI modes.

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Correspondence to E. G. Bazulin.

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Bazulin, E.G. Reconstruction of Reflector Images at the Boundary of the Base and Deposited Metal Using Plane Wave Imaging Technique. Russ J Nondestruct Test 59, 129–140 (2023). https://doi.org/10.1134/S1061830923700237

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  • DOI: https://doi.org/10.1134/S1061830923700237

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