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Experimental Study of Diffraction of Elastic Waves on Crack Model

  • ACOUSTIC METHODS
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Russian Journal of Nondestructive Testing Aims and scope Submit manuscript

Abstract

Small-opening slots have been used to simulate cracks in butt welds. The influence of the orientation of the slot ribs on their detectability with pulse echo and diffraction methods of ultrasonic testing has been studied. It is shown that the processes occurring during the scattering of elastic waves on cracks should be modeled by a three-dimensional problem. However, theoretical analytical and numerical studies in this area most often concern two-dimensional problems of diffraction of elastic waves, where the target edge under study is located on the acoustic axis of the ultrasound source and/or receiver and is oriented perpendicular to the incident beam. The article presents experimental results illustrating the influence of the orientation of the edge (rib) in three-dimensional problems on the received signals both when using diffraction schemes of the TOFD type, and in classical ultrasonic testing by the pulse echo method according to the “tandem” scheme and with the transducers turned according to the “duet” scheme.

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ACKNOWLEDGMENTS

The team of authors would like to thank Ph.D. L.Yu. Mogilner for assistance in setting up experiments.

Funding

This work was carried out within the framework of the state task no. 075-0148-20-00 of December 20, 2019.

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Authors and Affiliations

  1. Research and Training Center “Welding and Testing,” Bauman Moscow State Technical University, 105005, Moscow, Russia

    N. P. Aleshin, N. V. Krysko, D. M. Kozlov & A. G. Kusyy

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  1. N. P. Aleshin
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  2. N. V. Krysko
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  3. D. M. Kozlov
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  4. A. G. Kusyy
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Corresponding authors

Correspondence to N. P. Aleshin, N. V. Krysko, D. M. Kozlov or A. G. Kusyy.

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Aleshin, N.P., Krysko, N.V., Kozlov, D.M. et al. Experimental Study of Diffraction of Elastic Waves on Crack Model. Russ J Nondestruct Test 57, 13–20 (2021). https://doi.org/10.1134/S1061830921010022

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  • DOI: https://doi.org/10.1134/S1061830921010022

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