Abstract
A method is considered for determining the distance between two wedges and the speed of longitudinal ultrasonic waves in a test object when measuring the profile of the surface of pipelines under the bead of a weld. The method makes it possible to reduce the error in determining the profile of the bottom of a pipeline in the course of testing by refining the distance between the wedges and the speed of sound using head-wave pulses. Results of numerical experiments are provided for the processing of echo signals calculated by the finite-difference method in the time domain. The efficiency of the proposed technique is demonstrated with some model experiments.
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Original Russian Text © A.E. Bazulin, E.G. Bazulin, V.V. Pronin, 2017, published in Defektoskopiya, 2017, No. 9, pp. 10–20.
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Bazulin, A.E., Bazulin, E.G. & Pronin, V.V. Determining the distance between antenna arrays and the speed of longitudinal waves in a test object when reconstructing the profile image of the bottom of a weld in ultrasonic testing. Russ J Nondestruct Test 53, 604–614 (2017). https://doi.org/10.1134/S1061830917090029
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DOI: https://doi.org/10.1134/S1061830917090029