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Ultrasonic inspection of austenitic welded joints: analysis of methods and recommendations for improving reliability

Nikolay P. Aleshin, N.N. Vadkovskii, N. N. Volkova

Abstract

The current methods of ultrasonic inspection of austenitic welded joints are analyzed. It is shown that as a result of the presence of the transcrystalline structure in the metals, they are characterized by the anisotropy of the acoustic properties which also results in a high level of structural noise and rapid attenuation and anomalous propagation of ultrasound. Recommendations are given for the selection of the parameters, transducers, and ultrasonic inspection procedures.

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Available abstract

Key concepts: Ultrasonic sensor, Welding, Ultrasonic testing, Materials science, Reliability (semiconductor), Acoustics, Anisotropy, Austenite