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DOI: 10.14489/td.2026.05.pp.085-094
Lepsheev E. A., Barat V. A., Elizarov S. V. INVESTIGATION OF ACOUSTIC EMISSION SIGNALS PROPAGATION FEATURES BY THE LAYERWISE METHOD (pp. 85-94)
Abstract. The primary inspection objects for the acoustic emission (AE) method are thin-walled structures such as pipelines, pressure vessels, and storage tanks. The dominant type of AE waves propagating in thin-walled structures are Lamb waves. Owing to the characteristics of Lamb wave propagation, including dispersive behavior and frequency-dependent attenuation, the waveform and spectral content of AE signals strongly depend on the propagation distance along the waveguide. This significantly complicates the interpretation of AE data, since the influence of the acoustic transmission path masks the effect of the source function and hinders reliable identification of the damage mechanism in the inspected structure. In this work, the combined influence of source parameters and acoustic transmission path parameters on the AE signal waveform is investigated. The study is carried out using a semi-analytical modeling procedure for AE signals with various source and waveguide parameters.
Keywords: acoustic emission, Lamb waves, far-field signals, correlation.
E. A. Lepsheev, V. A. Barat (“Interunis-IT” LLC, Moscow, Russia, National Research University “MPEI”, Мoscow, Russia) E-mail:
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S. V. Elizarov (“Interunis-IT” LLC, Moscow, Russia, National Research University “MPEI”, Мoscow, Russia) E-mail:
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