Article Dans Une Revue Sensors and Actuators A: Physical Année : 2025

Non-destructive evaluation (NDE) via Acoustic Emission (AE) simulation: Response and modelling of AE transmitting sensor

Résumé

Acoustic Emission (AE) method is a monitoring technique that detects transient elastic waves generated by therapid release of energy from localised sources within materials. It is widely used for non-destructive evaluationand health monitoring of structures. However, interpreting AE signals is challenging, requiring a comprehensiveunderstanding of the AE measurement chain, including excitation sources, propagation mediums, sensors andtheir coupling conditions, acquisition systems and signal processing. To address these challenges, a combinationof simulation and experimental approaches is essential. In this study, the modelling of the AE measurementchain, with particular emphasis on excitation sources, was developed by using highly reliable and reproducibleemission waves from piezoelectric sensors. To achieve this, the velocity response across the entire active surfaceof typical AE sensors (R3α, R6α, R15α, and F15α, from Physical Acoustics, USA) was first identified experi-mentally, using a laser vibrometer. Then, 3D models incorporating these AE sources were established throughboth experiment and simulation, with a configuration using a metallic plate, to study the wave propagation andthe influence of the AE measurement chain. Several parameters were studied, including the relationship betweenthe sensor’s response and excitation pulse characteristics, aperture effect of AE sensors, and main parameters ofAE signals. The results demonstrated a very good agreement in both signal waveform and key characteristicsbetween simulations and experiments obtained using a laser vibrometer. These findings are essential for un-derstanding sensor characteristics, controlling artificial source generation, performing AE sensor calibrationtests, and advancing models for the entire AE measurement chain.

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Dates et versions

hal-05109149 , version 1 (12-06-2025)

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Van-Duong Le, Marianne Perrin, Luis Espinosa, Marie-Laetitia Pastor, Yannick Le Maoult. Non-destructive evaluation (NDE) via Acoustic Emission (AE) simulation: Response and modelling of AE transmitting sensor. Sensors and Actuators A: Physical , 2025, 393, pp.116781. ⟨10.1016/j.sna.2025.116781⟩. ⟨hal-05109149⟩
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