Acoustic signatures have been used in engineering to diagnose mechanical problems undetected by standard sensor measurements
Multiple studies demonstrate that acoustic signatures and acoustic emission signals can be leveraged through advanced machine learning frameworks to accurately diagnose mechanical problems and detect component faults.
The retrieved papers provide substantial empirical evidence supporting the claim that acoustic signatures (acoustic signals and acoustic emission) are effectively utilized in engineering for mechanical fault diagnosis, early defect detection, and condition monitoring of rotating machinery like bearings and gearboxes.
Xu C, Wang X, Huang J, Lu Y, Su H, Lu J. A multi-condition acoustic dataset of ball bearings for fault diagnosis.. 2026. https://doi.org/10.1016/j.dib.2026.112919
Presents an acoustic dataset for ball bearings covering various fault states, supporting the use of acoustic signatures for mechanical diagnosis.
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Özüpak Y, Aslan E, Zaitsev I. Explainable LSTM-AdamW based fault diagnosis of aircraft rotating components using airborne acoustic signals under dynamic operating conditions.. 2026. https://doi.org/10.1038/s41598-026-41889-2
Demonstrates that acoustic signals combined with deep learning enable early fault detection in rotating components under dynamic operating conditions.
Li J, Sheng H, Liu B, Liu X. Fault Diagnosis and Classification of Rolling Bearings Using ICEEMDAN-CNN-BiLSTM and Acoustic Emission.. 2026. https://doi.org/10.3390/s26020507
Shows that acoustic emission signals processed with advanced models successfully achieve fault diagnosis in rolling bearings.
Sánchez RV, Liu Y, Qin H, Cerrada M, Cabrera D, Carrasquero E, Medina R. Multi-scale entropy analysis of acoustic emission for gearbox fault severity classification.. 2026. https://doi.org/10.1038/s41598-026-37858-4
Proves that multi-scale entropy analysis of acoustic emission signals allows effective gearbox fault severity classification.
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