Sensors 2011, 11(1), 599-611; doi:10.3390/s110100599
Article

Study and Application of Acoustic Emission Testing in Fault Diagnosis of Low-Speed Heavy-Duty Gears

1email, 1, 1, 2,* email, 3email and 4
Received: 21 December 2010; in revised form: 31 December 2010 / Accepted: 31 December 2010 / Published: 10 January 2011
(This article belongs to the Section Physical Sensors)
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Abstract: Most present studies on the acoustic emission signals of rotating machinery are experiment-oriented, while few of them involve on-spot applications. In this study, a method of redundant second generation wavelet transform based on the principle of interpolated subdivision was developed. With this method, subdivision was not needed during the decomposition. The lengths of approximation signals and detail signals were the same as those of original ones, so the data volume was twice that of original signals; besides, the data redundancy characteristic also guaranteed the excellent analysis effect of the method. The analysis of the acoustic emission data from the faults of on-spot low-speed heavy-duty gears validated the redundant second generation wavelet transform in the processing and denoising of acoustic emission signals. Furthermore, the analysis illustrated that the acoustic emission testing could be used in the fault diagnosis of on-spot low-speed heavy-duty gears and could be a significant supplement to vibration testing diagnosis.
Keywords: acoustic emission; low-speed and heavy-duty; gear fault diagnosis; redundant second generation wavelet
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MDPI and ACS Style

Gao, L.; Zai, F.; Su, S.; Wang, H.; Chen, P.; Liu, L. Study and Application of Acoustic Emission Testing in Fault Diagnosis of Low-Speed Heavy-Duty Gears. Sensors 2011, 11, 599-611.

AMA Style

Gao L, Zai F, Su S, Wang H, Chen P, Liu L. Study and Application of Acoustic Emission Testing in Fault Diagnosis of Low-Speed Heavy-Duty Gears. Sensors. 2011; 11(1):599-611.

Chicago/Turabian Style

Gao, Lixin; Zai, Fenlou; Su, Shanbin; Wang, Huaqing; Chen, Peng; Liu, Limei. 2011. "Study and Application of Acoustic Emission Testing in Fault Diagnosis of Low-Speed Heavy-Duty Gears." Sensors 11, no. 1: 599-611.


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