Acoustic emission source linear localization based on an ultra-short FBGs sensing system

Zhongwei Jin; Mingshun Jiang; Qingmei Sui; Faye Zhang; Lei Jia

doi:10.1117/12.2033315

15 October 2013 Acoustic emission source linear localization based on an ultra-short FBGs sensing system

Zhongwei Jin, Mingshun Jiang, Qingmei Sui, Faye Zhang, Lei Jia

Proceedings Volume 8924, Fourth Asia Pacific Optical Sensors Conference; 89241F (2013) https://doi.org/10.1117/12.2033315
Event: Asia Pacific Optical Sensors Conference 2013, 2013, Wuhan, China

Abstract

An acoustic emission (AE) linear location system is proposed, which employs fiber Bragg gratings (FBGs) as AE sensors. It is demonstrated that the FBG wavelength can be modulated as static case when the grating length is much shorter than the AE wavelength. In addition, an improved AE location method based on Gabor wavelet transform (WT) and threshold analysis is represented. The method is testified through AE linear location experiments based on a tunable narrow-band laser interrogation system using ultra-short FBG sensors as AE sensors. Results of the experiments show that 86% of the linear location errors are less than 10mm.

Citation Download Citation

Zhongwei Jin, Mingshun Jiang, Qingmei Sui, Faye Zhang, and Lei Jia "Acoustic emission source linear localization based on an ultra-short FBGs sensing system", Proc. SPIE 8924, Fourth Asia Pacific Optical Sensors Conference, 89241F (15 October 2013); https://doi.org/10.1117/12.2033315

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