标题：Acoustic emission source linear localization based on an ultra-short FBGs sensing system
作者：Jin, Zhongwei ;Jiang, Mingshun ;Sui, Qingmei ;Zhang, Faye ;Jia, Lei
作者机构：[Jin, Zhongwei ;Jiang, Mingshun ;Sui, Qingmei ;Zhang, Faye ;Jia, Lei ] School of Control Science and Engineering, Shandong University, Jinan 250061, C 更多
关键词：Acoustic emission (AE) linear location; fiber Bragg gratings (FBGs); Gabor wavelet transform (WT); threshold analysis
摘要：An acoustic emission (AE) linear location system was proposed, which employed fiber Bragg gratings (FBGs) as AE sensors. It was demonstrated that the FBG wavelength could be modulated as the static case when the grating length was much shorter than the AE wavelength. In addition, an improved AE location method based on the Gabor wavelet transform (WT) and threshold analysis was represented. The method was 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 showed that 86% of the linear location errors were less than 10 mm. © 2014 The Author(s).