Burst-Type Acoustic Emission Source Localization Based on Multi-Scale and Multi-Sensors

Abstract:

For the burst-type acoustic emission signal, time delay estimation of two sensors calculated by signal cross-correlation is not accurate, and it leads the source localization results is not also accurate. A new method is proposed to improve accuracy of source localization results based on multi-scale analysis and multi-sensors. Acoustic emission signal multi-scale analysis using wavelet transform, then the most accurate time delay is selected in sub-band of signal multi-scale analysis by multi-sensors time delay vector close rule. Finally, the simulation acoustic emission source localization experiment has high accuracy.

• Periodical: Applied Mechanics and Materials (Volumes 380-384)
• Pages: 2954-2957
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.380-384.2954
• Online since: August 2013
• Authors: Xiao Tao Zhang, Li Wei Tang, Ping Wang, Xing Xing Han, Shi Jie Deng
• Keywords: Burst-Type Acoustic Emission Signal, Signal Absolute Value Cross-Correlation, source Localization, Time Delay

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