Study on Failure Mechanisms of Composite Materials Based on HHT

Abstract:

In order to get a deep understanding of composite failure mechanisms, the new advanced signal processing methodologies are established for the analysis of acoustic emission (AE) data obtained from the quasi-static tension test of composite materials. Tensile test were carried out on twill-weave composite specimens, and acoustic emissions were recorded from these tests. AE signals were decomposed into a set of Intrinsic Mode Functions (IMF) components by means of Empirical Mode Decomposition (EMD) , the Hilbert-Huang Transform (HHT) of each IMF component was performed, it was shown that the frequency distribution of IMF component in time-scale could be directly related to composite materials failure mechanisms.

• Periodical: Applied Mechanics and Materials (Volumes 477-478)
• Pages: 30-33
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.477-478.30
• Online since: December 2013
• Authors: Wen Qin Han, Jin Yu Zhou
• Keywords: Acoustic Emission (AE), Empirical Mode Decomposition (EMD), Failure Mechanism, Twill-Weave Composite

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