Identification of Damage Modes in Twill-Weave Composite Based on EMD of AE Event

Abstract:

Acoustic emission (AE) monitoring is the primary technology used for the identification of different types of failure in 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 Fast Fourier Transform (FFT) of each IMF component was performed, it was shown that the event peak frequency of each IMF component could be directly related to the materials damage modes.

• Periodical: Applied Mechanics and Materials (Volumes 198-199)
• Pages: 60-63
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.198-199.60
• Online since: September 2012
• Authors: Wen Qin Han, Jin Yu Zhou
• Keywords: Acoustic Emission (AE), Empirical Mode Decomposition (EMD), Peak Frequency, Twill-Weave Composite

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