Paper Title:
AE Signal Analysis of Carbon Fiber Reinforced Composites Based on Hilbert-Huang Transform
  Abstract

The AE signals of fiber reinforced composites in the tensile testing were processed by Hilbert-Huang transform. The AE signals were well recognized from the Hilbert-Huang spectrum. The experimental results show that the frequency range of matrix crack AE signals is below 200 kHz and the main frequency is nearly in 175 kHz. The frequency range of fiber breakage is above 200 kHz and the main frequency is nearly 250 kHz. While the frequency of delaminations is distributed all over the frequency range and the energy is distributed below 200 kHz. The experimental results also indicted that the intrinsic mode function (IMF) components of the AE signals processed by empirical mode decomposition (EMD) can reconstruct the original signals well, and the Hilbert spectrum of the IMF components can reveal the frequency and energy trends of AE signals.

  Info
Periodical
Advanced Materials Research (Volumes 301-303)
Chapter
Chapter 1: Material Science and Technology
Edited by
Riza Esa and Yanwen Wu
Pages
447-451
DOI
10.4028/www.scientific.net/AMR.301-303.447
Citation
C. Lu, P. Ding, Z. H. Chen, "AE Signal Analysis of Carbon Fiber Reinforced Composites Based on Hilbert-Huang Transform", Advanced Materials Research, Vols. 301-303, pp. 447-451, 2011
Online since
July 2011
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Price
$32.00
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