AE Signal Analysis of Carbon Fiber Reinforced Composites Based on Hilbert-Huang Transform

Abstract:

Article Preview

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)

Edited by:

Riza Esa and Yanwen Wu

Pages:

447-451

DOI:

10.4028/www.scientific.net/AMR.301-303.447

Citation:

C. Lu et al., "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

Export:

Price:

$35.00

In order to see related information, you need to Login.

In order to see related information, you need to Login.