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Proceedings Paper

Study on the wavelet decomposed details of impact induced AE signals in composite laminates using fiber Bragg grating sensors
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Paper Abstract

Because of the higher attenuation of AE signal in composite materials, it is required to develop a damage assessment technique less affected by the signal intensity in order to use AE signals for damage detection. In this research, we investigated impact induced AE signals using FBG sensors on carbon epoxy composite panel. The frequency characteristics of impact AE signals were examined with wavelet decomposition focused on the leading wave. Consequently, we established a damage assessment technique using the sharing percentage of the wavelet detail components of AE signal, and conducted a low-velocity impact test on composite laminates to confirm the feasibility of the damage assessment method with FBG sensors.

Paper Details

Date Published: 1 April 2010
PDF: 9 pages
Proc. SPIE 7647, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010, 76473E (1 April 2010); doi: 10.1117/12.847522
Show Author Affiliations
Hyung-joon Bang, Korea Institute of Energy Research (Korea, Republic of)
Chun-gon Kim, Korea Advanced Institute of Science and Technology (Korea, Republic of)


Published in SPIE Proceedings Vol. 7647:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010
Masayoshi Tomizuka, Editor(s)

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