Modal acoustic emission investigation for progressive failure monitoring in thin composite plates under tensile test

Hafizi, Mohd Zohari and Epaarachchi, Jayantha Ananda and Lau, K. T. (2013) Modal acoustic emission investigation for progressive failure monitoring in thin composite plates under tensile test. Structural Health Monitoring: Research and Applications, 558 (558). pp. 65-75. ISSN 1013-9826

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Abstract

Acoustic Emission (AE) is one of the popular non-destructive (NDT) techniques and its applications have increased subsequently for Structural Health Monitoring (SHM). During the past few decades, many successful research works have evidently shown remarkable capability of AE for early damage detection of composite materials. This paper investigated the application of single channel acoustic emission (AE) source location detection method, utilizing time-frequency analysis for thin composite plates. Besides, failure characterization using Modal Acoustic Emission (MAE) also presented. Modal analysis of AE signals or MAE can offers a better theoretical background for acoustic emission analysis; which is necessary to get more qualitative and quantitative result and therefore, increase the reliability of early failure characterization for thin composite plates. For this study, tensile tests were conducted on the glass fiber epoxy resin specimen with small notch; and four channels of acoustic emission system were used to acquire AE signals. The results revealed that in practical, single channel AE source location was difficult to be done. Also, the study has successfully showed that matrix cracks and fiber fracture produced AE signals which dominated by symmetric wave mode.

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Item Type:	Article (Commonwealth Reporting Category C)
Refereed:	Yes
Item Status:	Live Archive
Additional Information:	© (2013) Trans Tech Publications, Switzerland. No part of contents of this paper may be reproduced or transmitted in any form or by any means without the written permission of TTP, www.ttp.net. (ID: 139.86.2.15-01/05/13,06:14:32)
Faculty / Department / School:	Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering
Date Deposited:	21 May 2013 01:27
Last Modified:	12 Sep 2014 02:13
Uncontrolled Keywords:	modal acoustic emission; location detection; glass fiber reinforced composites
Fields of Research :	09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering 09 Engineering > 0906 Electrical and Electronic Engineering > 090609 Signal Processing 09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials 09 Engineering > 0913 Mechanical Engineering > 091304 Dynamics, Vibration and Vibration Control
Socio-Economic Objective:	E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI:	10.4028/www.scientific.net/KEM.558.65
URI:	http://eprints.usq.edu.au/id/eprint/22740

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