An investigation of effective detection length of a localized micro-failure in a laminated thin composite plate using FBG sensor integrated AE system

Hafizi, Z. M. and Epaarachchi, J. and Lau, K. T. (2012) An investigation of effective detection length of a localized micro-failure in a laminated thin composite plate using FBG sensor integrated AE system. In: 8th Asian-Australasian Conference on Composite Materials (ACCM 2012): Composites: Enabling Tomorrow's Industry Today , 6-8 Nov 2012, Kuala Lumpur, Malaysia.

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Abstract

In recent years, there is a growing demand in developing FBG-AE system for Structural Health Monitoring (SHM) systems for fibre composite structures. The excellent static and dynamic strain measuring capabilities of Fibre Bragg Gratings (FBG) sensors are attributed to the major reason for replacing conventional Acoustic Emission (AE) sensor heads with FBG sensors. In addition, the physical size of FBG sensor provides greater access to embed them in composite structures without affecting mechanical properties of the composite significantly. This research work has investigated the direction dependency of the sensor and the effective length of the sensor from the source location for the use of FBG - AE systems in damage detection of thin composite plates. Besides, the sensitivity of embedded FBG sensor in composite laminates also investigated during this study. It has been seen that FBG sensor must be located at least 200 mm from the expected failure region in order to acquire optimal from AE sources. This study also successfully detected AE signals from FBG-AE system.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Copyright © 2012 Asian-Australasian Association for Composite Materials (AACM). All rights reserved. No parts of this document may be reproduced, stored in a retrieval system or transmitted in any form or by any means (electronic, mechanical, photocopying, recording or otherwise) without the permission of the copyright owner. Any request to reproduce any part of the proceedings should be directed to the publisher.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering
Date Deposited: 08 May 2013 02:13
Last Modified: 17 Oct 2014 01:20
Uncontrolled Keywords: acoustic emission; FBG sensors; GFRP structures; structural health monitoring
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
02 Physical Sciences > 0203 Classical Physics > 020301 Acoustics and Acoustical Devices; Waves
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
URI: http://eprints.usq.edu.au/id/eprint/22738

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