Detecting delamination in a composite structure using an embedded FBG-AE hybrid system

Kahandawa, G. C. and Hafizi, Z. M. and Epaarachchi, J. and Lau, K. T. (2012) Detecting delamination in a composite structure using an embedded FBG-AE hybrid system. In: 7th Australasian Congress on Applied Mechanics (ACAM 2012), 9-12 Dec 2012, Adelaide, Australia.

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Abstract

Distorted spectra of Fibre Bragg Gratings (FBG) sensors have been using in most of research on identifying delaminations in composites which is the most common cause of failures of laminated composite structures. However, it has been shown that there are multiple causes which can produce a similar response spectrum of an FBG sensor. As a consequence an integrated additional monitoring system would enhance the prediction power of FBG based monitoring system. In this research paper we introduce a 'FBG-AE hybrid system' concept for the detection of delaminations in composite structures which uses same FBG sensor network for monitor damage using two independent responses from the sensors. The proposed system use spectral responses from FBG sensors and extract strain and acoustic emission data for monitoring purpose. The proposed concept has experimentally investigated with convincing results.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to published version due to publisher copyright policy.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering
Date Deposited: 15 May 2013 03:46
Last Modified: 04 Dec 2014 03:43
Uncontrolled Keywords: acoustic emission; FBG sensors; FRP structures; structural health monitoring
Fields of Research : 02 Physical Sciences > 0205 Optical Physics > 020504 Photonics, Optoelectronics and Optical Communications
09 Engineering > 0901 Aerospace Engineering > 090103 Aerospace Structures
09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
URI: http://eprints.usq.edu.au/id/eprint/22679

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