An investigation of acoustic emission signal attenuation for monitoring of progressive failure in fiberglass reinforced composite laminates

Hafizi, Z. M. and Epaarachchi, J. and Lau, K. T. (2013) An investigation of acoustic emission signal attenuation for monitoring of progressive failure in fiberglass reinforced composite laminates. International Journal of Automotive and Mechanical Engineering, 8 (1). pp. 1442-1456. ISSN 2229-8649

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Abstract

Glass fiber reinforced polymer (GFRP) laminates have a high damping characteristic which can retard ultra-high frequency guided wave signals from propagating along the plate. Owing to this, the identification of an effective area for sensor location is essential. Appropriate signal processing, including wavelet analysis was done, in order to observe the details of an acoustic emission (AE) signal which was emitted at a distance from it source. This study reveals that it is necessary to consider the near field and far field effects of AE signal attenuation, in particular, to determine a composite's micro failure characterization. Consequently, this attenuation behavior was used to develop the non-velocity based source mapping to monitor the progressive failure in composite laminates. This paper details the outcomes of the signal energy attenuation method with an improved algorithm for progressive failure monitoring in fiberglass reinforced composite laminates and the 'effective length' for better AE detection.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2013 Universiti Malaysia Pahang. Open access
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 20 Jun 2014 04:35
Last Modified: 17 Oct 2014 05:54
Uncontrolled Keywords: acoustic emission; GFRP composite; SHM; signal attenuation; wavelet analysi
Fields of Research : 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 > 091301 Acoustics and Noise Control (excl. Architectural Acoustics)
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: doi:10.15282/ijame.8.2013.31.0119
URI: http://eprints.usq.edu.au/id/eprint/25331

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