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Acoustic Emission Source Characterisation in Large-Scale Composite Structures

Eaton, Mark Jonathan, Pullin, Rhys, Featherston, Carol Ann and Holford, Karen Margaret 2011. Acoustic Emission Source Characterisation in Large-Scale Composite Structures. Applied Mechanics and Materials 70 , pp. 381-386. 10.4028/www.scientific.net/AMM.70.381

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Abstract

Damage detection and location in aerospace composites is currently of great interest in the research community and is being driven by the need to reduce weight of commercial aircrafts and hence make substantial environmental improvements. The increased use of composites as safety critical components has led to the need for development of structural health monitoring (SHM) systems. Acoustic Emission (AE) offers an excellent potential for delivering the necessary information of damage detection to maintenance engineers in terms of location however there are currently no methodologies that can use AE signals to characterise damage sources. This paper explores a methodology for damage characterisation based on measuring the amplitude ratio (MAR) of the two primary plate wave modes, to allow identification of in-plane (matrix cracking) and out-of-plane sources (delamination). Results from a large-scale buckling test show good correlation between signal characterization and observed damage mechanisms.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Centre for Advanced Manufacturing Systems At Cardiff (CAMSAC)
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Uncontrolled Keywords: Acoustic Emission (AE), Composite Structure, Damage Characterisation, Damage Location
Publisher: Scientific.Net
ISSN: 1662-7482
Last Modified: 04 Feb 2018 01:46
URI: http://orca.cf.ac.uk/id/eprint/14361

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