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Towards improved damage location using acoustic emission

Eaton, Mark Jonathan, Pullin, Rhys and Holford, Karen Margaret 2012. Towards improved damage location using acoustic emission. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 226 (9) , pp. 2141-2153. 10.1177/0954406212449582

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Abstract

The acoustic emission technique is a passive non-destructive testing technique that has significant potential for use as a structural health monitoring technique for many large-scale structures, allowing continuous global monitoring. The location capability of the acoustic emission technique is its most beneficial attribute; however, the location accuracy can often be limited in complex materials and structures. This article discusses recent advances in the location of acoustic emission signals. The key sources of errors are identified as signal arrival time measurement and processing algorithm limitations. A series of strategies for reducing the effects of both causes of error are presented. Additionally, the results of a case study are used to demonstrate a novel mapping technique for acoustic emission source location of fatigue crack signals in an aircraft landing gear component. Improvements in location accuracy of up to 87.5% were observed when compared with standard location calculation algorithms.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Centre for Advanced Manufacturing Systems At Cardiff (CAMSAC)
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Uncontrolled Keywords: Acoustic emission; source location; structural health monitoring; damage detection
Publisher: SAGE Publications
ISSN: 0954-4062
Last Modified: 10 Apr 2019 21:41
URI: http://orca.cf.ac.uk/id/eprint/38341

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