Rosli, M. H., Edwards, R. S. (Rachel S.), Dutton, B. (Ben), Johnson, C. G. (Colin G.) and Cattani, P. (2010) Identifying surface angled cracks on aluminium bar using EMATS and automated computer system. In: 36th Annual Review of Progress in Quantitative Nondestructive Evaluation, University of Rhode Island, Kingston, RI, Jul 26-31, 2009. Published in: AIP Conference Proceedings, Vol.1211 (No.1). pp. 1593-1600. ISBN 9780735407480. doi:10.1063/1.3362258 ISSN 0094-243X.

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Abstract

Electromagnetic acoustic transducers (EMATs) have been used to generate and detect Rayleigh waves in order to identify surface cracking in aluminium bars and rails. B-scans produced during scans of samples were used to determine the presence of surface defects. Additionally, the differences between signal enhancements due to wave interference at the crack produced by normal (900) and angled cracks in the B-scans were used to classify samples in order to decide an appropriate depth calibration curve for depth estimation. Classification was done using an image processing algorithm that selected the best features for classification, and used these to identify similar patterns in unclassified B-scans.

Item Type:	Conference Item (Paper)
Subjects:	Q Science > QC Physics T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH):	Rayleigh waves, Ultrasonic testing, Nondestructive testing, Electroacoustic transducers, Surfaces (Technology) -- Defects
Journal or Publication Title:	AIP Conference Proceedings
Publisher:	American Institute of Physics
ISBN:	9780735407480
ISSN:	0094-243X
Editor:	Thompson, DO and Chimenti, DE
Official Date:	22 February 2010
Dates:	Date Event 22 February 2010 Published
Volume:	Vol.1211
Number:	No.1
Number of Pages:	8
Page Range:	pp. 1593-1600
DOI:	10.1063/1.3362258
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Conference Paper Type:	Paper
Title of Event:	36th Annual Review of Progress in Quantitative Nondestructive Evaluation
Type of Event:	Conference
Location of Event:	University of Rhode Island, Kingston, RI
Date(s) of Event:	Jul 26-31, 2009

Data sourced from Thomson Reuters' Web of Knowledge

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