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Defect feature extraction using surface wave interactions and time-frequency behavior

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Dutton, B. (Ben), Rosli, M. H. and Edwards, R. S. (Rachel S.) (2010) Defect feature extraction using surface wave interactions and time-frequency behavior. 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. 647-654.

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Official URL: http://dx.doi.org/10.1063/1.3362455

Abstract

In this paper we exploit the interaction of ultrasonic surface waves with surface cracks in order to extract defect characteristics. An experimentally validated computer model was developed to simulate laser generated surface waves interacting with defects of several depths and angles. The Rayleigh reflection coefficient vs. crack angle and depth was explored. Amplitude and frequency behaviour at the defect interface in aluminium samples was also considered. Additionally, the phase component of the FFT was used to extract similar information. Finally, we explore the time-frequency behaviour using the Wigner transform.

Item Type:

Conference Item (Paper)

Subjects:

Q Science > QC Physics
T Technology > TA Engineering (General). Civil engineering (General)

Divisions:

Faculty of Science > Physics

Library of Congress Subject Headings (LCSH):

Ultrasonic testing, Rayleigh waves, Nondestructive testing, Surface waves, 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:

Page Range:

pp. 647-654

Identification Number:

10.1063/1.3362455

Status:

Peer Reviewed

Publication Status:

Published

Access rights to Published version:

Restricted or Subscription Access

Funder:

European Research Council (ERC)

Grant number:

202735 (ERC)

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

References:

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