Analysis of Rayleigh wave interactions for surface crack characterization
Rosli, M. H., Fan, Y. and Edwards, R. S. (Rachel S.) (2012) Analysis of Rayleigh wave interactions for surface crack characterization. In: Review of Progress in QNDE, Burlington, VT, 17-22 July, 2011. Published in: AIP Conference Proceedings, Volume 1430 (Number 31). pp. 209-216.
WRAP_EDwards_0271116-px-101012-rosli_not_final.pdf - Accepted Version
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Official URL: http://dx.doi.org/10.1063/1.4716232
Electromagnetic acoustic transducers (EMATs) have been used in pitch-catch mode for a better characterization of surface cracks in metals. The system, which combines the measurement of Rayleigh wave velocity in the in-plane and out-of-plane directions, has been used to understand the interaction of Rayleigh waves with inclined surface cracks. This shows a stronger and more prominent enhancement pattern when compared to the enhancement caused by cracks which are normal to the surface. In addition, measurements in the far-field are combined with the near-field enhancement measurement, with a view to characterize the cracks. An algorithm for characterizing surface cracks is presented. A finite element method model has been computed to simulate the experiment, and the cause of the prominent enhancement in the inclined cracks is explained.
|Item Type:||Conference Item (Paper)|
|Subjects:||Q Science > QC Physics|
|Divisions:||Faculty of Science > Physics|
|Library of Congress Subject Headings (LCSH):||Metals -- Surfaces -- Defects, Rayleigh waves|
|Journal or Publication Title:||AIP Conference Proceedings|
|Publisher:||American Institute of Physics|
|Page Range:||pp. 209-216|
|Access rights to Published version:||Restricted or Subscription Access|
|Conference Paper Type:||Paper|
|Title of Event:||Review of Progress in QNDE|
|Type of Event:||Conference|
|Location of Event:||Burlington, VT|
|Date(s) of Event:||17-22 July, 2011|
1. I. A. Viktorov, Rayleigh Waves and Lamb Waves-Physical Theory and Application, Plenum, New York (1967).
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