Determination of crystallographic texture in steel plates using laser-generated surface waves

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Proceedings titleReview of progress in quantitative nondestructive evaluation: Volume 30A; Volume 30B
Series titleAIP Conference Proceedings; no. 1335
ConferenceQNDE 2010 Annual Review of Progress in Quantitative Nondestructive Evaluation, July 18-23, 2010, San Diego, California, USA
Pages273280; # of pages: 8
SubjectCrystallographic texture; Hot rolled steel plate; Laser ultrasonics; Residual stress
AbstractA laser-ultrasonic approach based on the propagation of surface skimming longitudinal wave (P-wave) and Rayleigh wave (SAW) is investigated for the measurement of crystallographic texture in moderately thick steel plates. The angular dependence of the P-wave and SAW velocities presents different patterns, both of amplitude of a few % attributed to texture. Results obtained from fitting the angular profiles using relevant expressions for P-wave and SAW confirm that texture coefficients may accurately be measured by this approach. Moreover, the difference of the P wave and SAW profiles is shown to be very robust against small path length changes or other detrimental effects such as surface roughness. For actual measurements on large plates, a solution based on the rotation of a generation line using an axicon lens is tested. Texture variations across the width of steel plates and the influence of residual stress are discussed.
Publication date
AffiliationNRC Industrial Materials Institute; National Research Council Canada
Peer reviewedYes
NRC number53824
NPARC number18375258
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Record identifier5b579dd2-c91a-4e84-88ee-7d73b7898dbc
Record created2011-08-04
Record modified2016-05-09
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