Open AccessDETERMINATION OF CRYSTALLOGRAPHIC TEXTURE IN STEEL PLATES USING LASER-GENERATED SURFACE WAVES
Author(s) -
Daniel Lévesque,
Chang-Hwan Lim,
Christian Padioleau,
Alain Blouin,
Donald O. Thompson,
Dale E. Chimenti
Publication year - 2011
Publication title -
aip conference proceedings
Language(s) - English
Resource type - Conference proceedings
SCImago Journal Rank - 0.177
H-Index - 75
eISSN - 1551-7616
pISSN - 0094-243X
DOI - 10.1063/1.3582780
Subject(s) - icon , citation , information retrieval , computer science , texture (cosmology) , filter (signal processing) , publishing , download , computer graphics (images) , world wide web , art , image (mathematics) , artificial intelligence , computer vision , literature , programming language
A 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.Peer reviewed: YesNRC publication: Ye
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