Remote detection of welds depth penetration by laser generated ultrasonics
نویسندگان
چکیده
This paper presents applications of the laser induced shear wave directivity pattern in the thermoelastic regime, to the detection and the in-depth profiling of overthickness and closed cracks perpendicular to the surface. Some results on academic samples and first measurements of actual depth profilings of welds are presented and discussed.
منابع مشابه
Defect Detection and Residual Stress Measurement in Friction Stir Welds using Laser Ultrasonics
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