Weld defect detection using PPM EMAT generated shear horizontal ultrasound
نویسندگان
چکیده
منابع مشابه
Detection of cracks in metal sheets using pulsed laser generated ultrasound and EMAT detection.
A pulsed Nd:YAG laser with an approximately Gaussian beam shape is directed onto the surface of an aluminium sheet at an energy density below which damage by laser ablation occurs, generating Lamb waves in the sheet. The laser beam is raster scanned across the surface of the sample. The Lamb waves travel radially outwards from the generation point and are detected some distance away by an elect...
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ژورنال
عنوان ژورنال: NDT & E International
سال: 2015
ISSN: 0963-8695
DOI: 10.1016/j.ndteint.2015.05.005