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Many safety compromising cracks in rails are surface-breaking and running at about 20 o to the surface. Detecting and sizing them using piezo-electric transducers is not an easy task. It is particularly difficult to assess the amplitudes of the reflected and transmitted waves. We report on recent progress made on modeling scatter of the Rayleigh waves by cracks of this nature using the Sommerfeld-Malyuzhinets-Budaev...
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