A S Murfin

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In this work, a non-steady-state photo-emf receiver has been used to detect the lower frequency fundamental a0 Lamb waves in mild steel. Experimentally, the Lamb waves are laser-generated in the thermoelastic regime using a Q-switched, 20 ns, pulsed Nd:YAG laser and a line source. Typical Lamb waves had centre frequencies of 250 kHz but with frequency(More)
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