Optical Generation of Tone-burst Rayleigh Surface Waves for Nonlinear Ultrasonic Measurements
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Detection and Characterisation of Surface Cracking using Scanning Laser Techniques
The use of lasers for generating and detecting ultrasound is becoming more established in non-destructive testing. However, there is still scope in developing the techniques to fully realise the benefits of non-contact measurements. One application is the detection of surface defects in metals; for example, rolling contact fatigue in rails, and surface cracking on billets or plates. We present ...
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