W J Staszewski et al 2007 Meas. Sci. Technol. 18 727 doi:10.1088/0957-0233/18/3/024
W J Staszewski1, B C Lee1 and R Traynor2
Show affiliationsThe paper presents the application of ultrasonic guided waves for fatigue crack detection in metallic structures. The study involves a simple fatigue test performed to introduce a crack into an aluminium plate. Lamb waves generated by a low-profile, surface-bonded piezoceramic transducer are sensed using a tri-axis, multi-position scanning laser vibrometer. The results demonstrate the potential of laser vibrometry for simple, rapid and robust detection of fatigue cracks in metallic structures. The method could be used in quality inspection and in-service maintenance of metallic structures in aerospace, civil and mechanical engineering industries.
81.70.Cv Nondestructive testing: ultrasonic testing, photoacoustic testing
81.70.Bt Mechanical testing, impact tests, static and dynamic loads
46.80.+j Measurement methods and techniques in continuum mechanics of solids
42.62.Eh Metrological applications; optical frequency synthesizers for precision spectroscopy
Instrumentation and measurement
Issue 3 (March 2007)
Received 30 October 2006, in final form 13 December 2006
Published 24 January 2007
W J Staszewski et al 2007 Meas. Sci. Technol. 18 727
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