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Optical Production and Detection of Ultrasonic Waves in Metals for Nondestructive TestingUltrasonic waves were produced by striking the surface of a metal with the focused one-joule pulse of a Q-switched ruby laser. Rayleigh (surface) waves and longitudinal waves were detected with conventional transducers. Optical methods of detection were tested and developed. Rayleigh waves were produced with an oscillator and transducer. They were optically detected on curved polished surfaces, and on unpolished surfaces. The technique uses a knife edge to detect small angle changes of the surface as the wave pulse passes the illuminated spot. Optical flaw detection using pulse echo and attenuation is demonstrated.
Document ID
Document Type
Morrison, R. A.
(Talladega Coll. AL, United States)
Date Acquired
August 7, 2013
Publication Date
September 1, 1972
Publication Information
Publication: Auburn Univ. The NASA-ASEE Summer Fac. Fellowship Program
Subject Category
Accession Number
Distribution Limits
Work of the US Gov. Public Use Permitted.
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