Application of the First Higher-Order (M21) Mode Rayleigh Wave to the Inspection of Stainless Steel Overlays

[+] Author and Article Information
D. E. Bray

Department of Mechanical Engineering, Texas A&M University, College Station, Texas 77843

J. Eng. Mater. Technol 112(3), 298-301 (Jul 01, 1990) (4 pages) doi:10.1115/1.2903327 History: Received September 01, 1988; Revised June 01, 1989; Online April 29, 2008


Efficient inspection of stainless steel overlays appears to present a particularly challenging problem due to the anisotropy that is characteristic of that material. An improved inspection technique may be available, however, when the dissimilar properties of the overlay and the base material are utilized. Higher order mode Rayleigh waves which at high frequencies remain confined to the upper layer of the stainless steel material are demonstrated to be able to detect welding defects in the overlay material in a field some distance away from the probe. With this technique, a larger area may be scanned with each probe placement rather than the point contact probe inspection method that is typically used.

Copyright © 1990 by The American Society of Mechanical Engineers
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