The Reflection of Guided Waves From Circumferential Notches in Pipes

[+] Author and Article Information
D. N. Alleyne, M. J. S. Lowe, P. Cawley

Department of Mechanical Engineering, Imperial College, London SW7 2BX, U.K.

J. Appl. Mech 65(3), 635-641 (Sep 01, 1998) (7 pages) doi:10.1115/1.2789105 History: Received September 11, 1996; Revised May 06, 1998; Online October 25, 2007


The reflection of the L(0, 2), axially symmetric guided elastic wave from notches in pipes is examined, using laboratory experiments and finite element simulations. The results show that the reflection coefficient of this mode is very close to a linear function of the circumferential extent of the notch, and is a stronger function of the through thickness depth of the notch. The motivation for the work was the development of a technique for inspecting chemical plant pipework, but the study addresses the nature of the reflection function and has general applicability.

Copyright © 1998 by The American Society of Mechanical Engineers
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