The Reflection of Guided Waves From Circumferential Notches in Pipes

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 n...

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Bibliographic Details
Published in:Journal of applied mechanics 1998-09, Vol.65 (3), p.635-641
Main Authors: Alleyne, D. N, Lowe, M. J. S, Cawley, P
Format: Article
Language:English
Subjects:
Applied sciences
Chemical plants
Computer simulation
Elastic waves
Exact sciences and technology
Finite element method
Functions
Fundamental areas of phenomenology (including applications)
Mechanical engineering. Machine design
Physics
Solid mechanics
Steel design
Steel tanks and pressure vessels
boiler manufacturing
Structural and continuum mechanics
Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...)
Vibrations and mechanical waves
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Summary: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.
ISSN:0021-8936
1528-9036
DOI:10.1115/1.2789105