Journal Article


M. D. Gilchrist



rayleigh lamb waves high frequency longitudinal waves elastic crack detection plate ultrasonic waves ultrasonics

Attenuation Of Ultrasonic Rayleigh-Lamb Waves By A Symmetrical Embedded Crack In An Elastic Plate (1999)

Abstract The present paper illustrates how embedded vertical defects can be detected rapidly in sheet metal by using longitudinal ultrasonic waves. Computational methods are used to validate analytical predictions of the reflection coefficients due to the attenuation of such ultrasonic waves by physically small defects. It is shown that detectable attenuation of the lowest order symmetric Rayleigh–Lamb wave (S0) occurs for a range of small defects (sub-millimeter in length) when using high-frequency waves (MHz range).
Collections Ireland -> University College Dublin -> Mechanical & Materials Engineering Research Collection
Ireland -> University College Dublin -> College of Engineering & Architecture
Ireland -> University College Dublin -> School of Mechanical and Materials Engineering

Full list of authors on original publication

M. D. Gilchrist

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M. D. Gilchrist
University College Dublin
Total Publications: 172