Type

Journal Article

Authors

M. D. Gilchrist
L. J. Crane
M. J. Conry

Subjects

Engineering

Topics
ultrasonic waves crack detection safety critical nondestructive testing low frequency ultrasonics rayleigh lamb waves two dimensional

Detection of Defects in a Plate Using Rayleigh-Lamb Waves (2011)

Abstract Nondestructive testing of materials is essential wherever they are used in safety critical applications. Conventional ultrasonic techniques, such as C-scanning, generally use waves propagating normal to the plane surface. While accurate, such methods are slow for structures with large plane areas. The use of longitudinal waves offers the possibility of quicker testing of such structures. This paper considers the reflection of low frequency Rayleigh-Lamb waves by a two dimensional, centrally embedded vertical defect in aluminium plate. A numerical method is used, based on results from dimensionless analytical work. It is shown that such longitudinal ultrasonic waves can successfully detect structural defects.
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, L. J. Crane, M. J. Conry

Experts in our system

1
M. D. Gilchrist
University College Dublin
Total Publications: 172