Hybrid analysis of Lamb wave reflection by a crack at the fixed edge of a composite plate

Karunasena, WM, Liew, KM and Kitipornchai, S (1995) Hybrid analysis of Lamb wave reflection by a crack at the fixed edge of a composite plate. Computer Methods in Applied Mechanics and Engineering, 125 1-4: 221-233. doi:10.1016/0045-7825(95)00802-8

Author Karunasena, WM
Liew, KM
Kitipornchai, S
Title Hybrid analysis of Lamb wave reflection by a crack at the fixed edge of a composite plate
Journal name Computer Methods in Applied Mechanics and Engineering   Check publisher's open access policy
ISSN 0045-7825
Publication date 1995-09-01
Sub-type Article (original research)
DOI 10.1016/0045-7825(95)00802-8
Open Access Status Not yet assessed
Volume 125
Issue 1-4
Start page 221
End page 233
Total pages 13
Publisher Elsevier BV
Language eng
Subject 1706 Computer Science Applications
2206 Computational Mechanics
2210 Mechanical Engineering
2211 Mechanics of Materials
3100 Physics and Astronomy
Abstract A hybrid method has been proposed to solve the problem of reflection of time harmonic plane strain waves normally incident upon a thin planar crack located at the fixed-end of a semi-infinite, uniaxially fibre-reinforced, composite plate of linearly elastic materials. The hybrid method combines a finite element formulation in a bounded interior region of the plate with a wave function expansion representation in an unbounded exterior region. The fixed-end crack is contained in the interior region. The dispersion relation of the plate is solved through an approximate technique to obtain wave functions. The amplitudes of reflected waves are determined by satisfying the continuity conditions at the boundary between the interior and exterior regions. It is shown that the results agree well with known solutions for zero-thickness and through-thickness cracks in a homogeneous isotropic plate. New results are presented for a graphite/epoxy composite plate. The accuracy of the results is verified by checking the satisfaction of the principle of energy conservation and reciprocity relations. The influence of fibre direction elastic stiffness on reflection coefficients has also been studied. The results of the study show potential application in ultrasonic non-destructive evaluation.
Keyword Mechanical Engineering
General Physics and Astronomy
Mechanics of Materials
Computational Mechanics
Computer Science Applications
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 13 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 13 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Wed, 06 Sep 2017, 16:02:09 EST by Jeannette Watson