Critical assessment of failure criteria for adhesively bonded composite repair design

Donough, M, Gunnion, A, Orifici, A and Wang, C 2012, 'Critical assessment of failure criteria for adhesively bonded composite repair design', in Prof I. Grant, Andrew Drysdale (ed.) Proceedings of the 28th Congress of the Aeronautical Sciences, Brisbane, Australia, 23-28 September, 2012, pp. 1-11.


Document type: Conference Paper
Collection: Conference Papers

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Title Critical assessment of failure criteria for adhesively bonded composite repair design
Author(s) Donough, M
Gunnion, A
Orifici, A
Wang, C
Year 2012
Conference name International Council of the Aeronautical Sciences
Conference location Brisbane, Australia
Conference dates 23-28 September, 2012
Proceedings title Proceedings of the 28th Congress of the Aeronautical Sciences
Editor(s) Prof I. Grant, Andrew Drysdale
Publisher ICAS
Place of publication Brisbane, Australia
Start page 1
End page 11
Total pages 11
Abstract Due to the high stress concentration and non-linear deformation in bonded joints, accurate strength prediction remains challenge. The aim of this paper is to evaluate the accuracies of different failure criteria and computational methodologies for bonded composite joints and their suitability as an engineering design tool. A total of four analytical and four numerical predictive models were evaluated against experimental results obtained from single lap and skin-doubler joints. Experimental observations reveal two main failure modes: cohesive and first-ply fracture. Strain-based models based on cohesive properties were found to be applicable only to joints exhibiting cohesive failure. Fracture mechanics-based models, on the other hand, can predict both cohesive and composite ply failure.
Subjects Aerospace Structures
Keyword(s) bonded joints
composites
analytical prdictions
finite element analysis
Copyright notice © 2012 ICAS & The Authors
ISBN 9780956533319
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