Strain-energy release rate analysis of composite laminates with locally embedded delaminations

Kazuo Kunoo, Nobuhide Uda, Kousei Ono, Kaoru Onohara

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents experimental and analytical studies of [0/90/-45/+45]S carbon/epoxy laminates with locally embedded delaminations. These laminates are subjected to quasi-static tension, and the strain distributions on the surface of the laminates are investigated using a moire method and a three-dimensional finite element method. These results indicate the strong influence of delaminations on the surface strain distributions of the laminates. The distributions of strain-energy release rates along the delamination crack front are calculated through three-dimensional finite element analysis using a new technique which is based on a virtual crack closure technique. The results show concentrations of GIII at the delamination crack front near the free edge of the laminates.

Original languageEnglish
Title of host publicationTheoretical and Applied Mechanics
PublisherPubl by Univ of Tokyo Press
Pages137-145
Number of pages9
ISBN (Print)4130661108
Publication statusPublished - Dec 1 1991
EventProceedings of the 40th Japan National Congress for Applied Mechanics - NCTAM-40 - Tokyo, Jpn
Duration: Dec 11 1990Dec 13 1990

Publication series

NameTheoretical and Applied Mechanics
Volume40
ISSN (Print)0285-6042

Other

OtherProceedings of the 40th Japan National Congress for Applied Mechanics - NCTAM-40
CityTokyo, Jpn
Period12/11/9012/13/90

Fingerprint

Energy release rate
Strain energy
Delamination
Laminates
Composite materials
Cracks
Finite element method
Crack closure
Carbon

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials

Cite this

Kunoo, K., Uda, N., Ono, K., & Onohara, K. (1991). Strain-energy release rate analysis of composite laminates with locally embedded delaminations. In Theoretical and Applied Mechanics (pp. 137-145). (Theoretical and Applied Mechanics; Vol. 40). Publ by Univ of Tokyo Press.

Strain-energy release rate analysis of composite laminates with locally embedded delaminations. / Kunoo, Kazuo; Uda, Nobuhide; Ono, Kousei; Onohara, Kaoru.

Theoretical and Applied Mechanics. Publ by Univ of Tokyo Press, 1991. p. 137-145 (Theoretical and Applied Mechanics; Vol. 40).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kunoo, K, Uda, N, Ono, K & Onohara, K 1991, Strain-energy release rate analysis of composite laminates with locally embedded delaminations. in Theoretical and Applied Mechanics. Theoretical and Applied Mechanics, vol. 40, Publ by Univ of Tokyo Press, pp. 137-145, Proceedings of the 40th Japan National Congress for Applied Mechanics - NCTAM-40, Tokyo, Jpn, 12/11/90.
Kunoo K, Uda N, Ono K, Onohara K. Strain-energy release rate analysis of composite laminates with locally embedded delaminations. In Theoretical and Applied Mechanics. Publ by Univ of Tokyo Press. 1991. p. 137-145. (Theoretical and Applied Mechanics).
Kunoo, Kazuo ; Uda, Nobuhide ; Ono, Kousei ; Onohara, Kaoru. / Strain-energy release rate analysis of composite laminates with locally embedded delaminations. Theoretical and Applied Mechanics. Publ by Univ of Tokyo Press, 1991. pp. 137-145 (Theoretical and Applied Mechanics).
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