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A new ENF test specimen for the mode II delamination toughness testing of stitched woven CFRP laminates

Wood, Michael D. and Sun, X. and Tong, L. and Luo, Q. and Katzos, A. and Rispler, A.R. (2007) A new ENF test specimen for the mode II delamination toughness testing of stitched woven CFRP laminates. Journal of Composite Materials, 41 (14). pp. 1743-1772. ISSN 0021-9983

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Abstract

This paper presents an experimental and numerical investigation on the effects of stitching distribution on the interlaminar fracture toughness of carbon fiber reinforced polymers (CFRPs) using an end notch flexure (ENF) specimen. To avoid premature failure in bending, reinforcing tabs were bonded to either side of the ENF specimens to create a tabbed ENF (TENF) specimen. The effect of stitch distribution on mode II delamination toughness is investigated by considering several stitch distribution patterns. The experimental results indicate that the mode II delamination toughness of stitched TENF specimens can be effectively measured and that stitch distribution does not play a significant role in improving the steady-state mode II delamination toughness of stitched CFRPs. Numerical results are also obtained using both MSC/NASTRAN and an in-house software for the tested specimens. A reasonable correlation exists between the numerical and experimental results.

Item Type: Journal Article
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Science, Technology and Environment (FSTE) > School of Engineering and Physics
Depositing User: Ms Mereoni Camailakeba
Date Deposited: 22 Nov 2007 09:29
Last Modified: 19 Jul 2012 14:56
URI: http://repository.usp.ac.fj/id/eprint/873
UNSPECIFIED

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