Edge effect on the damage development of CFRP

Authors: Yokozeki, T.; Hayashi, Y.; Ishikawa, T.; Aoki, T.

Source: Advanced Composite Materials, Volume 10, Number 4, 2001 , pp. 369-376(8)

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Abstract:

The damage process of transverse cracks in quasi-isotropic CFRP laminates under quasi-static loading is studied. It is necessary to investigate the damage process of transverse cracks in order to apply CFRP composites to cryogenic fuel tanks of a Reusable Launch Vehicle (RLV). To investigate edge and specimen configuration effects on transverse cracks, coupon specimens with a range of specimen widths and transverse ply thicknesses are tested under tensile loads. Measurements of edge crack density and detailed observations of transverse crack propagation across the specimen width are made. The results suggest that transverse cracks initiate from free-edges and transverse ply thickness has significant effect on transverse crack propagation.

Keywords: DAMAGE; CFRP; TRANSVERSE CRACKING; FREE-EDGE EFFECT

Document Type: Research article

DOI: http://dx.doi.org/10.1163/156855101753415391

Publication date: 2001-12-01