Abstract
An investigation has been made of multiple transverse cracking in glass fibre epoxy cross-ply laminates. Four laminates of differing transverse ply thicknesses were investigated. Transverse crack spacing was found to decrease with increasing applied stress and decreasing transverse ply thickness. Very close agreement has been found between the experimental results and a multiple cracking theory based on shear lag analysis in which the plies remain essentially elastically bonded. In these composites a small modulus change is observed at a strain lower than that at which cracking initiated. This phenomenon is associated with a visual, under some circumstances reversible, whitening effect.
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References
K. W. Garrett and J. E. Bailey, J. Mater. Sci. 12 (1977) 157.
A. Parvizi, K. W. Garrett and J. E. Bailey, ibid. 13 (1978) 195.
T. E. Ashton, T. C. Halpin and P. H. Petit, “Primer on Composite Materials: Analysis” (Technomic, Stamford, Conn., 1969) p. 77.
G. T. Stevens and A. W. Lupton, J. Mater. Sci. 12 (1977) 1706.
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Parvizi, A., Bailey, J.E. On multiple transverse cracking in glass fibre epoxy cross-ply laminates. J Mater Sci 13, 2131–2136 (1978). https://doi.org/10.1007/BF00541666
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DOI: https://doi.org/10.1007/BF00541666