Digital phase-shifting grating shearography for experimental analysis of fabric composites under tension

Digital phase-shifting grating shearography has been applied for the investigation of the tensile behaviour of carbon/epoxy plain-weave fabric composite with a small waviness. Experimental analyses were performed for the two following configurations: a single lamina and an iso-phase double laminate....

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Bibliographic Details
Published in:Composites. Part A, Applied science and manufacturing Applied science and manufacturing, 2004-01, Vol.35 (7), p.849-859
Main Authors: Lee, Jung-Ryul, Molimard, J., Vautrin, A., Surrel, Y.
Format: Article
Language:English
Subjects:
A. Fabrics/textiles
Applied sciences
B. Anisotropy
C. Laminate mechanics
Composites
D. Non-destructive testing-optical full-field method
Exact sciences and technology
Forms of application and semi-finished materials
Laminates
Polymer industry, paints, wood
Technology of polymers
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Summary:Digital phase-shifting grating shearography has been applied for the investigation of the tensile behaviour of carbon/epoxy plain-weave fabric composite with a small waviness. Experimental analyses were performed for the two following configurations: a single lamina and an iso-phase double laminate. The yarn crimp effects such as the tension/bending and tension/in-plane shear couplings were concentrated on the resin rich regions for the single lamina. In the latter case, the yarn crimp effects were still significant because although the transverse shear strain due to the local bending effect of yarns is a little constrained by the other neighboring layer, the degree of the constraint was certainly insufficient to degenerate the local bending effect.
ISSN:1359-835X
1878-5840
DOI:10.1016/j.compositesa.2004.01.022