Folding of woven composite structures

Abstract

This paper investigates one-ply and two-ply laminates made from woven T300 carbon fibre and Hexcel 913 and 914 epoxy resins. These laminates are of interest for deployable structure applications. The maximum surface bending strain, measured by means of a large-displacement buckling test, is found to be 2.8% for one-ply and 1.9% to 2.2% for two-ply specimens in the direction of the fibres. In tension the maximum strains in the fibre direction are 0.9% to 1.0% and in compression 0.4% to 1.0%.

A Novel Deployable Open Ends Support Reflector

“…Of course, the peak bending strains are compared with the ultimate strains for fibers. However, numerous experiments on thin laminates made from woven CFRP composites [4,5] have shown that these laminates are able to survive peak bending strains that are much larger than those obtained from the above approach. Therefore, here it will be assumed that a woven lamina in bending fails when the strain at the center of the outermost yarn reaches the ultimate value:…”