Peer-Reviewed Journal Details
Mandatory Fields
O'Masta, MR;Russell, BP;Ronan, W
2018
July
Composites Part A-Applied Science And Manufacturing
Inter-ply angle influence on the out-of-plane compressive response of polyethylene fibre laminates
Published
WOS: 1 ()
Optional Fields
BALLISTIC IMPACT RESPONSE COMPOSITE PENETRATION MECHANISMS SHEAR ARCHITECTURE PERFORMANCE BEAMS MODEL
110
11
20
Ultra-high molecular weight polyethylene (UHMWPE) fibre reinforced composites find extensive use in impact protection applications. When loaded in out-of-plane (through thickness) compression, UHWMPE laminates composed of a typical cross-ply lay-up (an inter-ply angle of theta = 90 degrees) are known to exhibit fibre tensile rupture via a shear-lag mechanism. This study addresses the effect of inter-ply angle (theta = 18-90 degrees) on the compressive response of UHMWPE laminates and shows they may fail by this indirect tension mechanism. The shear-lag length increases as theta is reduced, which reduces the compressive strength at small sample sizes. A previous analytical model to predict compressive failure by this mechanism is generalised for laminates with non-orthogonal but constant inter-ply angles. The predictions capture the two key experimental observations which are dependent on inter-ply angle and sample size: the transition from ply shear failure to indirect fibre tensile rupture and the compressive strength.
1359-835X
10.1016/j.compositesa.2018.03.032
Grant Details
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