BibTex format
@inproceedings{Sun:2020,
author = {Sun, J and Pernice, MF and Bacarreza, O and Robinson, P},
title = {Pseudo-ductility in 0-degree fibre dominated CFRP through ply weakening},
year = {2020}
}
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RIS format (EndNote, RefMan)
TY - CPAPER
AB - Previous research has demonstrated pseudo-ductile tensile response can be achieved by introducing periodic across-width ply cuts, perpendicular to selected 0° plies, in both unidirectional (UD) and quasi-isotropic (QI) laminates. The inserted discontinuities initiate progressive delamination at the interface between the cut and pristine (uncut) plies. The tensile stress-strain curve consists of an initial almost linear stage with high modulus, a flat plateau stage and a final strain-hardening stage. This paper presents the enhanced pseudo-ductile performance achieved by introducing dispersed periodic short perforations in the UD laminates. Perforations with precisely controlled length were cut into the constituent prepregs using a laser milling machine. UD laminates containing perforations in selected plies exhibit high initial modulus, a softening stage prior to a final strain-hardening stage, all connected by smooth transitions. The dominant failure mechanism in this case was debonding surrounding the discontinuous perforated fibre bundles. This failure mechanism was successfully transferred to 0° fibre-dominated multi-directional (MD) laminates with perforations introduced in the middle 0° plies, and thereby provided pseudo-ductile performance.
AU - Sun,J
AU - Pernice,MF
AU - Bacarreza,O
AU - Robinson,P
PY - 2020///
TI - Pseudo-ductility in 0-degree fibre dominated CFRP through ply weakening
ER -