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Effects of fibre/matrix adhesion on carbon-fibre-reinforced metal laminates—II. impact behaviour

1998; Elsevier BV; Volume: 57; Issue: 12 Linguagem: Inglês

10.1016/s0266-3538(97)00094-8

1879-1050

Glyn Lawcock, Lin Ye, Yiu‐Wing Mai, C.T. Sun,

Natural Fiber Reinforced Composites

Quasi-static, low-hanging and high-velocity impact tests have been conducted in order to study the effect of fibre/matrix adhesion on the impact properties of fibre-reinforced metal laminates. Differences in fibre/matrix adhesion were achieved by using treated or untreated carbon fibres in an epoxy resin system. Chemical removal of the aluminium layers and a sectioning technique were applied to examine and characterize the impact damage in the laminates. The results show that the laminates with the weaker fibre/matrix adhesion exhibit larger damage zones, although the back face crack length and permanent indentation after impact are smaller for a given impact energy. Residual tensile strength after impact is also higher for the untreated fibre laminates due to increased fibre/matrix splitting in the composite layer.