Title: EFFECTS OF FIBRE SURFACE TREATMENT ON DYNAMIC TENSILE PROPERTIES OF GLASS WOVEN FABRIC REINFORCED VINYLESTER COMPOSITES
Page Range: p.453-466
Author(s): Jang-Kyo Kim; Man-Lung Sham; Min-Seok Sohn; Shisheng Hu
File size: 330K
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Journal: Polymers and Polymer Composites
Issue Year: ppc
Volume: 13
Issue No: No. 5
Abstract
This paper is a continuation of previous studies on the characterisation of mechanical and fracture properties of glass fibre vinyl ester matrix composites with a controlled fibre surface treatment. The mechanical responses of composites under impact tensile loading are compared with the corresponding static behaviour so as to identify the sensitivity of interface properties on strain rate dependent tensile behaviour. The effect of the weave structure was also specifically evaluated by loading the composites in the weft and warp directions of the woven fabric reinforcement. Results indicated that both the ductility and the strength of the composites increased with increasing strain rate. The tensile strength was lower and the failure strain was higher in the weft direction than in the warp direction, because of excessive crimping in the former direction. The tensile strength in general increased with increasing silane concentration, for the majority of strain rates studied. The influence of fibre surface treatment on the impact tensile strength and modulus of composites were found to be functionally similar, confirming the fibre-matrix interphase properties on composite fracture behaviour at high strain rates. 30 refs.
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