Stress-corrosion cracking and its propagation in aligned short-fibre composites |
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| Authors: | Pau-Lo Hsu Shi-Shen Yau Tsu-Wei Chou |
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| Affiliation: | (1) Center for Composite Materials and Department of Mechanical and Aerospace Engineering, University of Delaware, 19716 Newark, Delaware, USA;(2) Present address: Mechanical Engineering Department, University of Wisconsin, 53706 Madison, Wisconsin, USA |
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| Abstract: | Stress-corrosion tests are conducted on aligned short-fibre composites to assess their performance in both air and 1 N H2SO4 environments. The materials used are 3 mm E-glass, AS4 carbon, and their hybrid fibre reinforced epoxy composites. Several crack propagation models are developed to describe different cracking behaviour; the observed composite fracture modes verify these proposed models. Pre-immersion has significant effects onK l-t f and crack arrest of hybrid composites. A comparison of theoretical and experimentalK l-t f curves indicates good agreement of time to failure. The present research has quantified the susceptibility of these composites to environmental attack. |
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