Photoelastic investigation of bolted joints in composites |
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| Affiliation: | 1. College of Forestry and Landscape Architecture, Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture, Key Laboratory of Biomass Energy of Guangdong Regular Higher Education Institutions, South China Agricultural University, Guangzhou, Guangdong, China;2. State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei, China;3. Department of Chemistry and Biochemistry, Kent State University, Kent, OH, United States;1. Department of Neurology and Rehabilitation, Graduate Program in Neuroscience, University of Illinois at Chicago, 912 S. Wood Street, Chicago, IL 60612, USA;2. Department of Orthopedics, University of Illinois at Chicago, 835 S. Wolcott Street, Chicago, IL 60612, USA |
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| Abstract: | In this paper, the methods of photo-orthotropic elasticity are applied to the study of bolted joints in composites. The photoelastic models are E-glass fibre-reinforced epoxy strips loaded through a cylindrical pin, simulating bolt loading without lateral pressure. A special loading arrangement is devised so that the photoelastic response around the hole is not obscured. Quasi-isotropic and unidirectionally-reinforced specimens are tested, with ratios of end distance to hole diameter varying from 2 to 6. Photoelastic isochromatic fringe patterns are presented along with the shear stress distribution for the quasi-isotropic models. |
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