Experimental evaluation of the Wyoming-modified two-rail shear test method for composite materials |
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| Authors: | A K Hussain D F Adams |
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| Institution: | (1) Composite Materials Research Group, University of Wyoming, 8207 Laramie, WY, USA;(2) Present address: Instructor at the MARA Institute of Technology (ITM), Malaysia;(3) Wyoming Test Fixtures, Inc., Laramie, WY, USA |
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| Abstract: | In-plane unidirectional shear properties of carbon/epoxy and glass/epoxy materials were measured using unidirectional and
cross-ply specimens utilizing the Wyomingmodified two-rail shear test fixture. Simple test specimens of trapezoidal and rectangular
geometries, and specimens with tabs were tested. Various specimen sspect ratios were also considered. Untabbed unidirectional
specimens exhibited premature shear failures but cross-ply specimens produced reasonably reliable results with acceptable
failure modes. Both bonded tab and integral tab 0° specimens were found to give comparable results. Unidirectional and cross-ply
PEEK specimens, and angle-ply and quasi-isotropic AS4/3501-6 specimens, were also tested. |
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| Keywords: | Test methods rail shear test shear properties composite materials |
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