Affiliation:
1. Phillips Petroleum Company Plastics Technical Center Bartlesville, OK 74004
2. Department of Aerospace Engineering and Engineering Mechanics The University of Texas Austin, TX 78712
Abstract
Experimental data from axial and torsional deformation tests on inelastic, angle-ply fiber-reinforced plastic laminates and related theory are used to show that mechanical work is independent of path for suitably limited deformation paths, and thus is a potential. First, results from proportional deformation tests are shown to support the existence of a work potential. Domains of path-independence are then established for non- proportional deformation tests of laminates strained well into the range of nonlinear in elastic behavior. Lastly, a study is described in which a work potential-based theory is used to determine critical mixed-mode energy release rates for laminates subjected to axial and torsional deformations. This relatively simple analysis is shown to provide qualitative correlation between fracture surface morphology and calculated energy release rates.
Subject
Materials Chemistry,Mechanical Engineering,Mechanics of Materials,Ceramics and Composites
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3. Chan, W.S. and O.O. Ochoa 1987 "Assessment of the Free-Edge Delamination Due to Torsion," Proceedings of the American Society for Composites Second Technical Conference, University of Delaware, Sept. 23-25, 1987
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26 articles.
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