Abstract
The literature for creep-to-failure cumulative-damage laws are reviewed. Creep-to-failure tests performed on polycarbonate and polysulfone under single- and two-step loadings are discussed. A semiempirical cumulative-damage rule or modified time-fraction rule is developed, using as the starting point a power law for transient creep response. Experimental results are approximated well by the new rule. Damage and failure mechanisms associated with the two materials are suggested.
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performed this work Visiting Scientist, Department of Engineering Science and Mechanics, Virginia Polytechnic Institute and State University.
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Zhang, M.J., Brinson, H.F. Cumulative creep damage for polycarbonate and polysulfone. Experimental Mechanics 26, 155–162 (1986). https://doi.org/10.1007/BF02320009
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DOI: https://doi.org/10.1007/BF02320009