Accession Number : ADA140227

Title :   Cumulative Creep Damage for Polycarbonate and Polysulfone,

Corporate Author : VIRGINIA POLYTECHNIC INST AND STATE UNIV BLACKSBURG DEPT OF ENGINEERING SCIENCE AND MECHANICS

Personal Author(s) : Zhang,M J ; Brinson,H F

PDF Url : ADA140227

Report Date : May 1984

Pagination or Media Count : 37

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 cumulative damage law or modified time fraction rule is developed using a power law for transient creep response as the starting point. Experimental results are approximated well by the new rule. Damage and failure mechanisms associated with the two materials are suggested. (Author)

Descriptors :   *Polymers, *Composite materials, *Creep, *Failure(Mechanics), *Creep tests, *Mathematical analysis, Structural response, Polycarbonates, Polysulfones, Loads(Forces), Bonded joints, Damage, Tolerances(Mechanics), Modulus of elasticity, Fatigue(Mechanics), Stress concentration, Thermal expansion, Stability, Tensile strength, Manufacturing, Fastenings, Rivets, Bolts, Costs, Mathematical prediction, Equations, Experimental data

Subject Categories : Laminates and Composite Materials
      Plastics
      Numerical Mathematics
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE