... . composites stress strain diagrams computers Ralph Papirno 1 Algebraic Approximations of Stress-Strain Curves for Kevlar-Reinforced Composites REFERENCE: Papimo, R., "Algebraic Approximations of Strem-Sttahl Curvesfor Kevlar-RelnforeedComposites,"Journal of Testing and Evaluation, JTEVA, Vol. 13, No. 2...

... the inhomogeneity of deformation and that these variations are greater in work-hardening materials. Implications for metallographic studies are drawn. stress strain diagrams aluminum alloys lead (metal) metallography plane strain compression testing large deformations tool-specimen geometry strain...

..., the fit of this formulation to data from 2357 tension tests of various materials was found to be excellent. In 90% of the tests, the root-mean-square error in stress was less than 1% of the yield stress and in half the tests the error was less than 0.4% of the yield stress. stress strain diagrams...

... of previous strain, provided that plastic flow preceded the relaxation period. We observed that the short-time relaxation behavior did not manifest strong heat-to-heat variation. stress relaxation stress strain diagrams austenitic stainless steels high temperature tests References “ Class 1...

... compared with test results. Satisfactory agreement was obtained. reinforcing steels stress strain diagrams hysteresis high strength deformed bars mild steel repeated loading reversed loading References Blakely , R. W. G. and Park , R. , Journal of the Structural Division...

... in the form of large, double-cantilever beam specimens. aluminum alloys fracture strength impact tests toughness crack propagation stress strain diagrams fracture energy References Liebowits , H. , Ed., Fracture: An Advanced Treatise , Academic Press , New York , 1969...

... important requisite of a cumulative damage analysis. Two alternative approaches of dealing with the cycle counting problem are discussed. fatigue (materials) deformation metals damage stress strain diagrams hardening (materials) softening stress relaxation cumulative damage analysis cycles...

... sharply notched specimens soften more rapidly at locations near the notches than the less severely notched ones under identical longitudinal strains. fatigue (materials) softening steels plastic properties plastic deformation stress strain diagrams stress concentration cyclic loads geometric...

... the cladding of boiling water reactor fuel rods, but also tube- and plate-type samples have been tested. There was good agreement between the computer-generated values and the values calculated by conventional methods. stress strain diagrams computers tension tests mechanical properties Zircaloys...

... techniques. proportional limit stiffness tests stress strain diagrams elastic properties mechanical properties stresses strain rate References Hamstad , M. A. and Gillis , P. P. , “ Effective Strain Rates in Low-Speed Uniaxial Tension Tests ,” Materials Research and Standards...

... observers and within ±10 percent for the 0.01 percent yield strength. Based on these results, a standard computer program has been developed which generates graphical summaries of the mechanical properties in a form suitable for permanent records. mechanical tests computers stress strain diagrams...