..., recently been developed. These models were used to predict tertiary creep for copper at 75 °C. In the present paper, these models are applied to creep tests at higher temperatures (215 and 250 °C). These results demonstrate again that tertiary creep in copper is primarily controlled accelerated recovery...

... quantities such as Young’s modulus or the stored energy associated to each loading-unloading cycle. Furthermore specific transition strains, A, B, C, and D, can be determined where the recovery properties change. It is demonstrated that beyond point C the strain hardening can be described by the simple...

...Erik Marklund; Janis Varna; Lennart Wallström In tensile tests the flax/polypropylene composites clearly show nonlinear behavior in loading and hysteresis loops in unloading. In creep tests performed at different load levels the response was nonlinear viscoelastic, and after recovery, viscoplastic...

...Limin Luo; Amit K. Ghosh Strain recovery after plastic prestrain and associated elastic and inelastic behavior during loading and unloading of DQSK steel sheet are measured. Average tangent modulus and Poisson’s ratio during unloading and reloading are found to differ from their elastic values...

.... Associate Editor: G. Johnson. 28 September 1999 18 September 2000 04 04 2003 stress-strain relations Weibull distribution internal stresses plasticity plastic deformation heat treatment finite element analysis cooling thermal expansion recovery X-ray diffraction...

... to the non-linear interactions of various material and process parameters. One of the major causes for the fabrication of inconsistent sheet metal parts is springback, the elastic strain recovery in the material after the tooling is removed. In this paper, springback of a steel channel forming process...

... slip rotation yield stress plastic flow engineering recovery austenitic stainless steel If a metal or alloy specimen is subjected to repeated cycles of loading under stress control where the maximum stress exceeds initial yield and in the presence of a mean stress, the metal settles down...

... and mechanical testing results are described. The recovery stress-strain at various ambient temperatures by means of strain gauges are reported. A typical shrinkage of the SMA-FEC was recognized with increasing temperature above the inverse transformation temperature A f of embedded SMA TiNi fiber...

.... Zbib. 19 January 2002 19 February 2002 10 06 2002 plasticity indentation hardness slip plastic flow bending elasticity dislocation density recovery kinematics Gradient plasticity of the form and scope discussed here was introduced by the second author and his...

... slip plastic flow hardening recovery dislocation density elastic deformation kinematics torsion compressive strength bending This article is concerned with the analysis of the heterogeneous character of plastic flow at the micrometer level. In particular, the case of monocrystalline...

...Jidong Kang; W. Steven Johnson; David A. Clark A three-dimensional finite element analysis is developed for the cold expansion process in two aluminum alloys, 2024-T351 and 7050-T7451. The entire cold working process including hole expansion, elastic recovery, and finish reaming is simulated. Both...

...Kwangsoo Ho; Erhard Krempl The viscoplasticity theory based on overstress (VBO) is altered by introducing an augmentation function into the dynamic recovery term of the growth law of the equilibrium stress, which is a tensor valued state variable of the model. It is a measure of the defect...