Thermal Stress, Material Deformation, and Thermo-mechanical Fatigue: Presented at the 1987 Pressure Vessels and Piping Conference, San Diego, California, June 28-July 2, 1987Hasan Sehitoglu, S. Y. Zamrik |
Contents
Life Prediction Procedures and Damage Mechanics | 1 |
Calculation of Thermomechanical Fatigue Life Based on Isothermal Behavior | 9 |
Crack Growth in Alloy 718 Under ThermalMechanical Cycling | 23 |
Copyright | |
12 other sections not shown
Common terms and phrases
aging analysis applied approach assumed back stress behavior calculated changes components compressive considered constant constitutive corresponding crack growth creep creep-fatigue criterion curve cycle CYCLES TO FAILURE cyclic damage decreases deformation dependent determined developed direction drag stress effects elastic Engineering equation evaluated examined experimental experiments factor fatigue Figure flow function given hardening heat high temperature histories increasing independent initial internal isothermal lives loading loops material maximum mean measure mechanisms method observed obtained occur operating parameters performed plastic strain predicted present pressure produce properties provides range ratchetting recovery relation relaxation represents response rule rupture shown in Fig shows softening specimen stainless steel strain concentration strain rate strainrange strength Stress MPa stress-strain structural surface Table temperature tensile term tests theory thermal thermomechanical time-dependent tube versus yield Δε