... at high stresses (or strain-rates) was proposed to be due to the cutting by dislocations of radiation-produced obstacles. In this stress (strain-rates) region, in-pile behavior was proposed to be identical to post-irradiation behavior. At intermediate stresses (strain-rates) a mechanism of radiation...

... and plasticity of the Zr-1%Nb alloy was determined under the temperature and strain rate conditions typical of hot deformation processing. The best temperature range is identified for the hot deformation processing of the Zr-1%Nb alloy. Also, a mathematical model is identified for the maximum plasticity...

... specimens made of the adhesive FM 300K was determined in the dry/cold, moderate, and humid/hot environments; the strain rates were 10 -2 /s, 10 -4 /s, and 10 -6 /s. In the second set, single specimens of five other adhesives were tested in the dry/cold and humid/hot environments; the strain rate was 10 -4...

... A research program is underway to experimentally characterize the strain rate dependent deformation and failure response of polymer matrix composites subject to high strain rate impact loads and to develop strain rate dependent deformation and failure models for the analysis of these types...

..., and (8) acquiring data automatically. The need to carefully control the environment and strain rate is shown with stress-strain curves that were measured at different relative humidities (15, 50 and 85%), temperatures (-15, 30 and 50 °C) and initial strain rates (10 -2 , 10 -4 , 10 -6 and 10 -8 s -1...

... An overstress viscoplasticity model is proposed to describe the rate-dependent behavior of a polymeric composite during loading and unloading. In the model, a three-parameter function is used to describe viscoplastic strain rate. In the loading stage, the equilibrium stress is determined using...

... of the steel are above a minimum threshold level, and the loading strain rate is below a threshold value. Only a moderate decrease in fatigue life is observed when any one of these conditions is not satisfied. This paper summarizes available data on the effects of various material and loading variables...

..., the present authors have noted strain rate, temperature, and dissolved oxygen (DO) content, and proposed a method of evaluating the environmental fatigue lives for the Class 1 vessels when they vary with time. In this paper, this method is examined against, and revised in view of, the fatigue data acquired...

... rupture fatigue frequency hold times Nextel 610 oxide/oxide strain rate tension Larry P. Zawada 1and Shin S. Lee1 THE EFFECT OF HOLD TIMES ON THE FATIGUE BEHAVIOR OF A N OXIDE/OXIDE CERAMIC MATRIX COMPOSITE REFERENCE: Zawada, L. P. and Lee, S. S., "The Effect of Hold Times on the Fatigue...

... A computer-controlled 100 kN high strain rate compression test system was developed for hot deformation experiments at up to 1300 °C under controlled strain rates between 0.01 s -1 and 200 s -1 . The design implements a number of schemes tailored for high strain rate testing. These relate...

.... This paper presents a framework for accounting for the effect of the rate of strain on the mechanical properties. The effect of drainage path length on the amount of secondary compression and the apparent increase in the strength of clay that occurs due to the increase in strain rate can be counterbalanced...

... The development of slow strain rate testing for environment sensitive cracking over the last 25 years is reviewed. In its original form, in which specimens are continuously strained to total failure, the method is still valuable, especially as a rapid sorting approach to the effects...

... A state-of-the-art survey was performed on slow strain rate (SSR) testing methods for the Materials Technology Institute of the Chemical Process Industries, Inc. (MTI). The goal of the survey was to determine if SSR testing methods yield useful data in predicting stress-corrosion cracking (SCC...

... Slow strain rate testing (SSRT) has been evaluated by the oil and gas industry for investigating anodic chloride/sulfide stress corrosion cracking (SCC). It is used not only as a method of screening nickel-base corrosion resistant alloys (CRA) for downhole use, but also as a quality control test...

... For quite some time now, the Slow Strain Rate (SSR) test has been used in the Oil Patch as a Lot Acceptance Criterion. The most common pass/fail criteria for SSR testing is the ratio of Time to Failure (TTF), Percent Reduction of Area (%RA), or Percent Elongation (%E1), or a combination thereof...

... strains in the range from 0.5 to 2.0%. Afterwards, tensile tests were conducted with strain rates in the range of from 10 −6 s −1 to 1 s −1 at a temperature of 823 K. We observed that radiation reduces the elongation and subsequently ultimate tensile strength for strain rates below 10 −4 s −1...

... laminate incremental strain test test method graphite/epoxy damage viscoelastic interlayer strength load relaxation damage tolerance first-ply failure matrix cracking acoustic emission characteristic damage state durability strain rate R. E. Swain, 1 K. L. Reifsnider, 'and J. Vittoser...

... The composite material consists of 25 volume percent of silicon carbide whiskers in 2014-T4 aluminum matrix. Specimens were taken from hot-isostatically-pressed cylindrical billets and tested at various loading conditions and strain rates. Tension and compression tests were performed at strain...

... lives in all cases. fatigue (materials) creep-fatigue life prediction strainrange partitioning creep properties plastic properties cyclic plasticity inelastic analysis strain rate hold time low alloy steel M. Yamauchi, ^ T. Igari, ^ K. Setoguchi, ^ and H. Yamanouchf Comparison...

... stainless steel were used in the analysis. The experiments were performed at 15 temperatures that ranged from room temperature to 800°C and under four strain rate conditions that ranged from 6.7 × 10 −3 s −1 to 6.7 × 10 −6 s −1 . Modes of variation, both in stress amplitude and in fatigue life...