The mean stress effect on the fatigue life of 304L austenitic steel was evaluated at 300 °C in air and pressurized water reactor (PWR) environments. Uniaxial tests were performed strain-control load-control modes, with zero a positive 50 MPa. A specific procedure used for strain-controlled experiments to maintain strain amplitude constant. data indicate that application decreases given PWR also...

Using insitu digital image correlation to obtain full-field measurements, we study the intermartensitic transformations in single crystal NiFeGa. Full-field strain measurements identify the coexistence of modulated martensite phases during the first plateau of the multistage stress-strain curve at room temperature. At a higher temperature, the measurements indicate the bypassing of one of the m...

Servo press technology is gaining attention because its punch motion curve offers greater formability than that of a conventional stamping press. This study investigated the effect curves on circular cup extrusion–drawing process. Various were analyzed, and optimal for application was determined. Both process spring back U-shaped sheet metal investigated. In process, (Case A) three servo (Cases...

In this study, nonlinear vibration of a composite cable is investigated by considering nonlinear stress-strain relations. The composite cable is composed of an aluminum wire as reinforcement and a rubber coating as matrix. The nonlinear governing equations of motion are derived about to an initial curve and based on the fundamentals of continuum mechanics and the nonlinear Green-Lagrangian stra...

This article reports an unexpected finding of the mechanical behavior Al-12%Si alloy manufactured using laser powder bed fusion (L-PBF) process. The as-manufactured specimen has a negative strain rate sensitivity flow stress at early stage tensile deformation (below 3% in strain). post heat-treated specimens exhibited positive strain-rate and none these serrated stress-strain curve, indicating ...

Unsaturated soils in engineered geostructures like embankments or retaining walls may experience seismic compression during earthquakes due to particle rearrangement associated with large-strain cyclic shearing. Although previous studies have investigated volume changes drained shearing of unsaturated soils, undrained presents a more complex situation. During shearing, total volume, matric suct...

Driven by the wide range of new material properties offered by multi-material 3D printing, there is emerging need to create predictive material models for these materials. A data driven process for estimating nonlinear material model is presented in this paper. In contrast with classical methods which derive the engineering stress-strain relationship assuming constant cross-section area and fix...

The aim of this study is to provide a clear and accessible method obtain accurate true-stress strain data, extend the limited material data beyond ultimate tensile strength (UTS) for AISI 304L. 304L used outer construction some types nuclear transport packages, due its post-yield ductility high failure strain. Material UTS throughout literature. 3D digital image correlation (DIC) was during ser...

Five recycled coarse aggregate (RCA) treatment techniques including flow-through carbonation, pressurized wet nano silica (NS) pre-spraying and combined carbonation with NS pre-spraying, were utilized to improve the performance of concrete (RAC). The characteristics stress–strain curves RACs peak stress, strain, elastic modulus, ultimate strain toughness evaluated after using above RCA techniqu...

The breaking stress (the maximum of the stress–strain curve) of neutron star crust is important for neutron star physics including pulsar glitches, emission of gravitational waves from static mountains and flares from star quakes. We perform many molecular dynamic simulations of the breaking stress at different coupling parameters (inverse temperatures) and strain rates. We describe our results...