In this paper the effect of different hardening models in simulating the U-bending process for AA5754-O and DP-Steel, taking a benchmark of NUMISHEET 93 2-D draw bending, has been discussed. The hardening models considered in simulations are: isotropic hardening, pure (linear) kinematic hardening and combined (nonlinear kinematic) hardening. The influence of hardening models on predicting sprin...

The experiments reported in this paper indicate that a pure culture of a virulent Type I pneumococcus as transferred under ordinary conditions is made up of individuals which are not identical in virulence for animals,-in bile solubility, or in their power to multiply under unfavorable conditions. By mechanical analysis alone no avirulent strains were obtained from the virulent strain, but one,...

The fatigue limit under a pure shear loading is very complex to determine for thin sheet materials. In this paper, two new specimen geometries are proposed assess the condition using self-heating measurements isotropic material. Both disc-shaped with particular designs promote homogeneous stress field. Strain gauge confirmed that applied strain fields correspond condition. thermal were imaged b...

Mn doped ZnO nanocrystals were prepared by co-precipitation route sintered at 450 °C temperature. XRD results indicate that the samples having hexagonal (wurtzite) structure. From X-ray data it is found that the lattice parameters increase with increasing Mn concentration. The X-ray density decreases with increasing Mn concentration of Zn 1-x Mnx O nanocrystals. It indicates that the Mn...

Circular simple shear extrusion process was introduced as a new geometry for simple shear extrusion technique to fabricate ultrafine-grained materials. Similar to the simple shear extrusion method, this process is also based on direct extrusion, and the samples deform in a simple shear manner. In this investigation, the simulations were carried out using the commercial finite element code ABAQU...

Samples of 99.9% pure, as-cast magnesium (Mg) were processed by Equal Channel Angular Extrusion (ECAE) using up to four passes the BC route, a temperature 250 °C, and three different extrusion rates 0.127, 0.381, 0.762 mm/s. The microstructures textures resulting samples characterized Electron Backscatter Diffraction (EBSD) as function pass rate. average grain size was reduced significantly app...

We introduce a new particle shape which shows preferential rotation in three dimensional homogeneous isotropic turbulence. We call these particles chiral dipoles because they consist of a rod with two helices of opposite handedness, one at each end. 3D printing is used to fabricate these particles with a length in the inertial range and their rotations are tracked in a turbulent flow between os...

Vibrio vulnificus is a leading cause of seafood-related deaths in the United States. Sequence variations in the virulence-correlated gene (vcg) have been used to distinguish between clinical and environmental V. vulnificus strains, with a strong association between clinical ones and the C sequence variant (vcgC). In this study, vcgC was selected as the target to design a loop-mediated isotherma...

A pure bacterial strain capable of aerobic biodegradation of fluorobenzene (FB) as the sole carbon and energy source was isolated by selective enrichment from sediments collected from a polluted site. 16S rRNA and fatty acid analyses support that strain F11 belongs to a novel genus within the alpha-2 subgroup of the Proteobacteria, possibly within a new clade related to the order Rhizobiales. I...