Time-dependent creep stress redistribution analysis of thick-walled FGM spheres subjected to an internal pressure and a uniform temperature field is investigated. The material creep and mechanical properties through the radial graded direction are assumed to obey the simple power-law variation throughout the thickness. Total strains are assumed to be the sum of elastic, thermal and creep strain...

in this study, the effects of nitrogen addition on the production of ultrafine/nano grained aisi 201l stainlesssteel by advanced thermo-mechanical process were investigated. cast samples were first homogenized at 1200 °c for 4 h, hot-rolled at 1100 °c and finally, solution-annealed at 1150 °c for 2.5 h. unidirectional and cross multipass cold rolling at 25 °c was carried out to 90% reduction in...

BACKGROUND Cost-effective production of industrially important enzymes is a key for their successful exploitation on industrial scale. Keeping in view the extensive industrial applications of lignin peroxidase (LiP), this study was performed to purify and characterize the LiP from an indigenous strain of Trametes versicolor IBL-04. Xerogel matrix enzyme immobilization technique was applied to i...

High temperature plastic flow properties of two phase TiAl alloys containing 45 to 49 at.%Al have been investigated in thermo-mechanically grain refined materials in order to clarify the favourable microstructure and chemical composition for TiAl based superplastic materials. Grain sizes of thermomechanical treated materials and their grain size stability during subsequent high temperature defo...

Development of self-compacting concrete (SCC) is a very desirable achievement in the reinforced (RC) structures for overcoming issues associated with many problems such as congestions steel reinforcement. This non-vibrating not affected by skill workers, and shape amount reinforcing bar arrangement structure. Due to high fluidity resisting power SCC, it can be pumped longer distances. In this s...

A numerical code has been developed to model the complex behavior of woven fabric panels subjected to ballistic impact. The code has the ability to model multiple-layer fabric panels, multiple projectile geometries, and fabric imperfections such as yarn slippage at crossovers and also at clamps. A discussion of the numerical methodology is presented, along with the results of numerical simulati...

The goal of this research is to better understand the stress-strain behaviour plain and fibre reinforced M30 grade SCC mixtures. experimental stress strain relationship revealed that all changes had a minor effect on curve's first section. FRSCC mixtures has improved with addition fibres, resulting in lower values for same stresses. At peak loads, mixes, notably SFRSCC HFRSCC showed an increase...