نتایج جستجو برای: double hardening
تعداد نتایج: 251261 فیلتر نتایج به سال:
Microsoft Windows systems have been the favourite target of viruses, worms and spyware in recent years. Through a kernel level process, we can secure WindowsTMprocesses by running them in a form of a sandbox. These sandboxes are configured to only allow a subset of rights to be granted to the process, therefore limiting the ability of a rogue process or a compromised process to inflict damage o...
Abstraet--In this paper we present plane-stress crack-tip stress and strain fields for pressure-sensitive dilatant materials. A hydrostatic stress-dependent yield criterion and the normality flow rule are used to account for pressure-sensitive yielding and plastic dilatancy. The material hardening response is specified by a power-law relation. The plane-stress mode I singular fields are found i...
A novel double annealing process was applied to a Mn-TRIP steel. As result, great combination of yield strength 829MPa, tensile 1132MPa and total elongation 42.1% obtained. The improvement mechanical property contributed microstructure evolution. By process, ferrite grains were refined VC could effectively precipitate instead cementite, which the enhancement strength. Austenite fraction increas...
We present here an extension of the viscoplastic self-consistent (VPSC) polycrystal model for the calculation of the intergranular Cauchy stresses in an aggregate. This method, which is based on the self-consistent treatment of incompressible aggregates proposed in 1987 by Molinari et al, is formulated using the inclusion formalism and full anisotropy is incorporated into it. The complete stres...
INTRODUCTION Today's rapidly changing global political climate is significantly impacting the military strategies of Free World coun-triess Important decisions are being made regarding each country's defense and military equipment needss Regardless of these ongoing political changess howeverr the threat of nuclear weaponry use remains a viable possibilityy As long as a first-strike capability e...
The influence of harvesting date on some physicochemical properties of nectarine (Prunus persica var. Red gold) fruit including fruit weight, pigment content, total carbohydrate, total phenol and antioxidant activity were studied. Fruits were harvested in four different stages; a) two weeks after fruit set, b) pit hardening, c) three weeks after pit hardening and 6 weeks after pit hardening. Re...
Ensuring the radiation hardness of PbWO4 crystals was one of the main priorities during the construction of the electromagnetic calorimeter of the CMS experiment at CERN. The production on an industrial scale of radiation hard crystals and their certification over a period of several years represented a difficult challenge both for CMS and for the crystal suppliers. The present article reviews ...
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