The present study was carried out to investigate the effect of alloying elements and thermo-mechanical treatment (TMT) i.e. hot rolling and forging with different reduction ratios on the hardness (HV) and impact toughness (J) of heat-treated low alloy steels. An understanding of the combined effect of TMT and alloying elements and by measuring hardness, impact toughness, resulting from differen...

Vanadium dioxide (VO 2 ) undergoes semiconductor-metal phase transition (SMPT) at the ambient temperature. Due to this fact, it becomes perspective material for thermo sensors, thermo switchers, optical switchers and shutters, IR sensors, thermochromic coatings, smart coatings for glasses, holographic elements, and elements of energy-independent memory. By now, there is no doubt that the charac...

The aim of the work is to study stress-strain state reinforcing bars during bending and obtain appropriate formulas dependencies clarify possible boundaries use mandrels for reinforcement various classes diameters. object are used as transverse in design linear reinforced concrete elements. determines limits bars, where relative deformations steel do not go beyond yield strength. A formula obta...

ActorsOnlyRule(v:ACViewClass) ::= §o:ObjectClass· o∈v ∧o∈find_all_abstract_actors () Query22 find_all_abstract_actors()::= §a:SpecifiedActorElementClass· (a in AbstractActorElementClass) 5.2.5 Plain-Actors-Only view Informal description A Plain-Actors-Only view presents plain actors, their direct specified actors, and the “specifies” links that connect them. master-thesis-v4.4.doc 93/231 9/1/20...

To improve the durability of lead free solder joints under high strain rates, such as drop and shock loading, some area array manufacturers have converted to low silver (Ag) content tin silver copper (SAC) solder spheres instead of the commonly accepted SAC305 solder. While the lower silver content SAC solder joints may address high strain rate shock loads, the durability of these joints under ...

Most mushrooms are thermo-sensitive to temperatures over 23°C, which greatly restricts their agricultural cultivation. Understanding mushroom's innate heat-tolerance mechanisms may facilitate genetic improvements of their thermotolerance. Agaricus bisporus strain 02 is a relatively thermotolerant mushroom strain, while strain 8213 is quite thermo-sensitive. Here, we compared their responses at ...

In the present paper a fully coupled three-dimensional thermo-hygro-mechanical model for concrete is discussed and used in the numerical studies. The model is formulated in the framework of continuum mechanics based on the principles of irreversible thermodynamics. Distribution of moisture, pore pressure, temperature, stresses and strains are calculated by employing a three-dimensional transien...

This paper presents a simple method based on strain energy density criterion to study the crack initiation angle by finite element method under biaxial loading condition. The crack surface relative displacement method is used to eliminate the calculation of the stress intensity factors which are normally required. The analysis is performed using higher order four node quadrilateral element. The...

Substantiated mathematical model for non-stationary thermoelastic deformed media during their laser processing by short waves pulses fields analysis is proposed . Precise analytical solutions of the thermal conductivity equations which simulate interaction and allow to further determine components thermally stress-strain state processed materials, in particular, thin porous films, capillary-por...