Search results

Thus, this study was carried out with the purpose to identify the critical parameters that promote microstructural changes in the Ni-based superalloy and therefore affect the mechanical behavior in this turbine blade.
Introduction Nickel-based superalloys are widely used in severe service conditions because of maintain their mechanical properties even at high temperatures for prolonged periods of time and have a good resistance in corrosive environments [1].
So, this analysis took into account the service conditions of the blade [9] to calculate, with ANSYS software, distribution gradients of temperatures and normal stress on the surface and inside of the blade that modifying its internal structure and consequently its mechanical properties, hardness.
It is known that this structure is obtained as a result of the heat treatment in IN792 to improve mechanical properties in the superalloy [13].
Floreen, Metallurgical Factors Affecting the Crack Growth Resistance of a Superalloy, Metallurgical Transactions A. 8A (1977) 51-55

Nano B4Cp dispersion in Al matrix, microstructure and mechanical properties are investigated.
The magnesium metal matrix nanocomposite has better mechanical properties than the monolithic alloy.
The mechanical properties like ultimate strength and yield strength were considerably better.
Thus the composites have better mechanical properties than AZ91 alloy.
Conclusion This paper reviews the factors affecting the fabrication of aluminum and magnesium based nanocomposites by ultrasonic cavitation assisted casting process.

The particle size, total surface area and particle size distribution were factors affecting plaster properties used for construction.
In the present investigation, an attempt has been made to test the effect of particle size distribution of hemihydrate gypsum on some of physical and mechanical properties.
Physical properties and Chemical analysis of ordinary gypsum.
Plachy, Evolution of Mechanical Properties of Gypsum in Time, International Journal of Mechanics. 5 (2011)1-9
AL-Baghdady, Improving of Mechanical Properties for Juss mortar Using Vegetable and their Plants Fibers, Technology Journal (2010)

The influence of sintering temperature on the mechanical properties of ceramics, especially cracking resistance, was studied.
The effect of the particle size of powders [10], porosity [11], and temperature [12] on the mechanical properties was studied.
Running-in is one of the important indicators of the tribological properties of materials, during which optimization of the micro geometry and physico-mechanical properties of the surface layers of the contacting materials occurs.
Mechanical properties of ceramic composition ZrO2-3 mol.% Y2O3.
Tribological parameters are influenced by three groups of factors: values that determine the level of external influence on the tribosystem: p - contact pressure, sliding speed, temperature; physical and mechanical properties of materials, of which the most important are the quantities that determine the properties of the surface layers of the contacting materials: elastic modulus E, hardness H, and for brittle materials such as ceramics - stress intensity factor K1c; micro geometry of friction surfaces.

walter@dfi.uem.br and wilson@dfi.uem.br Key words: composite, biomaterial, sinterability, physical-mechanical property.
This factor is an obstacle in implants that must support high loads [1, 2].
Current study describes the preparation and the characterization, evaluates the possible sintering temperature effect on sinterability, microstructure and physical-mechanical properties of the titanium-hydroxyapatite composites obtained by mechanical alloying (MA), followed by sintering.
In addition, sintering temperature provides a development in porosity, which affects the composites' physical and mechanical properties.
Conclusion Results and analyses carried in current research lead to conclusions related to the composites' microstructure and to the influence of sintering temperature in physical and mechanical properties

They found that the temperature dependence of the material properties affects the thermal buckling and postbuckling characteristic of symmetrically laminated beams.
The specimens were tested to measure the mechanical properties at various temperature levels; -20 to 70°C.
The safety factor for the whole HVAC system is smaller of the safety factors of lower and upper parts.
However, because the ultimate strength also decreases with temperature, the safety factors are 2.96 and 2.54 with temperature-dependent and constant materials properties, respectively.
Wang, Mechanical properties of foamed concrete exposed to high temperature, Vol. 26, No. 1 (2012) 638-654

It indicates that the anisotropy of thermo-hydro-mechanical behavior of the argillite rock is the main factor affecting temperature distribution，pore pressure and stress fields.The results make clear that the differences of coupling action and uncoupling action are obvious and the effects of coupling cannot be ignored.
Temperature increment of the nuclear waste stores the storehouse adjacent formation medium, not only shades clinkstone body, water body physical property, but also to moreover infiltrates the flow field to the crag body stress field and the water body have the vital role; At the same time, the ground water takes one kind of environmental factors, has the important influence to the crag body physics mechanical properties and heat transmission.
The ore deposit of the crag stone joint principle surface has the very tremendous influence to leads the water performance influence and rock mechanical properties of mineral chemistry reaction.
Influence nuclear waste dynamics factor and mechanism Consideration from the nuclear waste in-depth geology handles, Thermal, Hydrological and Mechanical are three important constituent in the crag body physics geology environment.
Thermal Hydrological Mechanical Heat flow duo to thermal gradient convection thermal stress Swelling pressure Mechanical Energy conversion Change in permeability Fig 1.

The cutting speed and tempering hardness is the two main factors affecting adiabatic shear, in the case of lower cutting speed the formation and development of adiabatic shear band are more sensitive to tempered hardness increase.
Common metals and their alloys, such as carbon steel, aluminum and alloy steel, when they are machined under the conventional cutting speed range, it can produce continuous ribbon band chip because these materials have high plasticity and good thermal properties.
These indicate that adiabatic shear is more sensitive to the cutting speed and rake angle which are the main factors affecting the formation and development of ASB.
The cutting speed is the main factor affecting this transformation
(2)The hardness of workpiece material is also one of the main factors affecting the adiabatic shear.

Mechanical Properties and Thermal Stability of TiO2 Nanofiller Reinforced Silicone Sealants Ananda Manuela S.
The effect of titanium dioxide (TiO2) nanofillers on the mechanical and thermal properties of commercially available silicone-based sealants was investigated.
Despite the excellent properties inherent to silicones sealants, it was found that plasticizers migrate out of the material that can cause staining in the adjacent surfaces and negatively affecting the aesthetics of the building.
Conclusion The TiO2 nanofiller enhanced the mechanical properties of the commercial silicone sealants only at around 1% to 2% wt.
Seetharamu, Cure characterisitcs, mechanical and thermal properties of Al2O3 and ZnO reinforced silicone rubber, Polym-Plast.

The electrochemical manufacturing processes are applied in the case of workpieces made of metallic materials, able to be affected by electrochemical reactions in contact with the electrolyte used as work liquid; it is useful that in comparison with other machining methods, the mechanical and usually the physical properties of the workpiece material do not influence the characteristics of the electrochemical machining process or this influence is very low.
Components of the electrochemical machining equipment, necessary to develop an electrochemical machining process: a) schematic representation of the components necessary to develop an electrochemical machining process’ b) detail from the work zone Due to the fact that usually the electrochemical machining processes does not affect thermally and mechanically the properties of workpiece surface layer and to the possibilities to apply the electrochemical machining process in case of micromanufacturing, the electrochemical machining methods constituted a research objective for many researchers.
Main components of the equipment for the study of electrochemical machining process On the results of the electrochemical machining process, many factors (input factors) exert influence; these factors could be considered as included in some groups: Fig. 4.
The results of a systemic analysis of the above mentioned factors and parameters concerning the electrochemical machining process are presented in Fig. 2.
In the future, there is the intention to develop an experimental research, in order to highlight the influence exerted by various factors on the values of the parameters of technological interest.