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Introduction The accuracy and dimensional stability of dental impression materials are important factors in a fit of dental castings with abutment teeth.
Filler contents and compositions are affected in mechanical properties of hydrophilic addition silicone impression materials.
When the content of silica increased, consistency should be fall off, nevertheless the mechanical properties improved.
In order to improve the mechanical properties of MAS glass, calcium is replaced magnesium with various molar ratio.
Silane-treated filler did not represented any improved properties than before silane-treatment.

A lot of effort was invested to determine the factors which affect the cellular structure and cell size of the resulting porous polymers, and in 1997, Neil R.
Their mechanical properties are similar to gas-blown polystyrene foams, although the smaller cell sizes and higher degree of cellular spherical symmetry of the emulsion-derived foams produces higher compressive strengths.
In year 2009, Pakeyangkoon and co-worker demonstrated that the incorporation of layered silicate in the polymer matrix lead to improving not only mechanical properties but also the surface properties and thermal stability of the PolyHIPEs materials [13].
The obtained PolyHIPEs were also characterized for phase morphology, thermal behavior, mechanical properties, surface area and CO2 adsorption capacities.
The optimum load content of MAPES that does not decrease mechanical properties (compressive modulus and compressive strength) and destroy morphology is 10 %wt MAPES.

This result indicates that the binding energy between dopant and oxygen vacancy affects the phase stability as well as the change in the axial ratio, c/a.
Microcracking leads to a decrease of the mechanical properties; this could explain the failure of implants after several years in vivo.
Another factor must be considered to explain this trend. 1.016 1.018 1.020 20 40 60 80 100 Axial Ratio, c/a Monoclinic Fraction (%) Fig.2 Relationship between axial ratio, c/a and monoclinic fraction after the accelerated exposure tests in hot water at 413K for 60h.
Since the distance is inversely related to the binding energy in general, this result possibly suggests that the binding energy between dopant and oxygen vacancy affects the phase stability as well as the axial ratio, c/a.
The ion radius of dopant must be an important factor for the phase stability of TZP

Based on the experimental results, the morphology and mechanical properties of modified soil will not be affected under the dynamic load of earthquake and traffic.
There is a dynamical equilibrium between salt solution and soil particles with the external conditions (for example, temperature, moisture and other factors)[1].
In recent years, with the development of coastal highway and large transport vehicles, studying on the mechanical property of road-bed modified carrier is important at the district of strong salinization.
Dynamic triaxial test is a important methods and means of studying on mechanical characteristics of soil, for the reason of dynamic tri-axial test can be better to simulate the soil variation law under the dynamic loading.

The paper investigates the optical and photocatalytic properties of strontium bismuthate doped with various rare earth elements.
The promising application of bismuthates of alkaline earth metals in this area is due to a number of factors.
Woodward, Optical and electrical properties of the wide gap, n-type semiconductors: ZnBi2O6 and MgBi2O6, Chem.
Hu, Electronic, Optical, Mechanical and Lattice Dynamical Properties of MgBi2O6: A First-Principles Study 9 (2019) 1267
You, Hydrothermal synthesis of Ca3Bi8O15 rods and their visible light photocatalytic properties, Mat.

The electrohydraulic control system replaces the traditional mechanism driven by the mechanical cam to simplify the engine’s design, reduce the cost, and optimize the operating control.
The consistency of the theoretical analyses and the experimental results is the key factors affecting the components’ design.
Combined with the fatigue reliability theory, the fatigue life and safety factor of the body can be evaluated quantitatively.
Thermal and Mechanical Fatigue Analysis for Cylinder Head-Piston The cylinder head-piston in the diesel engine’s working process, not only bears the mechanical load caused by the explosion pressure, but also the alternating heat load caused by the by the combustion.
The stress distribution and high-cycle fatigue characteristics of the cylinder head and piston are studied under the joint action of the mechanical and thermal loads.

The main cause of the failures has been determined as the wearing-out of the shoe surface, and the parameters that most sensitively affect life have been reported to be pressure, speed, temperature, contamination and others 1) .
However, a combined accelerated life test model taking other factors such as speed and temperature into consideration has not yet been developed.
      = −− kT E VPt A n m n T f exp φ (4) G 2.2.3 Accelerated Factor Generally, the AF (Acceleration Factor) of the test is expressed as Eq.(5). )( )( testt fieldt AF f f = (5) When the failure time is substituted into the acceleration factor, it is as shown in Eq.(6), and when it is expressed algebraically
[MPa] Rated speed 2000 [rpm] Orif ice Land Ball Shoe Swash Plate Rec ess Piston Tilting Angle Rated temperature 50 [�] Fig. 1 Structure of Piston Assembly Pressure sensors with similar specifications were installed to the valve manifold and the highpressure pipe to measure the test pressure. 2.4 Test method In order to check life and acceleration properties, the rated condition of the piston assembly was set according to the actual specifications of the HST.
An identical shape parameter of the failure data means that the failure distribution is identical, affecting the acceleration relationship4) .

Ozben et al. [2] investigated the effects of the reinforcement fraction on the mechanical properties like hardness and tensile strength of the Al/SiCp composite.
The most influential factors affecting the surface finish and forces acting on the tool were studied by conducting a set of experiments.
The general properties of the coating applied in our case are shown in Table 14.
Table 14: Properties of hyperlox S.
Properties Description 1.

The effects of three factors, the welding temperature, the thickness of the intermediate layer Cu foil and the welding pressure, on the stress distribution of the AZ31B/Cu/LY12 joint were studied.
The existence of residual stress directly influences the mechanical properties of welded joint, and even leads to the failure of the joint in the process of cooling or shortly after the cooling.
Therefore, it was an effective way to improve the performance of AZ31B/Cu/LY12 diffusion brazing joints by analyzing the stress of the joints and then find out the factors that affect the stress of the joints.
Since temperature gradient was large in the process of AZ31B / LY12 diffusion brazing welding, the change of material was non-linear, in the definition of material properties, performance parameters at different temperatures were required.
Influencing Factors of the Stress Distribution of AZ31B Magnesium Alloy / LY12 Aluminum Alloy Joint The Influence of Welding Temperature on the Stress Distribution.

Several factors affect on residual stress relaxation such as amount of stress, stress relief time, relaxation temperature and metallurgical behavior of phase at PWHT temperature.
Material Properties.
The thermal, physical and mechanical properties of the metal have been taken from [2] and are shown in Table-1 and Table-2.
Assuming these properties as a function of temperature increases the accuracy of simulation.
Chao, Effects of temperature-dependent material properties on welding Simulation, Comput.