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In the present study, mechanical properties and fracture toughness of two cast A356 alloys were measured, and effects of eutectic Si particles on mechanical properties and fracture toughness were investigated.
Tensile Properties and Fracture Toughness.
Thus, the CF alloy shows the excellent overall mechanical properties including strength, elongation, and fracture toughness over the RC alloy.
Consequently, the CF alloy has more excellent mechanical properties including higher hardness, strength, elongation, and fracture toughness than the RC alloy
Therefore, the CF alloy had superior mechanical properties including hardness, strength, elongation, and fracture toughness to those of the RC alloy.

Multi-body Dynamics Model of Crankshaft System During the work process of the crankshaft system, the compliances of the crankshaft has an impact on the other components, thereby, the force state of the crankshaft will be affected.
The solid model of the crankshaft is imported into ANSYS software, and the unit type and the mass property are set properly.
So the dynamic enhancement factor λd and dynamic load factor c are introduced for correcting nσ
Journal of Mechanical Engineering. 46 (2010) 86-91
Journal of Mechanical Engineering. 47 (2011) 40-58．

Micromechanical damage simulation to obtain effect of coarse grains distribution on mechanical properties of bimodal AL using 2D XFEM H.
These analyses are used to predict and investigate the effect of coarse grain distribution on the mechanical properties such as global stress-strain behavior and pattern of crack growths for bulk metal.
Microstructural model preparation Material properties.
For material assignment, the material properties achieved from experiments containing 100% CG and UFG were used respectively.
By examining these three RVEs, one can discover the role of coarse grains in improving the material properties.

Introduction Pervaporation membrane is of crucial importance for successful pervaporation separation technologies, and it could directly affect solution separation effect and equipment investment.
The PIC membrane displays excellent mechanical properties, and its permeability for water, and other water-soluble small molecule solutes is high, so it has been regarded as a promising membrane and becomes one of the research focuses.
However, the preparation process of membrane is complicated and obtained membrane is not homogeneous, which affects separation efficiency directly[5].
These properties will overcome the deficiency of PIC membrane.
It is noticed that the value of separation factor and permeate flux of PVAMC membrane increased obviously compared to QACPVA/CMAPVA, and the PVAMC membranes had the high temperature resisance property.

This can be achieved by the use of very dense, strong and durable concrete, qualified and reliable evaluation and the use of its potential, which requires a deep knowledge of concrete, its properties and the ways to significantly improve the strength characteristics and durability.
The formation of crystalline intergrowths in the cement stone depends on the characteristics of the crystal structure of the fusion crystals, the composition and properties of the aqueous solution, the orientation of the crystals, the force of their compression between themselves and other factors.
As a result, there is a very large contact defective surface, extremely negatively affecting its strength in the process of their accretion in the cement stone.
For the macrostructure of concrete, there is a large heterogeneity in density, composition of components in microvolumes, their physical and mechanical properties, chemical and mineralogical composition, size and shape, adhesion.
This also contributes to the occurrence of a non-uniform stress field in the structure of concrete due to a significant difference in the physical and mechanical properties of the components.

Welded joints must ensure suitable operational properties, mainly in terms of creep, so that the repaired casting can work under the same conditions as the correct cast.
An important factor determining the plausibility of the application of welding techniques for repairing or joining cast magnesium alloys is the structural stability and the stability of the properties of the joint in operating conditions, that should be similar to the properties of the native material [3,4].
Chemical composition and properties of the QE22 alloy Chemical composition of QE22 alloy [% mas.]
Consequently in the process of development of gaps and micricracks on the grain boundaries they form the main crack · after the process of welding of the casts of QE22 alloy, thermal treatment should be performed (supersaturation and ageing, T6) in order to solve the eutectic areas and improve and homogenize the mechanical properties of the entire cast.
Kiełbus, Structure and mechanical properties of casting MSR – B magnesium alloy, Journal of AMME, 18/1–2 (2006) 131-134

The test results indicated that the fatigue properties of two splice joints met the design requirements.
Introduction Orthotropic steel decks (OSDs) have been applied widely in modern large and medium span cable-braced bridges because of its prominent mechanical properties, and fast and convenient manufacturing.
According to statistical analysis of fatigue damage types, the trough splice joints as one of several kinds of major constructional details, which approximately accounted for 6.3 percent of total fracture cracks[3,4], was one of the key factors affecting the fatigue properties of OSDs.
The survey data showed that the unreasonable design of structure details and quality flaws of welded joints production were two major factors leading to the fatigue of OSDs.
Load case 2: The validation tests of fatigue damage properties during design lifetime.

Furthermore, with non-brush pressure reduction, the system boasts a fairly low speed and the mechanical properties of being hard.
Non-linear factors are less and parameters can be easily set.
Installing the grating ruler on the actuators workbench and constituting the full closed-loop position servo system, the possible clearance of mechanical transmission chain, friction, stiffness and other nonlinear factors affect the stability of the motor run [1].
At the same time, the position loop within the object properties of nonlinear and many disturbance factors so the position regulator should have strong robustness.
Mechanical industry publishing house, 1999

We investigated in this study the thermo-mechanical behavior of PET-ITO substrate using a thermo-mechanical analyzer (TMA) in order to analyze thermal strain with varying temperature.
Many studies have been more focused on the subjects such as ITO deposition process or ITO crack propagation rather than thermo-mechanical behavior of ITO layer on PET substrate, where the thermo-physical properties of PET-ITO substrate are main key factor for decreasing failure cost of roll-to-roll process.
Anisotropic behavior of bare PET is an intrinsic property.
As the results, it was thought to be that the CTE of bare PET and PET-ITO substrate were affected dominantly by the thermal behavior of PET.
[4] S.Y Kwon, "Surface morphology and electical properties of ITO thin films fabricated by RF magnetron sputtering method", J.

Among the various road repair technologies, overlay asphalt above crashed slab has been increasingly paid close attention by engineer. as the size of broken cement concrete slab is reduced in this repair methods, the shrinking displacement reduced greatly as temperature falls and Thus also reduces the overlay tensile stress, these reductions can effectively prevent and eliminate the reflection crack of overlay; Meanwhile, the deflection quantity and deflection sent of joints and fissures on both sides of the slab also reduced because of the lower plate size which can greatly improve pavement structure reliability and durability; However, the crushing also reduces the old cement concrete slab stiffness which make the characters of broken concrete layer between the flexible and semi-rigid, and so the graded properties and stability of the crashed layer is hard to control and its stress-strain characteristic is also different with general elastic layered pavement system[1-2].
Because of the above reasons, to correctly understand the material characteristics of crashed layer and its comprehensive mechanical response with overlay will conduct the designer to design reasonable overlay and builder to make scientific treatment.
Reliability analysis theory According to the definition of Unified standard of reliability design of highway engineering structures ,it takes the randomness and instability of influence factors such as traffic, material strength of structure layer, modulus, thickness, construction condition and climate into consideration which will affect the pavement structure design and evaluation and use the whole or part failure probability to measure the reliability of the asphalt pavement structure, that can reflects actual working condition of pavement structure more objectively[6].
This paper combined the existing traditional JC method with finite element program and take advantage of characteristic that modulus is expressed by explicit function in finite element program, and then embedded the basic formula of JC method into finite element constitutive equations in order to calculate the mechanical response index which can derive the gradient of pavement structure function and finally get reliability index in order.
Table.1 Parameters of the calculate model structure layer parameters after overlaying modulus(Mpa) thickness(m) Poisson ratio variation coefficient range deflection allowance (0.01mm) overlay 1100 0.2 0.25 0.1～0.4 30 crashed layer 275 0.23 0.4 0.1～0.45 25 base 1200 0.25 0.25 0.1～0.4 15 Soil base 100 6.0 0.4 0.1～0.3 — (2) Calculation results analysis ① The influence of modulus of crashed layer and overlay to deflection and bottom stress Fig.2 Bottom stress versus elastic modulus Fig.3 Deflection versus elastic modulus Mechanical properties of crashed layer is one of key factors that effect the quality and service life pavement of overlaid pavement, Analysis results found that as the modulus of old cement concrete crashed slab increases, the deflection and bottom stress are gradually decrease (as shown in Fig.2 and Fig.3), When modulus of crashed layer change from 175Mpa to 375Mpa, the deflection of asphalt layer reduced 13.6%, and the principal stress under