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According to the experimental results, it is found that joint strength was not linear with the adherend thickness and much affected by spew fillets in overlap ends.
Material properties and model.
The mechanical properties of the adherends are E11=134GPa, E22/E33=9.6GPa, γ12/γ13=0.29, γ23=0.3, G12/G13=4.8GPa and G23=5GPa.
The mechanical properties of adhesive are E=2.3GPa and γ=0.3.
Therefore, it is the main factor that peel/shear stress concentrations at overlap region ends affect the joint strength.

By application of RS technique the beneficial structural modifications can be induced giving an improvement of mechanical properties of the materials.
Mechanical properties of the as-extruded materials were tested at 298-823 K by means of the compression test performed at constant true strain rate.
Sugamata, Microstructure and mechanical properties of rapidly solidified Al-Fe-Ni-Mg alloys, Mat.
Hono, Microstructure and mechanical properties of bulk nanocrystalline Al–Fe alloy processed by mechanical alloying and spark plasma sintering, Acta Mat. 57 (2009) 3529-3538
Sugamata, Effect of magnesium addition and rapid solidification procedure on structure and mechanical properties of Al-Co alloy, Arch.

Optical path difference affects the distribution of the interference pattern directly, and the light interference pattern gives information of phase and amplitude in turn.
Introduction With the development of science and technology, people has realized the optical properties more and more deeply.
When interference of the Coherent light takes place, correspondence of optical path difference and stripes have been analyzed between the qualitative and quantitative, which will be the difficult quantity of measure into observed stripes changes, and the indirect measurement can characterize the physical quantity of material properties, such as wavelength and refractive index.
Namely, the wave nature of the incident object changes with mechanical objects, added value is
At the same time, the spatial and temporal coherence of light is given to improve the factors of measurement accuracy, Not only we should pay attention to matters in the measurement, but also it is people's research direction in the future .

The results show that, the crack is initiated from heat affected zone (HAZ) of the rail web.
Besides, the nonmetallic inclusions and defects in the rail steel are main influencing factors of rail life [7-8].
From Fig.1(d), the microstructure around the hole is mainly composed of pearlite and ferrite, which indicate the crack was initialed from heat affect zone (HAZ).
Effect of flashing and upset sequences on microstructure, hardness, and tensile properties of welded structural steel joint.
Influence of Nonmetallic Inclusion Characteristics on the Mechanical Properties of Rail Steel.

The main factor that influences the processing efficiency of CNC vertical lathe is hydrostatic thrust bearing speed.
Then the hydrostatic thrust bearing temperature field distribution and lubricating properties were obtained with the use of computational fluid dynamics (CFD) theory and the finite volume method combined with the segregated solver of FLUENT.
In this paper, on the basis of the above research, the influence factors of bearing thermal stability and thermal deformation were analyzed and the internal flow law of hydrostatic bearing was revealed with knowledge of fluid dynamics and tribology.
Factors of lubrication performance but for large scale constant flow oil pad open static bearing wheel bearing lubrication mechanism is quite complex, so the study on large scale constant flow oil pad open hydrostatic bearings must first from the mechanical properties and the oil film state analysis.
In this paper the quantitative oil supply by engineering the oil return groove circular guide hydrostatic thrust bearing as the research object, research the fan-shaped cavity flow, oil film, bearing capacity, stiffness, friction force and friction power and other mechanical properties.

Let KIx01 and KIIx01 be the stress intensity factors of the branch crack tip.
With Eq.3, KIx01 and KIIx01 are [4], , (4) Where, KIx1 and KIIx1 are stress intensity factors of I and II models of the main crack in the clad respectively.
Let KIx02 and KIIx02 be the stress intensity factors of the branch crack tip.
Secondly, bring the calculated stress intensity factors of the interface crack into Eq.7 and 8, the parameters of Gx1max and Gx2max can be obtained separately.
Shandong University, 2002) (in Chinese) [7] Edit Committee of Handbook of Property Data of Materials for Mechanical Engineering: Handbook of Property Data of Materials for Mechanical Engineering (Mechanical Industry Press, China 1995) (in Chinese) [8] F.T.

While the fatigue life was badly affected by the loading paths.
While, aluminum alloys are widely used in the industry for the reason of their superior mechanical properties such as low density, high strength-to-weight ratio, good corrosion resistance excellent weldability and deformability [2] In recent years, most research on aluminum alloys have focused on their fatigue property under different loading conditions.
Microstructural and Mechanical Properties of Walking Friction Stir Spot Welded AA 6061-T6 Sheets[J].
A rationalization of factors affecting strength, ductility and toughness of AA6061-type Al–Mg–Si–(Cu) alloys[J].
Strain-Controlled Low-Cycle Fatigue Properties of Extruded 6061-T6 Aluminum Alloy[J].

The results of aging properties after boiled and UV light treatment show that bonding properties of PVC wood-plastic composite materials glued with two adhesive were both degraded after aging，but bonding properties glued with epoxy adhesive was better than acrylic ester adhesive.
WPC has advantages of both wood and plastic's properties.
Results and discussion Basic Properties (1)Adhesion Properties.J-39 adhesive is a two-component room temperature fast-curing acrylic ester adhesive [12].
Weathering of adhesive joints test For the products used in wet conditions, in order to ensure its long-term use, we need to examine bonding durability of bonding material, which are caused by water and environmental factors [13].
References [1] CHEN Zhi-xiu: PVC wood-plastic composite material properties and application.

Random vibration is one of the main factors influencing the reliability of electrical connectors.
However, the reliability of an electrical connector is affected by a lot of environmental factors, such as temperature, vibration, shock, drop or plug, etc.
In the model, we have established a database of contacts material properties such as density, Young’s modulus, Poisson’s ratio, etc.
Their material properties are shown in Table 1.
Table 1: Material properties Material properties Density [Kg/m3] Young's Modulus [Pa] Poisson's Ratio Plain carbon steel 8000 8.8E+10 0.30 Hard rubber 1100 2E+9 0.39 Sn-Ag-Cu solder joints 7400 4.84E+10 0.35 Copper wire 8800 1.12E+11 0.33 After parameters were defined and materials were added, we meshed the model which had 10460 elements and 22603 nodes.

The purpose of the work is to develop composite materials for light shockproof protective structures and to determine the nature of the packaging, the features of the structure and the level of their physical and mechanical properties.
Traditionally, this problem was solved by using protective means based on steel materials, which were modified for new factors [15, 16].
A distinctive feature of any structural material is that it preserves the specific individual properties of the layers and at the same time it can have new properties inherent only to it.
Achieving the appropriate effect is possible thanks to the use of materials with special normalized mechanical properties, which can be realized in sufficiently thick layers.
These factors complicate the structure and increase the cost of manufacturing, which is economically impractical.