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Thus affect the working performance and service life.
The Influencing Factors of the Vibration of Woodworking Circular Saw Web The dynamic working stability of circular saw web referred to the condition of the saw web from the very beginning to the certain vibration frequency.
The inherent shape and stiffness properties in the saw cutting process of the saw web as well as its working condition were influenced by the diameter, thickness, chuck radius; thermal stress caused in the process of saw cutting and rotational speed.
The Design and Improvement of the Woodworking Circular Saw Web Although there was a chuck on the circular saw web, it could not completely offset the vibration caused by various factors.
Fig.3 Open the igs model According to the properties of the material, we input the values ​​of the parameters of size in Ansys12.0 set and meshing (Fig5, Fig6), the situation is solved according to the force of the wedge plate.

Origination and Properties of Dislocations in Thin Film Nitrides Horst P.
The mutual annihilation of threading dislocations is rather efficient although affected by the glide properties of the growing epitaxial crystal and the thermal stresses during the cooling down after growth.
In consequence, this concept of critical thickness and misfit strain relaxation by dislocation networks has mostly been used to describe and check the properties of respective systems a posteriori.
Even with the unsatisfactory state of the experiments we may evaluate some interesting aspects of misfit dislocation properties in the III-nitrides.
Unfortunately, a literature search for experimental details on the respective glide properties failed and makes the assessment of this relaxation type rather difficult.

The orthogonal test method is used to study the influence of three factors on the workability of concrete.
The factors are the proportion of iron mine tailing in the mixed sand, sand percent and the paste and aggregate ratio.
The results show that compared with sand percent and the paste and aggregate ratio, the proportion of mine tailing in the mixed sand is the main factor which affects the concrete workability.
The performances of concrete prepared by iron tailing mine sand are tested according to the national standards about concrete workability and mechanical property.
Water cement ratio (or water binder ratio) is the main factor that affects the concrete strength.

Thermoresistance is refers to the metal mechanical load resistance at high temperature [3].
Table 1 The activation energy of several elements Element Al Ti Ni Co Fe Cr Nb Ta Mo W Melting point (℃) 660 1668 1455 1495 1538 1857 2477 3017 2623 3422 heat-resistance temperature (℃) 200 ~ 300 500 ~ 600 700 ~ 800 700 ~ 800 900 ~ 1000 950 ~ 1050 1500 1800 activation energy (Kcal / molar) 38 58 60 65 59.7 (α-Fe) 67 (γ–Fe) 85 85 110 114 142 Due to the high temperature alloy has special physical properties and chemical properties, therefore, high temperature alloy cutting processability, worse than ordinary carbon steel and stainless steel.
High temperature alloy cutting temperature is very high, but it still has high mechanical properties (such as strength, hardness, etc.) at high temperatures.
Therefore, Mechanical properties of gap is reduced between the high temperature alloy workpiece and cutting tool materials at high temperature, and this tool will accelerate the heat adhesive wear.
These reasons lead to cutting tool mechanical wear large (behind the cutting tool abrasion maximum); it directly affects the cutting tools durability.

Study indicates: for the concrete lining with initial damages, under the repeated aerodynamic fatigue loads, the mechanical properties of the tunnel lining concrete will gradually deteriorate to the whole damage of the concrete structure, which will cause serious inference on the durability of the tunnel especially during the middle and later periods of the high-speed railway tunnel serving.
The material properties were shown in table 2.
The fatigue damage micromechanics properties at different cycling times was got by simulating the lining concrete with initial pores, as indicated in figure 3.
With the repetitive action of the aerodynamic fatigue loads, the new cracks will generate from the mortar or the concrete interface layer, the existing and the new interlace with one another to affect the mechanical properties of concrete adversely.
We can conclude that the aerodynamic loads resulting from the train operation have great influences on the durability of tunnel concrete structure, and the influences will increase with the joint action of the lapse of time and the unfavourable external factors.

Microstructure and Tensile Properties of Al Hybrid Composites Reinforced with SiC Whiskers and SiC Nanoparticles X.
Hybrid composites reinforced with ceramic whiskers and nanoparticles are expected to show excellent properties because the different reinforcements complemented each other in hybrid composites, especially improved some properties of singular reinforced composites[3-5].
Microstructure and properties change resulting from hot extrusion were investigated.
Tensile strength of the as extruded (SiCw+SiCp)/Al composite depends on various factors, such as whisker orientation and length, distribution and segregation of the nanoparticles, and strain 3µm (a) 3µm (b) 0.1µm (b) whisker 0.1µm (a) cluster hardening of the matrix alloy.
The segregation of the SiC nanoparticles is a decisive factor in determining the mechanical properties of the extruded composites.

The modifications should not affect the reliability and the characteristics of the connections.
Several previous researches reported specific factors that affect the reliability and the performances of the solar cells.
In such conditions, the phase Ag3Sn was formed, which proved the formation of the bond, and no mechanical or electrical damages were revealed.
He identified the galvanic corrosion as being the main factor for degradation of the cells.
Zhong, et. al., Mechanical properties of intermetallic compounds in solder joints, 11th Int.

ABAQUS can be done not only single components of the mechanical and multi-physical field analysis, but also can be done the complexity of system-level analysis and research at the same time.
High or low credibility of FEA results are directly affected by the analytical model, load handling, constraint conditions and the actual mechanical properties of engineering structures in line with the degree of impact, FEA model to establish when it is necessary to accurately reflect the actual structure of the important mechanical properties, but also less as far as possible the unit cell and simple form, in order to ensure higher accuracy and to reduce the scale of problem-solving.
This is generally taken to include geometric modeling, the definition of material properties and it is constant (according to the geometric properties of unit to set up, some units there is no real constant), the definition of cell type, mesh, add constraints and load, etc [3, 4].
The boundary constraints imposed whether it is reasonable will directly affect correctness and rationality of analysis results.
Therefore, the components strength lies in the size not merely the size, its structure quality is affects its strength and the rigidity extremely important factor.

Changchun: College of Geoexploration Science and Technology, Jilin University, 2009. ].Digital geophone-based MEMS (Micro Electron mechanical System) , which not only able to achieve the miniaturization of electronic components, while the surface etching technology to take advantage of MEMS technology comes mechanical appliances the three-dimensional structure of processing, and thus achieve the purpose of the miniaturization processing of mechanical devices.
Conventional VHF technology to the 3G technology affects the development of seismic instruments in different degrees.
In accordance with the requirements of the construction process, to use the communications equipment correctly to ensure seismic instruments in a different environment to avoid the unfavorable factors of communication, improve the utilization of the instrument and the purpose of reducing the failure.
Seismic Exploration Instrument Seismic exploration instrument is the core of the seismic data acquisition system and the key technologies of the acquisition system by seismic exploration instrument to reflect, it is based on the history of generations of seismic exploration instrument development of the basic characteristics, the analysis summarized replacement generally law and decision elements, and on this basis, combined with related technology development trend, and infer the key factors that affect the future development trend of seismic data acquisition system.
Thus, without considering the difference of the geophone, the current each acquisition system collection characteristics (technical index and acquisition ability) much the same, although in use characteristics (general physical properties) on each has its advantages but with no significant difference, which is the contemporary mainstream acquisition system comprehensive characteristics.

For the laser sintering process, a particular attention is paid to the description of the raw metal powder and the influence of process parameters on the microstructural and mechanical properties of the consolidated material.
Fig. 2 shows how the Vickers hardness varies across the brazed bond, confirming the fact that the steel microstructure is affected by the bond (see Fig. 3).
In fact, the main factor is the temperature profile.
The objective of the research is to understand the relationship between the microstructure of the consolidated materials and their mechanical and thermal properties.
Mechanical properties of the bulk sintered material.