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Table 1 lists the physical property of micro V-groove materials used.
Stress from unmatched CTE can be an important factor affecting the performance and reliability of optoelectronic device.
Stress from unmatched CTE can be an important factor affecting the performance and reliability of optoelectronic device.
Material will be fracture damage when affordable load exceeds elastic limit, and affects surface quality and devices performances.
Furthermore, the distribution (homogeneity and height) of the wear particles and bond will affect the machining quality.

The article is devoted to studying the rheological properties of metals and alloys in a cold state based on the results of tensile tests of cylindrical specimens.
Introduction Tensile testing is one of the most widely used methods for studying the properties of metals and alloys [1].
However, according to the results of tensile tests, the dependence of flow stresses on the strain, which characterizes the rheological properties of materials [2, 3], can be also determined.
Note that the elongation values are influenced by many factors during testing.
The length of the working part of the specimen also affects the elongation values.

In normal weight concrete, the aggregate strength is not a factor affecting concrete strength because the aggregate is much stronger than the matrix and the transition zone.
The concrete mixture and its measured mechanical properties are shown in Tables 1 and 2, respectively.
The mechanical properties of reinforcement are shown in Table 3.
Compressive strength [Mpa] Splitting strength [Mpa] Elastic modulus [Mpa] Dry performance density [kg/m3] 32.1 4.5 1.95×10 4 1744 Table 2 Mechanical property of RLAC.
Mechanical properties of the reinforcing bar.

Many factors affect the accuracy of bending springback; the fluctuation of material performance and technological condition can also cause larger springback value of bending parts, even though the trademark and the batch of the material are both the same.
The blue print of intelligent control system of cap-shape bending After the theoretical calculation, the numerical simulation and the experimental study, we know that many factors may account for the springback of cap-shape bending.
We selected four kinds of plates: H62 brass, 5754M aluminum plate, 08Al steel plate (the true value of the material properties is obtained by the tensile test), select 220 sample date form experimental and simulation results.
Figures 3 and 4, respectively, show the results that compare the material properties obtained by random sampling from participating in the training sample data with the true value of ST12 steel plate and H62 brass.
(2) The real-time identification of the friction coefficient and the material properties were studied.

These materials generally possess many unique properties such as high tensile strength, and fairly large plasticity at low temperature.
Regarding the fatigue on ECAPed UFG materials, most studies [1-4] have concentrated on cyclic deformation, S-N properties, formation mechanism of shear bands and underlying microstructural mechanisms.
The mechanical properties for CG and UFG samples were 232 and 438 MPa tensile strength, 65 and 13.5 % elongation, and Vickers hardness of 63 and 131 (load: 2.9 N), respectively.
The round-bar fatigue specimens (5 mm diameter) were electrolytically polished prior to mechanical testing to remove any preparation-affected surface layer.
the relationship between the reversible plastic zone (RPZ) size at the crack tip and microstructural factors for analyzing the growth mechanism of small cracks.

The experiment result shows that the tri-modal microstructure could obtain high damage tolerance properties of titanium alloy in theory.
As heat preservation prolonged, grain will be distributed uniformly in the alloy, grain surface tension will decrease, making a stable state for grain, and the influence of dynamic factors will also decrease gradually.
(3) The tri-modal microstructure could meet high damage for tolerance properties of titanium alloy in theory.
Effect of Treatment on the Microstructure and Properties of TC18 Titanium Alloy Wire.
The relationship of heat treatment-microstructures-mechanical properties of the TC18 titanium alloy.

Like other pozzolanic materials, replacement of cement by natural zeolite can improve the mechanical properties of cement and concrete composites.
The optimization of multi-component cements CEM II/B-M containing 65 mass.% CEM I 42,5R and 35 mass.% of mineral additives was determined due to plan of two-factor three-level experiment.
This in turn affects the ultimate compressive strength, the permeability and chemical durability of quaternary zeolite-containing Portland-composite cements significantly.
The lowering clinker factor ratio in CEM II/B-M (S-P-L) 32,5 R reduces the CO2 discharge in the cement production process 1.46 times/ 1 ton cement.
Conclusion The rheological properties of the strength development of Portland-composite cement CEM II/B-M (S-P-L) improve and its density increase due to the following factors: 1) the optimization of the particle size distribution of the constituents using the values of incremental coefficient of surface activity, 2) the effect of the hydraulic properties of the GBFS combined with the pozzolanic action of the zeolitic tuff, 3) the filling effect of the finely dispersed limestone powder, 4) the reduction in the clinker factor.

Introduction Carbon fiber reinforced polymer (CFRP) has make an interest worldwide for its lightweight and excellent engineering properties in the form of high modulus and high strength fiber.
Nowadays modern CFRP are made up by composite engineered materials that made from two or more constituent materials with significantly different physical or chemical properties which remain separate and distinct on a macroscopic level within the finished structure [1].
Dry machining conditions were employed due to the effect of coolant to the properties of the CFRP.
Delamination Factor, Fd.
The value of delamination factor (Fd) can be calculated by using Eq.1.

The properties that are characteristic to the nanoscale include: 1.
Polymer nanocomposites properties are determined with complex operation of variety factors, such as: 1.
Preferably, the polymer nanocomposites have high mechanical properties.
Ion - exchange and surface properties can affect, among other things, by the action of the alkali metal hydroxide.
Besides the influence on the zeolite component, modification by hydroxides may dissolve some non-zeolite components, for example cristobalite, which can also positively to affect surface and ion-exchange properties.

The CAD software taking three-dimensional entity modeling technology as the core technology and the CAE software taking the virtual prototype technology and finite element technique as the core technology become more and more mature, and those technologies have been widely used in the design of mechanical products.
These features have affected the software’s’ functions in a certain extent.
Solidworks software has good seamless connection properties with ANSYS software, the Solidworks model can be put directly into ANSYS for finite element analysis.
The modal analysis for 7021 bearing assembly Because the bearing assemble is bearing alternating load in the actual working conditions, and the vibration may also be generated because of outside incentive, which will generate larger dynamic stress in internal structure causing the destruction of the bearing assemble and affecting the precision and stability of the transmission.
The dynamic analysis of the structure, The factor values of each order modal has an inverse ratio relation with the modal frequency, namely the lower mode characteristics determine the bearing assemble characteristics.