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Material Properties.
Material properties of three-dimensional woven fabric are shown in the table 1.
For example, the normal stress of x direction is regarded as uniform pressure load to affect the external surface of the x-axis positive direction, shearing stress is regarded as in-plane load to affect the external surface of the x-axis positive direction and other component of stress is made similar treatment.
Properties of tensile strength of 3D carbon fiber fabric reinforced epoxy resin composites are studied.
These factors will influence the final test results.

Among the myriad factors that ultimately influence the global properties of epoxy/Al(OH)3 composites, filler dispersion and interfacial interactions are the most crucial ones affecting the mechanical properties of the composites [3].
The flexural properties of epoxy based composites: (a) flexural strength, (b) flexural modulus.
This special polydopamine modified Al(OH)3 reinforced composite should possess good mechanical properties due to the strong interface adhesion which allowed the stress to transfer across matrix and the thorns.
This suggested that the polydopamine layer play an important role in improving mechanical properties of the composites by strengthening filler-matrix adhesion.
Yanumet, The adsorption of cationic surfactants on BN surface: Its effects on the thermal conductivity and mechanical properties of BN-epoxy composite, Colloids and Surfaces A: Physicochem.

At last some influence factors alignment precision is analyzed.
At last the affecting factors of non-coincidence errors between the focal plane and object board are analyzed.
The measurement result shows that the collimation of the LDC system is 0. 3 arc second The accuracy of focus detection will be affected by the following factors: relative aperture of optical system, optical component surface shape quality, aberrations of optical system, inherent noise and instability of the CCD detector, air disturbance (for collimator with long focal length), vibration caused by motor drive, the drift of the laser interferometer.
The stability of the spot energy distribution will be affected by the CCD noise and mechanical vibration.
All these factors will obviously reduce the detection sensitivity of focus position, which can be verified by above experiment results.

The study on mechanical properties of karst tunnel Bin Li a, Taiyue Qi b School of Civil Engineering, Southwest Jiao tong University, Chengdu, Sichuan province, China aphdlibin@foxmail.com, bqitaiyue58@126.com Key word: Karst tunnel; Deformation of lining; Safety coefficient; Finite difference Abstract: Several numerical models were built by FLAC3D to simulate tunnel with karst around spandrel, tunnel with karst around springe, tunnel with karst around inverted arch and tunnel with karst around side wall.
The results from the numerical modeling suggest as follows: karst around spandrel has extremely unfavorable effect on the deformation of lining and the safety of surrounding rock above the vault, karst around side wall also seriously affect the stability of tunnel due to the asymmetry pressure on tunnel caused by karst, consequently, auxiliary measures should be taken to handle these two cases; karst around springe and karst around inverted arch has limited adverse influence on the overall safety of tunnel, backfill measures are enough to handle these two cases.
Minimum safety factor method for stability analysis of surrounding rock mass of tunnel[J].
Karst around inverted arch mainly affected deformation of lining at inverted arch.

Speed of the vehicle depends on many factors like steering geometry, inflation pressure, vehicle load, road temperature and environmental conditions.
The mobility of the sand, the indentation and slip of the tyre are an important factor that affects the traction performance of off-road vehicles on sand terrain.
Nallusamy and Gautam Majumdar, Effect of stacking sequence and hybridization on mechanical properties of jute-glass fiber composites, Int.
Nallusamy, A review on the effects of casting quality, microstructure and mechanical properties of cast Al-Si-0.3Mg alloy, Int.
Nallusamy, Analysis of welding properties in FSW aluminium 6351 alloy plates added with silicon carbide particles, Int.

The simplified structure should satisfy analytical requirements of mechanical properties, and be close to the actual engineering structure as much as possible.
As the piston rod and the axle integrally are connected by a sleeve, too much contact in the finite element settings will affect the calculation efficiency and results.
Therefore, the non-key parts which do not affect the analysis of key parts should be simplified.
(a) the elastic force curve (b) the stiffness coefficient curve Fig. 5 The stiffness characteristic and curves The main factors that affect the stiffness characteristics of the shock absorber are the initial inflation pressure and volume of the cavity.
The factors that affect the damping characteristics are the damping orifice, valve diameter and number of valves.

Introduction Thin hard coatings can be found in many mechanical applications.
Vickers microhardness (Remet HX-1000 Vickers microindenter) was evaluated on the titanium alloy bulk samples before and after the deposition to assess any changes in the mechanical properties induced by the heat treatment at 420°C.
The surface hardness of the alloy was not significantly affected by the deposition process (as received: 271 ± 4 HV0.5; after deposition: 286 ± 4 HV0.5).
The reduction of the applied stress is quantified by a fatigue stress intensification factor Kf calculated for a fatigue life of 200000 cycles.
Comparing it to the lower Kf from the fatigue tests, the notch root plasticity due to the stress redistribution may be supposed to be one of the main factors affecting the fatigue life of the notched specimens, as far as the uncoated ones are concerned [9,10].

Polyesteramides (PEA) has both good heat resistance and degradability properties.
Polyesteramides has both good mechanical properties and degradability.
More than this concentration, the properties of the materials would decline [7].
There are many factors affected the degradation rate of PEA/MWNTs, The report related to nanocomposites’ degradation rate is more complex, some is conflicting [8,9].
Based on the discussion of the material preparation, there may be a chemical bond between MWNTs and PEA, chemical bond makes the material had good mechanical properties.

There are many factors, which will affect the springback, the springback amount of bending parts will has a great change because of the volatility of material property and the change of friction conditions for each obiect to be processed, even if other forming condition are the same.
In this region, there is bending moment and a bending curvature affecting the sheet metal, The distance between die and punch is very small by comparing with the bending stroke, and the radius of bending curvature is very large, so this region can be seen as a straight line.
In addition, the size of springback angle is also affected by same factors, such as the shape of bending part, sheet thickness deviation, etc. which should also be considered in the design of the mold.
Chinese Journal of Mechanical Engineering, 2011, 37(11):92-95
Chinese Journal of Mechanical Engineering, 2003,16(2): 190-192

Fracture Properties of Curauá Fibers Reinforced Polymer Mortars J.M.L.
A general consensus about the main advantages of natural fiber reinforcements includes low cost, low weight, availability, low density, ease of recycling, thermal and acoustic insulation, moderate mechanical properties and carbon dioxide neutrality.
Among the vegetable fibers with potential application in the field of reinforced polymers stands out Curauá, which by their mechanical properties, has received special attention from researchers.
Epoxy resin properties provided by the manufacturer are presented in Table 1.
Reis, Effect of textile waste on the mechanical properties of polymer 400 concrete, Mater.