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The lamps not only beautify the shape of automotive and fulfill automotive streamline design, but also are important factors for automotive running without accidents, especially in night or bad weather.
During the using process, the lamps have fogging and deformation problems, and these problems not only affect the beauty of the lamps, but also seriously influence normal lamp function.
Hao at al [1] give the discussion for the front steering lamp, and Wagner at al. [2] analyzed the effects of different analysis parameters and finite-element types on the thermo-mechanical properties.
Obviously, it means that direct heat radiation is the main factor, which affects the temperature of the lamp in this first stage.
[2] Wagner Andrej, Bucar Tomaz and Fajdiga Matija: Strojniski Vestnik/Journal of Mechanical Engineering, 52 (2006), p. 52

Each of these factors is set up as shown in Table 1 in which the Ton is a two-level factor, and the other parameters are three-level factors.
Input factors and levels.
Factors Factor levels Level 1 Level 2 Level 3 1 Ton (ms) 6 14 - 2 Cp (g/l) 0 0.03 0.06 3 Toff (ms) 14 21 30 4 IP (A) 4 8 12 5 SV (V) 3 4 5 Table 2.
That means that in this experiment, the S/N ratio is close to the normalized S/N ratio, and it has better properties than other experiments.
Step 6: Determine the significant factors by ANOVA analysis To understand how those PMEDM process parameters affect on the grey relation grades, ANOVA table is established as presented in Table 6.

Physical and mechanical properties may also be affected by the sintering parameters, specially the type of catalyst/solvent [5].
Another important factor that could influence in all characteristics of a synthetic diamond is the addition, in a small proportion, of a dopant to the catalyst/solvent [5].
In fact, as reported by Shipilo et al. [8], changes in the composition and characteristics of the graphite to diamond transformation zone, affects the yield and size of crystals.
Conclusions · The addition of relatively small amounts of Zn, as a dopant to the reactive mixture of graphite and 40%Ni-60%Mn, as catalyst/solvent, affected both the productivity and the granulometry of synthesized diamond crystals at 4.7 and 1300°C for 10 min
Based in the experimental results, it is suggested that the presence of Zn affects the solubility of C in the molten catalyst/solvent alloy and interferes with the nucleation and growth of crystals

Introduction Since Hertzain first described the cone-shaped fractures produced in contacts between glasses lenses in the 1880s, indentation method has extensively used in the characterization of fracture and deformation properties of brittle materials [1-4].
The indenter was attached to the universal mechanical testing machine (CMT 5105, China).
Therefore, loading rate will strongly affect glass strength and cracking.
Time dependence of stress was a key factor affecting local strength measured by spherical indentation.
Therefore, the loading rate affected the local strength greatly. 2) the dispersion of glass bending strength data was discussed in terms of statistical fracture.

Asphalt mixtures can be modified by adding materials that increase strength or improve other properties.
Further studies are needed to investigate additional factors that influence the measured frictional resistance [7].
Several of the factors affecting road skid resistance include the surface porosity of the pavement, surface wear caused by studded tires and aggregate, the polishing of surface aggregate, rutting due to compaction, bleeding and flushing of the bituminous binder to the surface, and contamination (e.g., by rubber, oil, water) [8,9].
Various properties of the aggregate were tested, and the results are given in Table 3.
Chouw, “Mechanical and dynamic properties of coconut fiber reinforce concrete”, Construction and Building Materials, 30 (2012) 814-825

Introduction Aluminium and its alloys are among the most important materials in engineering applications due to the combination of lightweight (ρ=2698 kg/m3), mechanical and thermal properties, easy workability and environmental resistance.
Pech-Canul considers that aluminium carbide is a brittle compound with a negative influence on the mechanical properties.
Surappa, Processing and properties of Al-Li-SiCp composites, Sc.
Nguyen, A review of factors that affect contact angle and implications for flotation practice, Adv. in Coll.
Cheng, Effect of limited matrix-reinforcement interfacial reaction on enhancing the mechanical properties of aluminum-silicon carbide composites, Acta Mat. 49 (16) (2001) 3243-3253

Introduction Ni30 superalloy is a new solution-strengthened nickel-based superalloy, which has good high temperature strength, high temperature oxidation resistance, gas corrosion resistance and mechanical properties.
At present, the influence of solution aging treatment on the microstructure and mechanical properties of nickel-based superalloys at home and abroad mainly focuses on the best solution aging treatment process, recrystallization, grain growth behavior, precipitation and dissolution of strengthened phase, and the effect of aging treatment system [4,5] on alloy properties.
Effect of solution heat treatment on microstructure and properties of GH3535 alloy [J].
Regulation GH3625 alloy seamless pipe structure and mechanical properties research [J].
Effect of solution treatment on microstructure and mechanical properties of 825 nickel-base alloy tube [C]/.

Moreover, the new polymer materials also have excellent optical, electrochemical and microwave absorption properties.
However, due to the poor comprehensive mechanical properties, insolubility in common organic solvents and poor rheological properties, it is difficult to process PANI with conventional molding methods and the large-scale applications of PANI in various fields are seriously hindered [9].
The electrical conductivity improvement also greatly enhances the electrochemical properties of the materials.
For COMPASS field is an ab initio parameterized force field, the relevant properties of condensed phrase can be effectively obtained.
In the COMPASS force field, since the hydrogen bond is recessive and can not be included in the calculation, the primary consideration factors include Van der Waals force and Coulomb force.

The simulated results show that NC Cu can accommodate large plastic strains without cracking or creating damage in the grain interior or grain boundaries, revealing their intrinsic ductile properties compared with NC Ni.
While the plastic properties of NC metals have received considerable attention, there is not yet a complete understanding of the mechanisms of plastic behavior.
Therefore, the details of structure of GBs may have great influences on their mechanical properties.
These observations lead us to conclude that even for the FCC structures other factors should be taken into consideration in terms of their mechanical response under extreme cases.
The bonding nature of "defect" atoms at GB region from more fundamental level, such as ab initio calculation of GB structure and properties should play an important role in achieving this purpose.

Introduction The computational modeling of aluminium alloys has attracted a lot of attention in recent years due to their constantly growing application in the automotive and aircraft industrial sectors which require the use of materials with a light weight but good mechanical and corrosion resistant properties.
When temperature and deformation simultaneously affect the material, as in hot rolling, study of microstructure and properties evolution becomes even more complex.
With constant development of numerical methods the simulation of material properties under different product processing parameters is becoming more realistic nowadays.
Vitos, Modelling mechanical properties for non-hardenable aluminium alloys, Comp.
Rønning, Modelling the evolution in microstructure and properties during processing of aluminium alloys, J.