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Load sharing is one of the main factors that determine gear strength.
However, tooth surface modification not only changes the meshing characteristics, but also affects the contact ratio, load sharing and strength.
The mechanical properties of the gear material and the torque applied on the pinion are described in Section 3.2.
Fang: Chinese Mechanical engineering.
Fang: Journal of Mechanical Transmission.

Moreover, the changes of physico-mechanical properties by HPTNSDPKEVLAR were analyzed by using tensile test at different strain rates range from ranging from 0.01 s-1 to 0.6 s -1.
Recently the concept of giving some modification of coatings through nano-technology has appeared due to the unique properties of nanocomposites resulting from the nanoscale structure [5-8].
According to previous research, Yiping Qiu's group has reported APPJ treatment can affect the saturation of functional groups on the surface layer of aramid fiber [13].
The reported values of all the mechanical properties have been averaged over at least 50 independent measurements. 3.
Compared with Figs about tensile strength and yield strength, the difference of slopes may be due to some other factors we have not discussed above.

Effect of Treated Sago Pith Waste Ash and Silica Fume to the Mechanical Properties of Fly Ash-Based Geopolymer Brick Izwan B.
Factors affecting the suitability of fly ash as source material for geopolymers.
Fugitive particulate emission factors for dry fly ash disposal.
Effect of silica fume on the mechanical properties of fly ash based-geopolymer concrete.
The mechanical properties of fly ash-based geopolymer concrete with alkaline activators.

The sample frequency of permeability greater than 0.8 ×10-3μm2 is 92.0%. 1.3.3 Relationship between porosity and permeability Generally, the porosity increases with the penetration. 1.4 The analysis and factors of reservoir diagenesis influence The reservoir property depends on diagenesis longitudinally, and the influence to reservoir is relatively complex, destructive and constructive, it directly affects the pore evolution of the reservoir.
It is concluded that formation of the research area is caused by mechanical compaction, pressure-solution, cementation and dissolution, etc. 1.4.1 The effect of mechanical compaction and pressure solution Strong mechanical compaction and pressure solution are one of the main factors of weak pore structure.
In general, chlorite precipitates earlier than the others and develops diaphragm cementation, so the pore will be blocked and the physical properties will be reduced.
Carbonate minerals in the sandstone in the study area is secondly most to the main cement laumonite, and it is the major destructive factor to the reservoir property in the research area.
The reasons for the well congestion By analyzing the deposit feature, reservoir properties, pore structure and other features in this area, we can conclude that Dingbian Oilfield is typical in low pressure, low permeability, low-yield, the “three lows" fractured reservoirs, so weak reservoir properties, low pressure, low temperature and areolate throat are the main factors the oil production is damaged by different operations, congestion in near wellbore reservoir affects the normal production wells reducing fluid production and oil production.

Blank-making roll forging is the key to ensure the technology of roll forging to be normal proceeded, so finite element(FE) simulation based on thermal-mechanical coupling is necessary for the blank-making roll forging process.
Figure 2 Forging final forming diagram of front axle roll This topic use surface to surface(STS) and coulomb friction to simulate contact, it define the roll surface as target surface and contact surface, friction factor in roll androlled piece is .
Experimental material and equipment The numerical simulation of precision performing forge rolling process of front axle use rigid-plastic finite element method which based on thermal-mechanical coupling, take work piece as rigid plastic body and roll die as rigid body, using UG software to realize 3D solid modeling of automobile front axle roll die
Shear friction factor between die mold and work piece value 0.4, rotation rate of roll forging is 30r/min.
Temperature change of work piece was affect by material properties, thermodynamic performance and change of processing conditions, such as friction coefficient of interface , velocity can affect the change of temperature and temperature distribution.

A general equation for the contact factor estimation was developed (Eq. 5)
Magnesium alloy AZ31 The tribological properties of the magnesium alloy AZ31 at 350 °C, 400 °C and 500 °C under two different normalized normal stress levels (1.5 and 6) and different relative speeds (0.1, 1, 5 and 50 mm/s) was also studied.
The changes of the microstructure observed in AA6060 (Fig. 6) and AZ31 (Fig. 8) at different temperatures show possible variation of the mechanical properties in the resulting extrudates.
In order to investigate possible variations of the mechanical properties in AA6060 and AZ31, Vickers micro-hardness tests (at room temperature) were carried out in crossections cut through the mid-plane of the specimens.
Dean, An investigation of the effects of solution heat treatment on mechanical properties for AA6xxx alloys: experimentation and modelling.

The exceeding of critical temperature is the root cause of degradation of useable properties of material.
For this reason the enhanced requirements regarding useable properties of basic engine parts must led to material with higher service parameters and its modern metallography and non-destructive diagnostics.
The Eichelberger factor EF [2] serves to comparison of material suitability.
Resistance against this loading is characterized by Eichelberg factor EF.
Cr alloying improves creep strength and brittle fracture properties.

Activated carbon, having well-developed pore structure and high specific surface area of many factors of the variables effecting CMP are known.
These factors can be changed and balanced to achieve a desired level of performance of polished material for a particular polishing task or particular polishing tool.
Revision to any one of the factors to increase a certain aspect of performance often requires compromise in others[7-11].
Those mentioned above has effect on some important CMP properties, such as polishing rate and polishing effect.
Through the comparison for various factors, the pH value of CeO2-SiO2 CMP slurry should be controlled in 10-10.5.

As a result, optical (photochromic effect) surface and mechanical properties of the material change significantly.
To study the effect of different external factors on the materials structure a unique setup, that includes UV-lamp and heating/cooling stage, was developed.
The equipment allows to study in situ the structure formation processes of ion-conducting membranes under the influence of external factors (temperature, solvent vapors, UV-radiation) that effect the structure and functional properties of the material.
Thus, UV-radiation can effectively change the volume ratio of the lamellar and hexagonal phases and control such important thin films properties as proton conductivity.
The effects of external factors on the film morphlogy for the samples swollen in methanol vapors were confirmed by OM (Fig. 3).

But most of previous work focused on the influencing factor of the vibration, such as traveling speed of vehicle, deck surface roughness and vehicle-bridge frequency ratio etc.
Bridge deck roughness is an important factor affecting the vehicle-bridge coupled vibration of highway bridges.
In engineering practice, the power spectral density(PSD) is usually used to describe the statistical properties of random bridge deck roughness.
Mechanical coupling relationship.
(2) The impact factors of continuous girder bridges(2~5 spans) are obviously less than that of simple- supported girder bridge(1 span).