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For grasping the influencing factors of temperature, the experimental analysis basing on the infrared imaging method were carried out.
Then, it is suggested that the degree of difficulty is affected by property of granite material to a great extent.
So, the quick diffusion of heat from the grinding zone affects the whole temperature rise directly.
Results Using the infrared measurement, the temperature filed of quarter-circle surface on the granite and its influencing factors during grinding process are studied from different views.
Zhou: Mechanical Engineering of China, Vol. 19 (2008) No.8, p. 980

Optimum Design�Microstructure and Mechanical Properties of Ti/Ti3Al Multi-layered materials L.
This study concerned with the optimum design, microstructure and mechanical properties analysis of a multi-layered metal/intermetallic materials consisting of Ti and Ti3Al prepared by the electron beam physical vapor deposition (EB-PVD) technology.
The properties of these constituents are summarized in Table 1.
In the calculations, the plastic of materials was considered and the yield stress was determined according the mechanical properties of component material as shown in Table 1.
The stress-strain curve is one of the fundamental properties that determine mechanical properties in ductile phase reinforced composites [8].

However, the presence of lead in the composition of such bronzes significantly decreases their mechanical properties.
In lead tin bronzes there is an addition of one more component – tin, which significantly contributes to the formation of mechanical properties.
The presented changes in the structure of the casts are bound to affect their mechanical properties.
But the crucial factor determining cast properties is likely to be the presence of a supersaturated solid solution of tin in copper with high hardness.
It seems possible that the tribotechnical properties are critically affected rather by the hardness of copper matrix than the amount of the electron compound or lead inclusion shape.

Microstructure and mechanical properties of subcritical quenched 65Mn steel are investigated when different pretreatment is used.
The mechanical properties of 65Mn steel can be improved by austenite inverse transformation subcritical quenching.
The effect of pretreatment on the mechanical properties of 60Si2Mn steel is decrease.
(3) In the experimental temperature range, pretreatment process affects the content and grain size of the martensite in the 65Mn steel, and then affects the mechanical properties
(4) The austenite inverse transformation subcritical quenching improves the mechanical properties of 65Mn steel.

So the physical and mechanical properties and the composition of rock strata, the conditions of aquifers, and the locations of aquifers all affect on the stability of roadway.
In turn, pore pressure changes cause mechanical deformations to occur.
Making solid-fluid coupling analysis in FLAC3D, the result of seepage calculation depends on the basic model of simplification and modeling, at same time, the characteristics time and boundary conditions must be also considered, the two factors will affect the calculation results of the credible degree [5].
According to different rock properties, two models are established, model Ⅰ: impermeable model; Model Ⅱ: seepage from roof.
Water is one of the key factors to influence the stability of roadway, seepage makes the strength of surrounding rock sharply reduce, and the roof, two sides and floor appear serious deformation.

Tribotechnical properties lead bronzes N.V.
For multicomponent lead-tin bronzes, lowering of velocity of refrigeration lead bronzes leads to magnification of value of a friction coefficient and growth of mechanical properties.
A principal cause of low mechanical properties of these materials, presence lowstrength lead inserts.
Strength bronzes will influence not only the amount of lead, but also the shape and a size of the lead inserts, which shaping is spotted by a series of technology factors (pouring-in temperature, velocity of refrigeration, etc. [1, 2]).
A microstructure multicomponent bronzes of the gained: a) with a low speed refrigeration; b) with a high speed refrigeration The modifications happening in a microstructure of casts, at a modification of velocity of refrigeration affect and on them tribotechnical properties.

In the oxalate system, some factors of pH values, reactant concentration, feeding method and reaction temperature affecting the grain size and morphology of the precursor of Sm2Fe17 alloy by co-precipitation were investigated.
Sm2Fe17Nx of the compounds has excellent intrinsic magnetic properties.
With the fixed type of the additive, factors of pH values, reactant concentration, feeding methods and reaction temperature affecting precipitation rate, the grain size and morphology of the precursor of Sm2Fe17 alloy by co-precipitation were investigated.
The factors and conditions are as shown in Table 1.
Table 1 Factors and experimental conditions Factors Experimental conditions pH 1.5~3.5 Fe2+ 0.425mol/L~1.7mol/L Sm3+ 0.05mol/L~0.2mol/L Feeding methods Direct feeding,simultaneous feeding,converse feeding Results and discussion Effect of pH Value The pH value is one of the most critical factors in chemical co-precipitation, which determines the precipitation rate, the grain size and morphology of the powder particles.

The mechanical properties of 3D braided composites are depended on many factors, such as braid forms, manufacturing, cut-edge conditions and fiber volume fraction etc. 3D braided composites have the complex braid configuration.
There are majority of domestic and foreign scholars to study the mechanical properties of 3D braided composites [1-7].
In the present study, the macroscopic tensile mechanical properties of 3D four-directional braided composites are studied by experimental method.
Some main parameters of mechanical properties are obtained.
The effective properties of the 30° braided composites affected by thickness are less than that of the 45° braided composites.

Engineering ceramic are special hard and brittle materials, their surface properties are very sensitive to the state of the surface stress, the compressive residual stress can be improved part strength and surface properties in a certain extent, especially can increase breaking strength, tensile residual stress in the opposite role.
Many factors affect the residual stress in the ceramic grinding process, summed up in: ① grinding parameters like grinding depth ap, wheel speed Vs workpiece feed speed Vw. ② wheel like abrasive type, particle size, concentration, binders, trimming mode. ③ grinded material like hardness, brittleness, grain size, porosity. by test of grinding parameters, grinding wheel type, material and other main effect factors on grinding residual stress in engineering ceramics surface , results were carried obtained: (1) Al2O3 ceramics is grinded with diamond grinding wheel, when the grinding depth ap is less than 50μm, residual compressive stress increases with increasing grinding depth.
under repeatedly polishing, big residual stress interaction depth can produce good specimen strength and surface properties.
In the various affecting factors formation of residual stress, grinding temperature are the main factors of the influence of surface residual stress values and the role of depth, thermal stress caused by grinding temperature make the residual stress values and the role of depth change, thereby reducing the ceramic parts breaking strength.
Conclusions Residual compressive stress can produce better mechanical strength and surface properties, and the residual tensile stress in the opposite. the choice of parameters in the grinding process effect on the residual stress,the influence of grinding depth ap on residual stress is maximum, since the grinding temperature has a great influence on the residual stress, so reducing grinding temperature is conducive to produce a beneficial compressive residual stress on the surface properties.

Analysis of Reliability on Slope Stability Based on Safety Factor Dawei Lv1, a, Baoguo Shi2, b,Fei Wang 2,c and Guanjun Xu 2,d 1Guangdong Road and Bridge Construction Development Co, Guangzhou, Guangdong, China 2School of Highway, Chang’an University, Xi’an, Shanxi, China axingtianwuqi@163.com, b824872533@qq.com, cwangzhongfeii1989@163.com, dshuishishui1988@126.com Keywords:  subgrade engineering; rock slope; safety factor method; Sarma method Abstract: A mechanical model for Sarma method was built based on a sliding of simple non-homogeneous rock slope as the research object.
The slope system is a common geomorphologic shape; its stability depends on the physical and mechanical properties and failure modes of geotechnical.
The changing process of instability and failure modes will be affected by the diversity and complexity of the substance of the slope system and will be decided by complex rock structure, geotechnical conditions and the initial stress state.
The mechanical model is shown in Figure 1.
The stick compartmentalization can be distinguished according to the soil properties of the rock mass and actual landslide structural level.