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So stability problem of steep- high slopes has become a key technical problem in hydropower projects, affecting and restricting the development of hydropower resources and engineering construction [1].
Numerical analysis such as finite element method, distinct element method and DDA can simulate the influence of various factors in detail.
According to the above principles and calculation formulas, safety factors corresponding to cracks of different depths under earthquake are calculated.
Yes No No No No Results show that rock block is not overthrown by moment under 0.05g level earthquake effect in section 1-1 and 3-3 when safety factors are higher.
(3) Under rainstorm condition, water infiltrates into stress-release cracks, affecting the stability of rock mass in the low part of steep rock slope.

The laboratory tests carried out on the material were conventional test methods including unconfined compressive strength, cleavage strength, resilient modulus and shrinkage properties tests.
All these factors would affect the result of mix gradation.
Recycle mixtures with aged asphalt material could be affected by temperature.
Experimental study of mechanical properties of cold in place recycled mixture.
Fatigue properties of cold—recycled asphalt mixture.

The influence of rare-earth masterbatch’s content and knitting technologies on the properties of DTY fibers with porous superfine-denier is also particularly discussed.
Figure 2 The morphology of superfine-denier fiber (A) and normal fiber (B) Table 1 The influence of masterbatch on the mechanical properties of Nylon 6 POY fiber In addition to the influence of rare-earth content on the spinning process, other parameters, such as the spinning temperature, oiling agent concentration, quenching unit and spinning speed, etc., could affect the spinning process and the fiber properties as well.
All of above the parameters could influence the process and the properties of the DTY fiber, especially for that of the porous superfine-denier DTY fiber.
Here, the effect of draw ratio on the process and properties is discussed in details.
The draw ratio is usually determined by the elongation at break of the POY fiber, which directly affects the physical and chemical properties of DTY fiber, such as the fineness, breaking strength, elongation at break, crimp percent and curling stability.

Stress corrosion cracking occurs, when three factors are combined: tensile residual stress due to welding, material sensitization in the heat-affected zone, and the corrosive environment.
In other words, eliminating one of these factors might prevent from generating stress corrosion cracks, and it is expected to extend the fatigue life of nuclear reactors [3].
Because the shot peening treatment involves the combinations of many factors in the collision between shot grains and the specimen’s characteristics, and the mechanism of micro-structural transformation is also important point to consider the process’s effect.
Tables 2 and 3 show the chemical composition and the mechanical properties of HT780, and Figure 2 shows the stress-strain curve of HT780 [9].
Table 2 Chemical compositions of specimen (HT780) Table 3 Mechanical properties of specimen (HT780) Fig. 2 Stress-strain curve of HT780 When the residual stress distributions were evaluated, the block-type specimen of 49 mm length, 28 mm width and 5 mm thickness was used.

Therefore, the effectiveness of surfacing depends on the mechanical properties and functional characteristics of the deposited metal.
The structure and operational properties of the Fe-Ni alloying system have been studied in most detail among maraging steels.
Guo, Maraging Steels: Modelling of Microstructure, Properties and Applications, Woodhead Publishing, Cambridge, 2009
Heo, Effect of Nonequlibrium grain boundary segregation of alloying elements on mechanical properties in Fe-5Mn-9Ni-5Mo alloy, Materials Transactions. 37 (1996) 56-62
Gonzalez, Microstructural factors controlling the strength and ductility of particle-reinforced metal-matrix composites, J.

Several factors that influence the corrosion rate in acid include pH, temperature, solution concentration, and the presence of oxidizing ions [5].
It demonstrates an increase in immersion for each specimen, influenced by the occurrence of microgalvanic corrosion due to the previously corroded ground specimen, which provides a potential difference capable of affecting the corrosion properties of the polished specimen.
Danaee, "The effect of repeated repair welding on mechanical and corrosion properties of stainless steel 316L," Mater.
Khorshahian, "Microstructure and mechanical properties of resistance upset butt welded 304 austenitic stainless steel joints," Mater.
Mahmoodian, "Effect of Applied Stress on Corrosion and Mechanical Properties of Mild Steel," J.

The influences of the key factors (i.e. emulsifier, stabilizer, concentration of the oil phase) on synthesis reaction were systematically evaluated.
Determination of thermal properties and thermal reliability of the product: The melting and crystallization point, and latent heats of PMMA/paraffin microcapsules were measured by using differential scanning calorimeter (DSC) (DSC 823e, METTLER TOLEDO).
The changes in thermal properties after thermal cycling were evaluated using DSC analysis.
Thermal properties of microcapsules: The DSC curve of microcapsule sample is illustrated in Fig.1 (B).
The latent heat (enthalpy, ΔHm) of the paraffin is 212.14 J∙g-1, so the paraffin content in the microcapsules is further calculated based on ΔHm, by assuming that the microencapsulation does not affect the ΔHm of core materials [14].

In the previous studies on the ERW pipe performance, Chapetti et al [2] analyzed the cause of defects which were formed on oil transmission pipe and evaluated the fatigue properties.
Chemical composition and mechanical properties are listed on the Table 1 and Table 2 respectively.
Table 1 Chemical composition Table 2 Mechanical properties Chemical Compositions [wt.%] t [mm] C Mn Si P S Nb, Cr, Cu, V, Ni Ceq T.S [MPa] Y.S [MPa] El. [%] vE-20°C [J] 11.6 0.038 1.31 0.23 0.006 0.001 ≤ 0.8 0.335 617 562 39 464 Fig. 1 shows the surface-cracked specimen used in this study.
As recommended in ASTM E740-88, Newman-Raju equation [6] was used to calculate the stress intensity factors of the specimens.
Stress intensity factors for the pipes were calculated with the Newman-Raju equation [7] obtained from the 3-dimensional finite element analysis.

Its failure can seriously affect the work of drilling rig .
Temperature, air pressure, wind force, pollution, rain and snow, lightning, dust, water quality and other environmental factors may affect the sensor to work properly.
(1)Hydraulic oil temperature detection In the drilling rig hydraulic system, the hydraulic oil will lose some power in the transmission process; this part of power can converted into heat.And there is great relationship between the hydraulic oil physical-chemical properties and the hydraulic oil temperature.
The ultrasonic transducer is capable of receiving waves and producing mechanical vibration, and then transforming the mechanical vibration into electrical energy that is the output of the ultrasonic receiver.
[2] Chinese Mechanical Engineering Society for NDT “Ultrasonic Testing,” Machinery Industry Press,in press

Affects the overall result (e.g. damage to the cutting tool, roughness of the machined surface, failures, defects and changes to the mechanical properties of the work piece) of the machined surface on the component.
Not always is the tool durability (service life) the decisive factor.
Fig. 3 Dependency of the tool service life on the cutting speed Table 1 Comparing certain exponent values for defined conditions The cuttingtool material Exponent "m" f=0.04 mm f=0.08 mm f=0.1 mm N15 - HSS 4.33 3.27 2.36 N16 - HSS+8% Co 3.07 1.6 1.81 N18 - SC 2.47 1.54 1.38 N19 - HSS+8% Co 1.88 1.51 0.97 N20 - SC +TiAlN 1.6 0.9 1.43 N21 - SC +TiAlN 1.11 0.83 1.04 N22 - SC HPL (M) 1.07 1.24 0.81 The cutting speed mainly affects: tool service life, needed input power.
The feed speed affects:chip shaping,necessary input power,contributes to mechanical and thermal stress.High feed speeds can cause:good chip shaping,shortened periods in mesh,reducing the tool wear,increasing the risk of destroying the drill, reduced hole quality.
The shape of chips affect:the quality of the hole surface after cutting,the destruction of the cutting element of the drill.