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Introduction In improving physical-mechanical properties of materials, we largely depend on the treatment technology including modern methods and the combination of various techniques.
In this case, higher toughness may be caused be the following factors.
The character of the specimen fracture of Fe360 low-carbon steel with a coarse- and sub-microcrystalline structure with a V-shape incision at impact bending was affected, besides the structure condition, defectiveness, and other factors, by the grain size and a lower testing temperature. 2.
Zolotorevskiy, Mechanical properties of metals, Metallurgiya «Publ.», Moscow, 1983
Shagalina, The mechanical properties of submicrocrystalline steel 09G2S after ECA-pressing, Moskovskiy institute stali I splavov «Publ.». (2004) 143

Though characterized with excellent mechanical properties and good durability, high strength concrete has poor ductility.
In practical engineering, mechanical properties of high strength concrete are often improved by adulterating fiber in concrete.
According to test results, the basic mechanical properties of steel materials are shown in table 1, basic mechanical properties of C80 concrete are shown in table 2.
In the process of internal force redistribution, the yield of the steel bar and the cracking of concrete are factors that affect the moving of the zero moment point.
Therefore, the steel bar is the main factor that affects the bearing capacity of the prestressed beam of high strength concrete - steel fiber concrete.

Simultaneously the powerful functions were used to fit the relationships between shear strength indexes and the three influencing factors respectively.
Soil properties are one of the main control factors of slope stability and decide on failure mechanism and sliding form .
Due to that soil properties differ in thousands ways to different slopes in different areas, safety evaluation and study of the post-earthquake high slopes in Sichuan Province should pay close attention to the post-earthquake soil properties.
Shear strength is one of the important mechanical properties of soil, which is affected by the influencing factors, e.g. grain mineral composition, shape and grading, original density, water content, pore water pressure and so on [7].
The control requirements on the three influencing factors in every pattern are listed in table 1.

They have found the most important factor that affects warpage is packing pressure.
Its properties were given in Table 1.
Table 1 Properties of PP+EPDM+20%Talc material PVT Properties Mechanical Properties Solid density(g/cm3) 1.0476 Elastic modulus(MPa) 1530 Melt density(g/cm3) 0.86622 Shear modulus(MPa) 550 Recommended mold temperature(℃) 40 Poisson’s ratio 0.392 Recommended melt temperature(℃) 220 Fibers/Filler (Talc filled) 20% Table 2 Process parameters and their levels Number Uncoded Parameters Levels low high 1 Mold temperature(℃) 30 50 2 Melt temperature(℃) 200 240 3 Coolant temperature(℃) 20 40 4 Injection time(s) 1.6 2.0 5 V/P switch-over 97% 99% 6 Packing time(s) 18 22 7 Packing p (% Inject p) 60 100 6 Coolant Reynolds number 8000 12000 FFD experiments for warpage.
In any experiment involves the study of the effects of two or more factors, then factorial designs are most efficient than one-factor-at-a-time experiments.
The following conclusions can be drawn based on the experimental results. (1) The melt temperature was the most principal factor affecting the warpage in injection-mold. (2) Increasing coolant temperature and decreasing V/P switch over under higher mold temperature has a negative influence on reduction of warpage, and increasing coolant temperature and V/P switch over under lower coolant temperature has a positive influence on reduction of warpage. (3) According to the structural analysis, it is seen that the strongest point is point A and the weakest point is point D.

In this paper, mechanical property, forming ability, baked-hardening and work hardening properties of high strength steel DP450 are studied by experiments, and compared with those of steel MS6000.And theoretical research on predicting the forming limit of steel DP450 by the NADDRG model.
Experimental results analysis The Mechanical properties of experimental material.
The differences in strengthening mechanism between dual phase steel and the traditional HSLA steel have led to the distinctions in the mechanical properties.
The mechanical parameters of DP450 and MS6000 steel in the experiment are shown in Tab.2, through which we could make qualitative analysis and evaluate the plate forming properties.
Intensity parameter of martensite is hard to define.The carbon content is an important factor,it affect martensite’s tensile property of DP steel obviously.Some researcher[9] adopt vickers microhardness test to measure relation between strength of martensite and carbon content.

The test data can be exactly collected and effectively handled by this system, which has blow properties: high signal accuracy, high repeatability, simplicity of operator, et al.
The function of control system of intelligent ammunition is to control the ammunition dispersion and the opening time of ammunition cabin, which is affected by several types of disturbances.
The categories of key test signals and their properties are listed in table 1.
category and property of simulated signal Items signal property 1 Sine signal 2 Ambipolar rectangular wave signal 3 Double hump working current 4 TTL level signal 5 Time interval from zero time to opening time 6 Working current in control center design of hardware system basing on PC104 bus The modular technology of PC104 bus was used to design hardware.
Software is the hardcore of simulating test, which is most important factor for test precision and efficient.

At high carbohydrate content, the incompatibility of LDPE and carbohydrate affect the mechanical properties due to different polar character [6].
The decreasing of tensile strength and Eb was due to the increased fiber-to-fiber interactions which results in low mechanical properties of composites [9].
The uptake of water is affected by factor such as compatibility.
As the fiber and the blends do not expand at the same rate, microcracking will occur in the blends around fibers, which might causes the decrease in mechanical properties.
The presence of compatibilizer had influenced the properties of the tensile properties.

The Research on Oil-air Lubrication in Grooved Sliding Bearing Wang Jinlia, Li Liquanb and Liu Shaogangc College of Mechanical & Electrical Engineering, Harbin Engineering University, Harbin 150001, China awangjinli@hrbeu.edu.cn, bliliquan@hrbeu.edu.cn, cliushaogang@hrbeu.edu.cn Keywords: oil-air lubrication; grooved sliding bearing; friction coefficient; temperature rise Abstract.
Many Factors affect the oil-air lubrication of sliding bearing such as oil supply, air pressure, load, bearing structure and so on.
This paper has studied the lubricating property of oil-air lubrication and oil lubrication on grooved sliding bearing, and the performance of grooved sliding bearing under different lubrication parameters and preloads is investigated by measuring the element’s temperature and friction coefficient.
Test Scheme The single factor method, which measures the grooved sliding bearing’s temperature rise and friction coefficient caused by the oil-air lubrication and oil lubrication in the same load and speed, is adopted.

Effects of properties of tubing and equipment material on erosion and corrosion may be considered.
Cavitation corrosion is caused under the coordinated action of mechanical and chemical factors.
In addition to corrosive component content, the proportions of oil, water, and gas in multiphase systems and the change of phase state may affect corrosion severity.
The relative density of natural gas is 0.6 and gas deviation factor is 0.8.
[2] Wan Xiping, Zhu Jinchuan, et al., (Trans.), The Carbon Dioxide Corrosion Control in Oil and Gas Production—Factors Considered in Design(Petrochemistry Press, China 2002)(In Chinese)

All the photoelectric detector module was fixed with the special mechanical properties.
Visual method explored burst point by eye and measure the time by stopwatch, which was affected by human factors and lack of objectivity, low accuracy; using sound and vibration sensor to detect, mainly to feel the sound and vibration generated during the explosion of the missile.
This detection was not affected by weather changes, but it was easy to false triggering; In contrast, the photoelectric measurement has advantages of high efficiency, good reproducibility, high sensitivity, and easy to implement automatic control and measuring[3].