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The casualties and property losses of accidents caused by fatigue failure are very great [1].
It gets extensive attention among some famous foreign enterprise groups, and it plays a tremendous role in mechanical products development and design, which produces remarkable economic benefits.
The change in load order will not affect the resistance to fatigue life.
Input stress value of balance beam, time curve of variable amplitude load and material fatigue properties into MSC.FATIGUE, then get the damnify and fatigue life of balance beam as is shown in Fig. 8.
[2] Zhou, C.N., Xie, J.J. and Hong, Y.S: submitted to Mechanical Strength (2004), In Chinese

Introduction Renewable energy is one of the important factors to create a sustainable world due to depletion of world petroleum reserves, unstable in crude oil price and environmental deterioration due to fossil fuel burning.
Nowadays, biodiesel is commercially being used with a goal to decrease the dependency on fossil fuel, reduce the greenhouse gases due to biodiesel has similar properties as petro diesel and is considered as clean fuel [1].
Variables affecting the yields of fatty esters from transesterified vegetable oils.
Journal of Mechanical, 32(2011), 61-72
Factors affecting biodiesel production.

Fibers have the effect of improving some of the material properties of concrete such as compressive and flexural toughness, fatigue resistance and impact resistance [1, 2, and 3].
The fibers enhance the concrete properties by improving its effectiveness in inhibiting the rapid and unlimited propagation of cracks, associated with catastrophic failure in plain concrete.
Synthetic fibers; such as polypropylene fibers; have some unique properties that make them excellent candidates to be used in concrete.
The geometrical and mechanical properties of fiber used in this study are presented in table 2.
Geometrical and mechanical properties of fibers shape Length (mm) Aspect ratio Specific gravity Tensile strength (MPa) Elastic modulus (GPa) Twisted 60 120 0.91 379 4.14 Mixtures.

Introduction With the development of modern industry, the requirement of mold life is increasing day by day, the mould surface quality is the key factor affecting its service life.
Nitriding is a common method to improve the surface hardness, mechanical properties, wear resistance and corrosion resistance of metals [3,4].
Fig. 6 Microstructure of Fe-Ti by Plasma Spraying after laser nitriding(a, b, c, d) Mechanical properties.
Liu, A comparison of microstructure and mechanical properties of welded thin Ti6Al4V with three different types of laser, Mater.
Xu, Relationships among the Microstructure, Mechanical Properties and Fatigue Behavior in Thin Ti6Al4V, Adv.

How the preparation method affects the optical properties?
How the optical properties of NCPs affect the characteristics of the sensor?
Nanocomposite material as Electrochemical sensor In comparison to their bulky counterpart, the carbon-based nanomaterials gain remarkable properties, viz. greater surface area, high electrical and heat conductivity, and mechanical properties [71].
The size, morphology, solubility, stability and concentration of the NPs; are some factors on which toxicity and the penetration rate towards the biological membrane depends.
Of course, it compromises the physical, chemical, and mechanical properties of the final products, since contamination affects surface volumes [96 – 99].

The catalytic properties of copper catalysts prepared by coprecipitation method Hongya Li 1,a, Tiantian Zhang 2,b, Biao Yan 3,c 1School of Chemistry and Chemical Engineering, Yulin University, Yulin 719000, China 2College of Chemistry and Chemical Engineering, Longdong University, Gansu 745000, China 3School of Chemistry and Chemical Engineering, Yulin University, Yulin 719000, China a lihongya0521@163.com, bzhangttbetter@126.com , bdonghuhai@qq.com Keywords: Acid Red B, coprecipitation, catalytic wet air oxidation, wastewater Abstract: A series of copper catalysts were prepared by coprecipitation method and used for treating the Acid Red B wastewater with catalytic wet air oxidation method.
So clarifying the effect of catalyst preparation conditions on the catalyst physical properties as well as its catalytic performance has important theoretical and practical significance for the catalyst research and development.
The order of addition of precipitating agent has a great impact on the properties of the catalyst.
The effect of reaction temperature on the particle diameter of the product is remarkable, in the precipitation process, the size of the particles was mainly decided by the rate of nucleation and its growth rate, and the latter is more easily affected by the reaction temperature.
As an other important factor, the calcination temperature can impact on the catalyst activity, stability and mechanical strength.

Introduction All The nickel based material Inconel 690(IN 690 superalloy), which offer a excellent corrosion resistance and mechanical properties at elevated temperatures, is widely used for steam generators tubes in pressurized water nuclear reactors of nuclear power plants [1].
The hot extrusion process has been applied in order to reach the required properties.
The inhomogeneous deformation is an important factor for superalloy tube during the hot extrusion process, which affecting the quality of products.
The results of numerical simulation strongly depend on the input data regarding the physical properties of materials.
Glass lubrication condition is an important factor of hot extrusion process, because it directly affect the stress field, temperature field and squeeze pressure distribution, which impact on the uniformity of deformation.

The typical impact of different microalloying elements on strength and toughness properties is given in figure 2.
When compared to Ti-microalloyed steel, Nb-microalloying offers a considerable reduced scattering of the mechanical properties of the hot strip [9].
The best mechanical properties are attained when the soaking furnace is operated at temperatures at or above 1100 °C, with the residence time in the furnace being about 20 minutes.
Table 4 summarises the mechanical properties of the 6 and 10 mm thick X52 hot strip.
Mechanical properties of X52 hot strip Gauge [mm] YS [MPa] UTS [MPa] El (A5) [%] YS ratio [%] Trial 488 544 26.0 0.9 6 510 552 25.8 0.92 Trial 10 446 501 25.2 0.89 API X52 / X60 / X65 ≥ 359 / 414 / 448 ≥ 455 / 517 / 531 ≥ 20 / 18 / 18 - The excellent toughness properties are further underlined by the notch-bar impact results.

Nanoscale cementite can be obtained in 0.17% carbon steel during isothermal treatment at 500oC after ultra fast cooling (UFC) and thermo-mechanical treatment.
The combined effect of Mn and Si on the above two stages are embodied in adjustable factors F2 and F3, respectively.
F3 is an adjustable factor.
The deviation comes mainly from the following two factors: the extremely small particles were overlooked during statistical analysis, the mean radius was calculated on the basis of two-dimensional TEM micrographs using Image-Pro Plus software rather than equivalent volume method which is more appropriate.
Dussoubs, International Journal of Microstructure and Materials Properties, 1 (2006) 197

Physical Modeling for Motional Cable under Smooth Plane Constraint Jin Wangtao1, a, Liu Jianhua, Tang Chengtong and Liu Jiashun 1School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China awangtao_jin@163.com Keywords:Motional cable; Smooth plane constraint; Thin elastic rod theory Abstract.
Introduction As cable parts are widely used in auto, aerospace, aviation and many other fields, normalization and reliability in the process of cable assembling has become one of the most important factors which affect the products assembly quality.
Euler parameters have the property that their sum turns out to be one and the relation to the bending and torsional stiffness wx, wy and wz
Journal of Mechanical Engineering, 2011, 47(9): 117-124