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Introduction Cooling after finish rolling is a very important factor to determine the mechanical properties of hot rolled strip such as tensile strength, yield stress and elongation of steels.
Based on the UFC equipment, a series of cooling tests have been done to study the factors that affect the cooling capacity.

Machining mechanism of Fresnel lens mold Jia-liang Guan1, a, Xin-qiang Ma2, b, Cheng-guo Cao3, c, Xiao-hui Zhang4, c, Lei Zhu5, d 1,2,4,5College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology，Beijing 100124, CHN 3Beijing Precision Machinery ＆ Engineering Research Co.
Therefore, Fresnel lens has properties of excellent focusing optics and optical imaging.
This paper analyzes the mold design and processing principles of Fresnel lens, and elaborated factors of chip formation in mold processing through modal test.
Fig.3　Experimental chips The feed is also an important factor to determine the chip shape, the feed will also affect the changes in the shape of chips.

The GTAW process has large heat input and wide heat-affected-zone (HAZ) than high energy density process such as laser welding.
Austenitic stainless steels are chosen in view of their adequate high temperature mechanical properties and good weldability.
One such material is the alloy D9, which is a modified austenitic stainless steel having controlled additions of silicon and titanium along with increased nickel to chromium ratio, that exhibits better swelling and irradiation creep resistance properties [1].
Antony, Thermal Property Characterization of a Titanium Modified Austenitic Stainless Steel (Alloy D9), Journal of Nuclear Mats., 347 (2000) 20-30
Mannan, Thermal Creep Properties of Alloy D9 Stainless Steel and 316 Stainless Steel Fuel Clad Tubes, International Journal of Pressure Vessels and Piping 85 (2008) 866-870

Optimum Design of the 3Z-II Planet Drive Based on Matlab Qilin Huang1, a, Yong Wang1, b, Maolin Xu1, Jungang Wang1, Zhigang Luo1 1School of Mechanical Engineering, Shandong University, Jinan, China akylinme@163.com, bmeywang@sdu.edu.cn Keywords: planet gear; 3Z-II; optimum design; nonlinear; MATLAB; Abstract.
The common 3Z planet drive has many good properties such as well-knit structure, light and large-transmission ratio.
Through the analysis above, we see that the independent parameters which affect the objective function are Za, b, m, xa.
According to mounting factor, we get Ceq1(x)=C1-(x1+Zb)/np,Ceq2(x)=C2-(x1+Ze)/np.
According to concentricity factor of modified gear pair of 3Z-II planet drive, we get Ceq3(x)=(x1+Zc)cosαb-(Zb-Zc)cosαa; Ceq4(x)=(x1+Zc)cosαe-(Ze-Zc)cosαa According to transmission ratio factor |ip-i|/ ip≤Δi, we get C1(x)=|ip-i|/ ip-Δi .

In silicon, where the power laws also hold well, there is some doubt whether the surface properties of doped crystals correspond to the bulk properties.
A brickwork array of square grains, alternately hard and soft because of alternating Schmidt factors which make shear under a tensile stress harder or easier.
All rows can be similarly treated, and the brickwork array can be randomised along the lines AA without affecting the argument leading to eq. (20).
Although the difference in Schmidt factors affects the primary slip system, activity on the several secondary systems which make up the rotational flow is plausibly equally possible in both sets of grains.
Cottrell: 1964, Mechanical properties of Matter (John Wiley, 1964 see section 9.4) [3] M.

This is known to possess excellent high temperature mechanical properties, in the absence of irradiation.
Occurrence of such modified layers had profound influence both on the mechanical and heat transport properties of the structural materials.
A-TIG joint was also found to have higher weld strength reduction factors.
Extensive R&D studies carried out IGCAR, Kalpakkam showed the excellent localised corrosion resistance of these alloys in addition to improvements in mechanical properties.
All these factors contribute to the fairly long time, i.e., ~ 20-25 years, for launching a new material in a nuclear industry.

Introduction One of the modern surface construction directions is the construction of high-rise buildings, which is ensured by a current high level of building technologies, creation of construction materials with the relevant properties and quality, and structural mechanics achievements.
To ensure the stability of high-rise buildings for a long time, it is required to have a valid pattern of stresses in soil, as well as difficulties caused by influence of a large number of factors.
They include the weight of the building and the type of foundation, the nature of soil, its physical and mechanical properties, moisture content, availability or likely appearance of the other land or underground structures, power and frequency of aftershock, wind load, soil rheological properties, especially the terrain, etc.
Thus, the processes which have occurred and affected a structural unit of the general system can be called event .
Numerical and theoretical research on mechanical performance of outrigger truss-wall joint in super high-rise buildings.

Currently, mechanical and electronic methods are usually taken to test the underground pressure of oil and gas wells [1], these methods need to suspend the equipments by steel wire after closing the oil wells and taken out after testing, which can not achieve real time logging, and the data interpretation seriously lags logging, affecting seriously normal production.
Selection of the material is crucial to the property of elastic component.
Consider the factors above, stainless steel[5] is chosen as the material of convoluted diaphragm, the modules of elasticity is , which is constant below, linear expansibility is , which is comparatively small.
The main parameters that influent the figure of the convoluted diaphragm are figure factor ,working radius , thickness of the diaphragm ,the depth of corrugation , distance of corrugation , the quantity of corrugation .
In this work, through finite element analysis to the convoluted diaphragms with and different , the properties are analyzed.

Development of Fuzzy-PID Temperature controller for Heating Furnace Based on ARM9 Zhang Xian1,a, He Jianwei1, shoujun Wu2, b 1School of Technical Physics, Xidian University, Xi'an, Shaanxi, 710071, PR China 2College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, Shaanxi, 712100, PR China a zhangxian712@163.com, b shoujun_wu@163.com Keyword: controller; uC/OS-II; Fuzzy-PID Abstract：A fuzzy-PID temperature controller with excellent Man-machine interface was developed employing fuzzy-PID control theory combined with uC/OS-II embedded system based on S3 C2440, ARM9 kernel produced by the Samsung Company.
Accuracy of temperature control directly affects quality and performance of the products.
Fuzzy-PID control possesses excellent steadily control properties, improved control accuracy and regulation time reducing without set up precise mathematical model [3].
Therefore, real-time multitasking operating system uC/OS-II is applied to solving these problems in the present work [5], due to it has the properties of integrity, transplantation and cutting.
Kp, KI and Kd is the key factors in this system to adapt different range of deviation and its change rate [7].

The stress concentration due to the materials with different mechanical properties makes the most damage occurred in the component interface.
Therefore, the crack propagation characteristics of the rubber are main factors of its strength.
Rivlin and Thomas [1,2] pointed out that the fatigue crack growth rate and tearing energy relations are material properties, independent of the load and specimen shape.
In order to affect the radial load and post-processing, the selection of the grid，structure 1/2, along the radial axis direction of symmetry, as shown in Fig.1, namely, the x-axis.