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SJY-16A scissor hydraulic lifting platform belonging to the axis of symmetry model, so you can take a quarter of the model for the study, material consists of 16Mn, simplified finite element analysis model is shown in Fig.8.
Von Mises stress is a stress measure value which focus on six stress components of three-dimensional stress state, it can be a good description of many engineering materials and structural safety about elastic and shaping.
As can be seen from Fig.8, the majority of the distribution of the lifting platform is blue, the stress distribution is from 9 to 161MPa, it is less than the material shear strength value of 355MPa.
Acknowledgement The authors would like to acknowledge the financial support by Jinan Municiple Scinence&Technology Developing Plan (201118001) and Shandong Provincial Science& Technology Developing Plan (2012GGX10302) References [1] H.
Chen: Journal of Zhejiang University (Natural Science Edition), Vol.29 (1995), p. 170-182 [7] C.

Introduction Rapidly growing application of SiC and related wide bandgap material for power electronics are based on epitaxial wafer technology [1].
Wide Bandgap Semiconductors for Power Electronics: Materials, Devices, Applications 1 (2021): 75-92
Schroder, Chapter 9: Charge-based and Probe Characterization, in: Semiconductor Material and Device Characteristics, Wiley-Interscience, Hoboken, New Jersey, 2006, p. 523
Lagowski, ECS Journal of Solid State Science and Technology, 6(11) S3129-S3140 (2017)
Csegazine Varga, Material Science Forum 858 (2016), pp. 353-356.

Research on Designing Optimum Asphalt Aggregate Ratio of Asphalt Mixture by Mechanical Index Method Hongmei Li1,a , Wenfang Liu 1,b Department of Architectural Engineering , Sichuan University of Science and Engineering , Zigong 643000, Sichuan, China alihongmei8229@163.com , b16437023@qq.com .
The raw materials and gradation in the test The coarse aggregate is diorite rock in Zhashui country in Shanxi province, fine aggregate is stone chips in Shanxi province, filler material is limestone mineral powder in Shanxi province, its main technical indicators are satisfied the standard request.
Table1 The passing percent of synthesize gradation gradation quality percentage of passing the follow screen hole 26.5 19 16 13.2 9.5 4.75 2.36 1.18 0.6 0.3 0.15 0.075 Z-gradation 95 81 72 62 50 35 23 17 13 8 7 4.5 The theory of mechanical index method Actually Mohr-Coulomb's equation can be used to illustrate the mutual relations between the material and the rut[1].
Acknowledgements This work was financially supported by the Sichuan University of Science and Engineering talent introduction Fund (2011RC22), Education Office of Sichuan Province Youth Fund (11ZB101).
[2] WG Wong: Performance-based Mixture Design of Asphalt-Treated Base Journal of The Institution of Engineers, Singapore Vol. 44 Issue 2, 2004 [3] Xinpo Zhao: Study on Base Material and Performance of Dense-graded Asphalt Stabilized Gravel, Chang An University(2006), in Chinese

Microstructure of Casting and Solid Solution of Cu-7.5Ni-5.0Sn Alloy Ruiqing LIU1,a, Shengli YANG2,b, Liang CHEN3,c, Weibin XIE2,d, Yinsheng YU2,e, Hairui WANG2,f, Yusheng DENG4,g 1State Engineering Research Center of Copper Smelting and Processing, GanZhou, China, 341000 2School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, China, 341000 3 Guangxi Investment Group Yinhai Aluminum Co., LTD., Nanning, Guangxi, China, 530028 4Copper Company of Beiyin Nonferrous Metal Ltd., Beiyin, Gansu, China, 730900 aliuruiqing66@yahoo.com.cn, byangshengli37@126.com, cCL6293@163.com, d545385220@qq.com, e421117232@qq.com, f710018429@qq.com, g13830029903@163.com Key words: Cu-7.5Ni-5.0Sn alloy; casting; solution treatment Abstract: The casting and solution microstructure of Cu-7.5Ni-5.0Sn alloy were studied.The results showed that the cast Cu-7.5Ni-5.0Sn alloy existed serious dendritic.
Experimental procedure The raw material used was electrolytic copper, high-purity nickel, high-purity tin and silicon.
[7] Chen-hou Xiao, Jing-san Liu and Zhe Li, Copper nickel tin framework material process capability study, J.
[9] Zhen-xia Li, World nonferrous metal material composition and Performance Manual, Metallurgical Industry Press, Beijing, 1992
Chinese Journal of Rare Metals, 34 (2010) 529-533

Many researchers had done lots of explorations and accumulated many research materials.
Yuji Wang who learned at Graduate school of Chinese academy of sciences, had realized the bead manipulation through high-gradient magnetic field, which produced by paramagnetic micro column array integrated in the chip [1].
At present, Chinese academy of sciences and Shanghai Jiaotong University have done some research about non-contacted magnetic bead droplet manipulation, especially qualitative analysis for the 3d magnetic field produced by the flat coils.
By partially differentiating Equation (2.1), the magnetic force per unit volume, (), in the horizontal x direction can be written as: （2.2） The magnetic force also can be expressed with the magnetic beads material properties and magnetic field gradient： （2.3） Where,,, are magnetic bead volume, permeability in vacuum, magnetic susceptibility, and magnetic induction intensity.
Journal of Functional Materials and Devices.

Optimization of Quenching Process Parameters of 15CrNiMo Steel Used for Roller Bit Bits Shengrui Su1,a *, Renbo Song1,b, Chi Chen1, Wensheng Ji2, Shide Li2 and Meiling Li2 1University of Science and Technology Beijing 2Ansteel Mining Company Auxiliary Material Factory a2802971367@qq.com, bsongrb@mater.ustb.edu.cn Keywords: 15CrNiMo; quenching process; mechanical properties Abstract.
In the bottom rock of the fractured well, the bearing part is composed of the internal structure of the cone, the claw journal and the rolling element [2].
Experiment The test material was taken from an annealed state of 15CrNiMo and had a size of φ130 mm and a height of 145 mm.
Cheng, Analysis of the material of the cone bit and the microstructure of the carburized layer, Pneumatic Tools, Drilling Tools, (4) (2016) 36-38
Wen, Study on the evolution law and microstructure homogenization control of large section special steel forgings, Beijing: University of Science and Technology Beijing, 2016 [7] W.J.

Introduction Synthesis and properties of one-dimensional nanostructured materials is one of the most important areas in modern materials science and technology.
Therefore, the dielectric constant of nanostructured materials should be larger than that of the conventional materials.
In nanophase materials, the grain boundaries have an amorphous or glassy structure.
Wolhfarth, Ferromagnetic Materials, Vol.
Chen, Journal of Crystal Growth 244, 88–94 (2002)

China Sports Track and Field Coaches training materials summarized the characteristics of our athletes as follows: highlight the "three fast" training of the speed utilization, fast run-up, fast touching the board and fast take-off; full play advantages of their own characteristics.
References [1] Yin Jun Zhong, Jia-yin etc, Effect of Vibration Strength Training on Changing of Muscle Power of Hip Joint of Long Jumpers, China Sprot Science and technology, 2009(6)
[2] Mroelants.c delecluse, Effects of 24 weeks of whole body vibration training on body composition and muscle strength in untrained females , International Journal of Sports Medicine, 2004
[4] Tang jianfeng etc, The Experiment Study of Vibration Strength Training to Muscle Strength of Ankl, Zhejiang Sport Science, 2005(3)
[5] Wei xiaoyan etc, Research on the Effects of Vibration Stimulated Strength Training on Muscular Strength, Sport Science Research, 2004(4).

A rising of the material thickness in the outer areas of a circular sheet metal blank is enabled by preventing the lateral material flow.
The displaced material is flowing laterally.
The material is plasticised up to a larger strain and more material is displaced into the mould.
References [1] Allwood, J.M., Cullen, J.M., Sustainable Materials – With Both Eyes Open, Uit Cambridge Ltd., 2011, ISBN 9781906860059
[5] Han, X., Hua, L., Comparison between cold rotary forging and conventional forging, Journal of Mechanical Science and Technology 23 (2009) 2668-2678

The researach performed within the scope of this topic involved a large number of experiments, including tensile and bending tests, hardness and toughness, as well as metallography and fractography tests, in order to determine the mechanical properties of the materials and the welded joints in detail, along with their microstructures and their influence on the obtained test results.
These values correspond to the parent material, since fracture occurred in it (as expected).
While ANSYS offers numerous benefits in terms of fatigue crack growth simulation, it does not have the ability to allow crack growth through different materials (both in terms of mechanical properties and Paris coefficients), thus it was necessary to come up with an alternative way of achieving this goal.
Acknowledgement The authors of this paper would like to thank the Ministry for Education, Science and Technological Development of Republic of Serbia for its support of project TR 35040.
Božič, Numerical determination of Paris law constants for carbon steel using a two-scale model, Journal of Physics Conference Series 843