Search results

Failure Analysis of Automobile Redirector Yan Luo1, 2, a, Yiliang You1, 2, b and Zheng Zhang1, 2, c 1Institute of Materials Science and Engineering, Beihang University 2 Key Laboratory of Aerospace Materials and Performance (Ministry of Education), Beijing 100191, China alawyer0422@163.com, byyl@buaa.edu.cn, czhangzh@buaa.edu.cn Keywords: Failure analysis; Fracture; Automobile redirector.
Materials and Methods The material used in the valve shell is ZL107, an Al-Si-Cu alloy, the chemical composition of which is listed in Table 1.
Hence, it is judged that the fracture reason of the No.3 part is excessive Fe element remaining in the material, which is caused by incorrect control of the modification treatment.
It is another evidence of the view that the material’s plasticity decreased because the immoderate Fe-phase makes the alloy hard and brittle.
References [1] Binyi Liu, Jun Ma, Haiyan Wang: Science and Technology Innovation Herald “In Chinese”,2008, 1: p.28 [2] Cuilin Wang, Huaji Li, Hansong Xue, Huifang Hu: Journal of Chongqing University (Natural Science Edition) “In Chinese”, 2005, 28(5): p.51-53 [3] Weicheng Sun, Shurong Zhang, Aiqin Hou.

Introduction Sapphire (α-Al2O3) is one of the perspective materials nowadays due to its high hardness, high melting temperature, chemical inertness, thermodynamic stability.
Materials. 1 (2013) 111-117
Science. 15 (2017) 9-14
Tartaglia (Eds.), Sapphire: Structure, Technology and Applications, Nova Science Publishers, New York, 2013, 101–118
Guigen, Thermal stresses and cracks during the growth of large-sized sapphire with SAPMAC method, Chinese Journal of Aeronautics. 20 (2007) 475–480

Application of computer-simulation-aided architecture in environment design with Chinese elements Jing Hu Wuhan University of Engineering Science, Wuhan 430200, China hujing11111@yeah.net Keywords: computer-simulation-aided, Chinese element, environment design Abstract.
It synthesizes computer science and engineering design method.
Acknowledgement This work is supported form A Project Supported by Humanities and social science research projects of Hubei Provincial Education Department [14G518] provided by Jing Hu.
Architectural Journal, Vol. 12 (1998), p. 32 [3] Yu Xueming, Prospect of polyurethane in shoemaking materials.
Science and Technology Information, Vol. 3 (2008), p. 133-138 [6] Geng Yuxia, Qu Yuxiang: The Research on Educational Reform and Practice in Mathematics Teaching of Higher Vocational School.

Pendry: Science, Vol. 285 (1999) No.5434, p.1687
Brust: Advanced Materials, Vol. 13 (2001) No.23, p.1800
Willner: Science, Vol. 299 (2003) No.5614, p.1877
Compton: Analytical Science, Vol. 22 (2006) No.4, p.567
Oyama: Journal of Electroanalytical Chemistry, Vol. 577 (2005) No.2, p.273.

Materials and Methods Groundwater sampling and chemical analysis.
Acknowledgements This work was financially supported by the auspices of Major Science and Technology Program for Water Pollution Control and Treatment (No. 2013ZX07202007-004) and Key Projects in the National Science & Technology Program (No. 2011BAJ06B02).
Journal of Agro-Environment Science, Vol.5 (2007), p. 1933-1936 (in Chinese) [6] State Environmental Protection Administration of China (SEPA).
China environmental science press.

Now analyses the model of gear transmission system, the main parameters of gear pairs are in the table 1: Table1 Main gears parameters of gear transmission system Tooth number Z Modification coefficient Material Weight (kg) Elastic modulus (Mpa) Poisson ratio Density (kg/mm3) Motor gear 17 0.5407 40Cr 1.03 2E+5 0.28 7.85E-6 Drive gear 26 0 20CrMnTi 0.51 2.07E+5 0.25 7.8E-6 Power output gear 17 0.5407 40Cr 0.4 2E+5 0.28 7.85E-6 Establish the dynamic model of gear transmission system, as shown in Fig.2.
The establishing process is as follows: (1) Set up rigid body under Pro/E environment; (2) Use Mech/Pro module to lead into ADAMS environment, then, make a define of the model material and gravity environment; (3) Refer to the establishing method of one gear pair to append all constraints and kinematic pairs; (4) Through revolute joint to append drive motion and resistance moment; (5) Append the collision contact of every meshing gear, achieve the meshing simulation of every gear pair.
Acknowledgement We would like to express our appreciation to Natural Science Foundation of Liaoning Province (Grant No. 201102167), Aeronautical Science Foundation of China (Grant No. 20110450001), and the National Science Foundation for Post-doctoral Scientists of China (Grant No. 20100481201).
Journal of Quality Technology Vol.37 (2005) p. 115-129 [6] Soo E.
Technometrics, Vol.24(1960), p.455-476 [8] Sun Zhili, Chen Liangyu, Practical Mechanical Rereliability Design Theory and Method [M], Beijing, Science Press Vol. 15(2003), p. 15-17

A Low-Voltage Distribution Box With Energy Monitoring And Carrier Communication Functions Zhou Wenqiong1,Li Dajun2 1.Guangdong Institude of Science and Technology, Zhuhai 519090,Guangdong,China; 2.Zhuhai Jie Tong Ni Electronics Co.
Applications System examples In the case of the Guangdong Vocational College of Science and Technology in power management, the network system is distribution area used as the center of 11 unit’s box.
Project funds: National natural science foundation of "network service aggregation and coordination method based on granular computing research" (No. 61003253); Innovation fund for small and medium-sized science and technology enterprises in guangdong province "Listener the data analysis and operation of the service auxiliary decision system" (No. 1312212200105) References [1] Yin Rui, Dong Xingang.
Electronic components and materials, 2013,32 (3) :42-45
Chinese Journal of Scientific Instrument, 2011,32 (08) :1763-1770

Flexural and Crack Behaviors of RC Beams Applied with UHTCC Cover Subjected to Rebar Corrosion Xinhua Cai 1,a, Shilang Xu 2,b, Zhen He1,c 1State Key Laboratory of Water Resouses & Hydropower Engineering Science, Wuhan University, Wuhan 430072 2College of Civil Engineering & Architecture, Zhejiang University, Hangzhou 310058 aemail: caixinhua_whu@yahoo.com.cn, bemail: slxu@zju.edu.cn, cemail: evahezhen@126.com Keywords: ultra high toughness; corrosion of reinforcing bar; corrosion expansive cracking; strain hardening; multiple cracking Abstract.
Prolonging occurrence time of rebar corrosion in reinforced concrete structures could be achieved by increasing the thickness of cover, decreasing the ratio of water and cement materials, applying the polymer concrete or mortar, epoxy-resin coating bars or adding anti-corrosion admixture[2].
Acknowledgement The authors express their gratitude for financial support from the 973 project (2009CB623200) and National Natural Science Foundation of China (50972109).
References [1] Weyers RE: ACI Mater J Vol. 95 (1998), p. 445-453 [2] Andrade C, Alonso C and Molina F J: Mater Struct Vol. 26(1993), p. 453-464 [3] Li V C, Leung C K Y: ASCE J Eng Mech Vol. 188(1992), p. 2246-2264 [4] Xu Shilang, Li Hedong: China Civil Engineering Journal Vol. 41(2008), p. 45-60 [5] Xu Shilang, Li Qinghua: Science in China Series E: Technological Science Vol. 52(2009), p.363-378

Acknowledgements This work was financially supported by Philosophy and Social Science Fund Project of Hunan Province (No.12YBA040), Scientific Research Project of Education Department of Hunan Province (No.12C0535), Social Science Fund Project of Hengyang City (No. 2012B(F)22), Project of University Students’ Research Learning and Innovative Experiment Plan of Hengyang Normal University Nanyue College (No.NYD201302).
International Journal of Science Education, Vol. 35 (2013) No. (5), p.713
Advanced Materials Research, Vol. 600 (2012) No.1, p.29
Leisure Science, Vol. 27(2005) No. (3), p.231

Nowdays naturally occurring polymers are prefered over synthetic materials due to their properties of low pollution, low cost, non-toxicity and biodegradability[2-4].
Acknowledgment This work was financially supported by the grants from National Science Foundation of China (No.50874092), Scientific Research Program Funded by Shaanxi Provincial Education Department (No.2013JK0647) and Scientific and Technological Plan Projects of Shannxi Province of China (No.2012KJXX-40).
Journal of Petroleum Science and Engineering, 1996, 14, 221-230
Shaanxi Science and Technology Press, Xi’an, China, 2001, pp. 24
Progress Polymer Science, 2011, 36, 218–237