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Online since: June 2007
Authors: John A. Akpobi, P. Oboh
Airiohuodion: Computer-Aided Design of Helical Gears, to appear in Nigerian Journal of Engineering Management (NJEM), (2005)
Lawani: Computer Aided Design of Flywheels, Advances in Engineering Software (Elsevier Publishers), Vol. 37, No. 4, (2006),p. 222-235 http://www.sciencedirect.com/science/journal/09659978 [9] J.A.
Akpobi: Computer Aided Design of Rolling Bearings 1, Journal of Civil Environmental Systems Engineering, Vol. 2.
to valve acceleration N H Depth or height of tion mm h Lift of the 2 ( ) ( ) ( ) ( / ) c e es s T Thickness of cylinder wall mm T Equivalent twisting moment on the crankpin Nmm T Equivalent twisting moment on the shaft Nmm T Maximum shear stress N mm t Thickness of cran ( ) ( ) ( ) ( ) ( ) ( ) ( fw wB f k web mm t Thicknessof crankweb mm t Flange and web thickness mm w Width of crank web mm W Total load on the valve N W Buckling load N W Weight of the flywheel acting downwards 4 2 2 2 ) mod ( / ) ( / ) ( ) ( / ) ( / ) b c ct N Z Section ulus mm Kg Allowable shear stress in crankpin N mm Maximum compression of the spring mm Bending stress N mm Compressive stress N mm Perm ϑ σ σ σ σ 2 2 ( / ) ( / ) h t issible compressive stress of the material
of the tappet N mm Permissible circumferential or hoop stress for the cylinder N mm Allowable tensile stress for the material of the bolt σ σ 2 2 ( / ) ( / ) ( / ) s N mm Allowable shear stress in the shaft N mm Angular speed of the engine rad s τ ω
Online since: May 2015
Authors: Won Jun Park, Han Seung Lee, Hyun Min Yang, Myung Won Cho
Acknowledgement This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (No. 2012R1A1A2044430).
J: Curing Management of Early-age Concrete at Construction Site using Integrated Wireless Sensor, Journal of Advanced Concrete Technology 12: 91-100.(2014) [4] ASTM C 1074-93, Standard Practic for Estimating Concrete Strength by the Maturity Method
Hover.: Application of Maturity Approach to Setting Times, ACI Materials Journal 96(6): 686-691.(1999) [6] Freisleben Hansen & Pederson, J.: Maturity Computer for Controlled Curing and Hardening of Concrete, Nordisk Betong 1: 19-34.(1977) [7] Carino, N.
Journal of Cement, Concrete and Aggregate 6(2): 61-73.(1984)
Online since: September 2014
Authors: Hai Tao Wang, Wen Xue Li, Jing Gu, Ping Yan
Acknowledgements The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China under Grant No.41272347.
Canadian Geotechnical Journal.
Applied Mechanics and Materials.
Journal of Geophysical Research.
Journal of Rock Mechanics and Geotechnical Engineering.
Online since: September 2013
Authors: Jing Shi Shangguan, Cheng Zhi Fan
Reference [1] Junjie Zhou, Chengzhi Fan, Yunyue Ye: Journal of Zhejiang University: Engineering Science In Chinese, Vol. 44 (2010), p. 1548-1552 [2] Z.Q.
Jagiela, et al: Electrical Engineering, Vol.85(2002), p. 59-69 [5] Xiuhe Wang, Yubo Yang and Dajin Fu: Journal of Magnetism and Magnetic Materials, Vol. 267 (2003), pp.88-85 [6] Ting Liu, Shoudao Huang, Jian Gao: International conference on Electrical Machines and Systems (ICEMS), 2010, p. 1073-1076 [7] Luke Dosiek, Pragasen Pillay: IEEE Transactions on Industry applications, Vol. 43 (2007), p. 1565-1571 [8] Weibao Chen, Chengzhi Fan,Yunyue Ye: Journal of Harbin Engineering In Chinese, Vol. 32 (2011), p. 943-947 [9] Thomas M.
Online since: December 2006
Authors: Guang Qi Cai, Chang He Li, Shi Chao Xiu
Experiments were performed with plane grinder M7120 and workpiece material Q235A.
The workpiece material is 45# steel with hardness of HRC50.
Acknowledgements This research were financially supported by the National Natural Science Foundation of China (Grant No. 50475052) and the Specialized Research Fund for the Doctoral Program of Higher Education (Grant No. 20040145001).
Cai: Journal of Northeastern University (Natural Science), Vol.26 (2005) No.6 pp.578-581
Online since: October 2009
Authors: Jin Yi Lee, Jung Min Kim
It uses Hall sensors arrayed on a cylindrical surface and inserted into a pipe of ferromagnetic material.
Acknowledgement This work was supported by the Korea Science and Engineering Foundation(KOSEF) grant funded by the Korean government(MEST).
Journal of Mod.
Lim: Key Engineering Materials Vol. 306~308 (2006), p. 241~246
Kim: Key Engineering Materials Vol. 353~358 (2007), p. 2375~2378.
Online since: September 2012
Authors: Kun Qiao, Chun Lei Zhang, Bo Zhu, Zhi Tao Lin, Ben Xie, Shi Lei Zhang, Wen Sheng Xu, Fei Zhong
Effect of different layers of glass cloth on carbon fiber reinforced hybrid composite core Chun-Lei Zhang1,a, Kun Qiao2,b,Bo Zhu2,c,※ , Zhi-Tao Lin 2,d, Ben Xie 2,e, Shi-lei Zhang3,f, Wen-Sheng Xu2,g, and Fei Zhong1,h 1Electric Power Research Institute of Guangdong Power Grid Corporation, Guangzhou, Guangdong Province, P.R.CHINA.510080 2 Carbon Fiber Technology Research Center of School of Materials Science and Engineering, Shandong University, 73 JingShi Road, Jinan, Shandong Province, P.R.CHINA. 250061 3 QingDao Transfomer Group Co.
Fig. 3 Process flow of carbon fiber reinforced hybrid composite core Characterization Three point bending test was taken by universal material testing machine at room temperature with loading speed of 2mm/min.
Journal of functional materials, Vol.40 (2009), p.1993-1995
Online since: January 2015
Authors: Shou Long Zhang, Yan Bin Huang, Wei Ling Huang, Liu Gang Du, Jin He Gao
Realistic material stress-strain models can be used to characterize uniaxial spring (or fiber).
The number of the spring depends on material properties, section size and reinforcing bar arrangement.
The spring initial stiffness and strength-displacement are simply calculated as: (of i-th spring) fc=σc.Ai , dc= εc.pz (for concrete) fsy=σsy.Ai, dsy=εsy.pz (for steel) Where K0i = initial stiffness of i-spring, Ei = the material young's modulus, Ai = the spring governed area, and pz the length of assumed plastic zone. σc, εc are the concrete material compression strength and corresponding strain, and σsy, εsy are the steel material yielding stress and strain.
Acknowledgements This work was financially supported by the Jiangxi Science Foundation (20132BAB216007), scientific research fund of Jiangxi provincial education department (GJJ13440) and scientific research fund of East China Institute of Technology (DHBK201109).
References [1] Kang-Ning Li and Shunsuke Otani, "Multi-Spring Model for 3-Dimensional Analysis of RC Members", Journal of Structural Engineering and Mechanics, Vol.1, No.1, 1993, pp. 17-30
Online since: February 2015
Authors: Attila Kovari
In a hot rolling mill stand the slab is passed between a set of work rolls and this type of rolling permits large deformations of the metal to be achieved with some rolling cycles (Fig. 1). [1] Hot rolling is primarily concerned with manipulating material shape and geometry rather than mechanical properties.
This is achieved by heating the slab and then applying controlled load to adjust the gap between the work rolls which form the material to a desired size.
Kovari, Dynamic Model of Rolling Mill’s Electro-Hydraulic Gap Adjustment System, Materials Science Forum 659 (2010) 411-416
[6] Rudkins N., Evans P., Mathematical modelling of set-up in hot strip rolling of high strength steels, Journal of Material Processing Technology 80–81 (1998) 320 -324
Online since: May 2011
Authors: Xin Gang Ai, Dong Wei Zhang, Nan Lv, Jun Tao, Sheng Li Li
Simulation and Productive Practice of 60 Tons Huge Rectangular Ingot by Wind Cooling Xingang Ai1, a, Shengli Li1,b, Dongwei Zhang2,c, Nan Lv1,d and Jun Tao1,e 1University of Science and Technology Liaoning, Anshan, Liaoning, China 2Anshan Iron and Steel Group Corporation, Anshan, Liaoning, China aaixingang@126.com, blishengli66@sohu.com, czdwhyc_2005@163.com, dlvnan999@yahoo.com, etaojun2288@126.com Keywords: Huge rectangular ingot, Mould casting, Simulation, Wind cooling Abstract.
Comparative Mathematic Simulation between Outside Wind Cooling and Air Cooling The intensive cooling process (such as continuous casting) can greatly accelerate the solidification of the molten steel[5], element segregation in the billets can be effectively controlled, while the productivity, material yield, and steel quality can be significantly improved when compared to traditional die casting products.
Yang: Journal of Materials Processing Technology, Vol. 67 (1999), p. 195
Beckermann: Metallurgical and Materials Transactions A, Vol. 30 (1999), No.5, p.1357.