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Online since: April 2011
Authors: Philippe Lorong, Alexis Perez Duarte, Arnaud Larue
Introduction As the material costs increases, the proportion of flexible parts increases in the industry.
The characteristics of the material are given by table 1.
Budak, Analytical stability prediction and design of variable pitch cutters, J. of Manufacturing Science and Engineering, 121:173–178 (1999)
Dombovari, Chatter Stability of Milling in Frequency and Discrete Time Domain, CIRP Journal of Manufacturing Science and Technology, 1:35–44 (2008)
Insperger, Full-discretization and semi-discretization for milling stability prediction: Some comment, International Journal of Machine Tools & Manufacture, 50:658-662 (2010)
Online since: May 2014
Authors: Wei Yan Liang
The Design of Flash Network Courseware Weiyan Liang Jiaying University, School of Education Science, Meizhou, Guangdong, 514015 liangweiyan@jyu.edu.cn Keywords: Flash, Network Courseware, Design.
Production Material Collection.
The multi-media materials cover all audio and visional material adopted in multi-media courseware.
The material collection shall be subject to needs of script.
The excellent courseware shall integrate science, art and technique, so as to maximize the potential of course ware, strengthen presentation effect and improve the quality of multimedia courseware.
Online since: September 2013
Authors: Qiu Xia, Xin Zhang, Xiao Rui Ding, Hong Tao Yang
(refer with: fig 2), and assumptions as the following : In order to simulate loaded analysis and calculate value, consider tool, tool rest, and slip sheet material as a whole.
In general, according to the processing parameters, choose carbon steel as the workpiece material, cutting speed , feeding the f = 0.5 mm/r, turning back .
According to the cutting force empirical formula: [5-6] (1) In the formula, ─depend on the coefficient of processed materials and cutting condition; , , ─index of cutting parameter in formula; ─ among the component force calculation, when the actual machine tool processing situation and the empirical formula used situation are inconsistent, multiply-add of the correction coefficient of multiple conditions influence on cutting force ,each coefficient, index and the correction coefficient value can refer to the handbook of metal cutting. select ,,,, = 0.9807 ,then calculate the experience value of the radial cutting force: .
Therefore to reduce the machine tool geometric error under the cutting force influence, a reasonable choice of a strong strength materials, reasonable design which increase the strength of machine tools; In order to reduce the stress, the cutting parameters of machine tool should be adjusted; According to the cutting condition, software compensation on the machine tool geometric error are quite necessary.
Journal of mechanical engineering, Vol. 12 (2002) No.38, p. 151-154
Online since: January 2005
Authors: Jingyu Hyeon Lee, Yi Yeol Lyu, Mong Sup Lee, Jin Heong Yim, Sang Youl Kim
Journal Citation (to be inserted by the publisher) Copyright by Trans Tech Publications Characterization of Nanoporous Low Dielectric Polysilsesquioxane Thin Films Jingyu Hyeon-Lee *1, Yi Yeol Lyu 1, Mong Sup Lee 2 , Jin-Heong Yim 1 and Sang Youl Kim 2 1 Electronic Materials Laboratory, Samsung Advanced Institute of Technology, Suwon, 440-600, Korea 2 Department of Chemistry, Korea Advanced Institute of Science and Technology, Taejon, 305-701, Korea.
Introduction As the minimum geometry of microelectronic devices continues to shrink, the conventional dielectric material, silicon dioxide (k~ 4.0), is no longer adequate for next generation integrated circuits.
Therefore, new materials with low dielectric constants are required to minimize the RC delay.
Current chip manufacturing processes require the insulating materials to have low moisture uptake, good mechanical strengths, and thermal stability, etc.
Jun-Hee Hahn of Korea Research Institute of Standards and Science is acknowledged for hardness and modulus measurements.
Online since: November 2010
Authors: Zhi Bo Yang, Jiu Hua Xu, Gui Bin Zhang
Acknowledgement This research was supported by the financial supports from Jiangsu Natural Science Fund, P.
China (BK2006723), Natural Science Fund by the Education department of Henan Province P.R.
XU and Y.C.FU: Key Engineering Materials, Vol. 359-360.(2008), pp 43-47
TSAI and S.T.LIN: Materials Chemistry and Physics, Vol. 84 (2004), pp. 251–258
Chinese Journal of lasers, Vol. 36 (2009), pp 3079-3083.
Online since: September 2013
Authors: Pan Zhang, Jing Xiang Fang, Lu Yang Jing, Wang Tai Yong
The principle of magnetic flux leakage testing The magnetic flux leakage testing is a kind of nondestructive testing technology that finds defects through detecting magnetic flux leakage forming on the surface of the material due to the defects after the ferromagnetic material has attained saturation magnetization[2].
Tubing magnetic flux leakage testing is for such high magnetic permeability materials as the tubing (steel pipe).
As shown in Fig.1(a), if a tubing with no surface cracks, no internal defects and no inclusions is in saturation magnetization, all its magnetic lines of force through the magnetic circuit made ​​of ferromagnetic materials in theory.
Acknowledgment This work was supported by National Science & Technology Pillar Program (2013BAF06B00), Doctoral Fund of Ministry of Education of China (20100032110006), Key Projects of Science and Technology Support of Tianjin(12ZCZDGX01600).
[3] Wang Taiyong, Jiang Qi, Study on quantitative recognition technology of pipeline defect, Journal of Tianjin University. 36 (2003) 55-58
Online since: December 2011
Authors: Meng Song, Yun Li Feng, Shao Qiang Yuan
Microstructure Evolution of Undercooled Austenite during Deformation for Medium-Carbon Si-Mn Steel Yunli Feng1,a , ShaoQiang Yuan2,b and Meng Song 1,c 1Metal Material Engineering Department, Hebei Polytechnic University, Tangshan Hebei, 063009 China 2Department of Electro-mechanical Engineering, Tangshan College, Tangshan Hebei, 063000 China afengyl@heut.edu.cn,bshaoqiangyuan@163.com, csm_162@yahoo.com.cn Keywords: Medium-carbon Si-Mn steel, Undercooled austentite, Microstructure evolution, Deformation induced transformation, Carbide spheroidization Abstract.
In this paper,microstructure evolution of undercooled austenite during deformation for has been studied, Also, the carbides spheroidized mechanism during deformed process has been discussed, it provide the necessary theoretical bases on producting low-cost, high strength toughness steel. 2 Test materials and methods Transfer bar of medium-carbon Si-Mn steel producted by industria are investigated in this experiment, And it’s composition(in mass fraction) areas follows: 0.37C, 0.80Si, 1.00Mn, 0.011S, 0.015P.
Acknowledgements The authors express their gratitude to the financial support of the Natural Science Foundation.
Journal of University of Science and Technology Beijing,Vol. 30 (2008) No.4, p. 368-373
[4] Park J, Song D H, Lee D,Choo W Y: Ultrafine Grained Materials Ⅱ,Settle:The Minerals,Metals & Materials Society, p. 275,(2002) [5] Storojeva L,Kaspar R,Ponge D:Mater Sci Forum, p. 426-432,(2003) [6] Kotobu Nagai: Second Phase of Ultra Steel Project at NIMIS.
Online since: July 2014
Authors: M.A. Essam Ahamed, K.N. Balan, Amaladas John Rajan, S. Manimaran
The surface property of material will be enhanced by deposition of coating powders such as metal oxides and ceramics like aluminium oxides, tungsten carbide, nickel chromium etc. which improves micro hardness, corrosion and wear resistant resistance property.
The optimization of process parameters had a major effect on coated material property and it was experimentally investigated by S.Kant PEC university of technology Chandigarh (August 2013) for Mullite based coating using Slurry Spray by taguchi technique.
Ramanaiah, International Journal of Advanced Science and Technology Vol. 57, August, 2013
[7]Optimization and Characterization of High Velocity Oxy-fuel Sprayed Coatings: Techniques, Materials, and Applications by Maria Oksa ,Erja Turunen, Tomi Suhonen 1,Tommi Varis and Simo-Pekka Hannula 19 August 2011.
Online since: September 2014
Authors: Kun Sheng Zhang, Hua Yang, Li Zhen Ma, Yu Jing Tian, Yao Hua Guo, Ying Chun Zhu
Materials and Methods Reagents and Fish patty ingredient All chemicals and reagents used in this study were of AnalaR grade and purchased from Sigma-Aldrich or Sinopharm Chemical Reagent Co.
Meat Science, 1982,7, 29–36 [6] Bourne, M.
Journal of Food Protection, 2004, 67(8): 1709-1718
Journal of Food Engineering, 2007, 82 (2): 128-134
Meat Science, 2010, 85: 506-514
Online since: September 2013
Authors: Qing Guang Yang, Feng Liu, Luan Xiao
Earth pressure on static compaction pile for pile driving Basic hypothesis condition.(1)soil is homogeneous isotropic ideal elastic-plastic material.(2)the constitutive law of soil obeys Mohr-Coulomb yield criterion.
Acknowledgements The authors gratefully acknowledge the financial support provided by national natural science foundation of china(project No. 51208194) and education department of hunan province(project No,11C0419) References [1] H.
Chinese Journal of Geotechnical Engineering,2009,31(9):1398-1401 [12] L.Zhang,X.N.Gong, J.L.Yu.Solutions for laterally loaded single pile by nonlinear subgrade reaction method[J].
Chinese Journal of Geotechnical Engineering,2011,33(2):309- 314
Journal of Soil Mechanics Foundation Division.American Socialy of Civil Engineering,1972,98(3):265-289.