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Online since: June 2014
Authors: Eugeniy V. Seko
For such relations in science relatively long used method of dimensions.
Limit values of the stresses for materials slabs and beams σmins = 2∙106 Pa, σminb= 2∙107 Pa, σmaxs = σmaxb = 1.0 108 Pa.
This ambiguity persists in the response to the optimal values of the cost of the plate material and Cs slab thickness h.
At the same appreciation of the plate material will be offset by a corresponding decrease in its volume, if we use the expression for the thickness of the plates, driven by the optimal solution.
Operations Research, 53(6): 899-932, 2005. [4] A.K.Ojha and K.K.Biswal.Posynomial Geometric Programming Problems with Multiple Parameters JOURNAL OF COMPUTING, VOLUME 2, ISSUE 1, JANUARY 2010, ISSN 2151-9617.
Online since: May 2013
Authors: Hong Xu, Jing Hui
Xinjiang is the region of textile material of our country.
There are many kinds of material have anion purification to water and air, such as tourmaline, various activated carbon, adsorption resin and so on.
If we use water resistance of glass fiber reinforced plastic materials instead of metal material, increasing the motor seal can achieve better results.
The Research on the Method of Textile Air-conditioner Deliver Wind and Damp[J].Shang Hai Textile Science and Technology,2008,36(3):5-7
The Application and Energy Conservation of Spray fan in Xinjiang Textile Industry [J].Xinjiang Engineering Institute Journal, 1998, (3):235-238
Online since: May 2012
Authors: Ye Ling Li, Xin Yu Wang, Yin Fei Xia
Restrained by the style of architectures, economic development, material and technique of that time, those buildings are too simple in styles and are too old to represent the image of Changchun.
References [1] Wang Gang, Shi Teimao, Ecological Expressing of Architecture Surface,Journal of Tianjin Institute of Urban Construction, 10(4), 2004:232~236 [2] Lin Yucheng, Heat Preservation Technology and Energy Saving Materials for Outer Walls, Fujian Building Materials, 2,2006:232~233 [3] Wang Qingsheng, Technology for Outer Wall Heat Preservation in Present Architecture Energy Saving Modification, Construction Science and Technology, 2005.II:44~45 [4] Lu Di, Life and Death of Architecture---Research on Reutilization of Historic Architectures[M], Nanjing: Southeast University Press, 6, 2004 [5] Chang Qing, The Living Strategy of Architecture Inheritance---Designed Experiment for Protection and Utilization[M], Shanghai: Tongji University Press, 2003 [6] Zheng Lei, Surface and Energy Saving of Architectures, Chinese and Overseas Architecture, 2006(4):92~93 [7] Xu Sujing, Esthetics in City Design, Beijing: China Architecture and Building Press, 2007 [8] Zhong Huanan, Zhang Qinnan
Online since: November 2012
Authors: Sun Hui Yao, Wen Hsien Kao, Yean Liang Su, M.S. Chen, Hsi Chuan Huang
In recent years, researchers have developed a new class of DLC coating referred to as a-C:Me or Me-C:H coatings, in which the original a-C or a-C:H film is doped with additional metal materials in order to improve its adhesion strength and tribological properties [9-13].
The PCB (FR-4) specimens used in the drilling tests measured 410 x 500 x 1.66 mm and comprised eight copper layers bonded with a resin epoxy material reinforced with fiberglass.
Journal of Refractory Metals & Hard Materials Vol.27 (2009), p.421
[7] Yan Xingbin, Xu Tao, Chen Gang, Yang Shengrong, Liu Huiwen: Applied Surface Science Vol.236 (2004), p.328
Online since: September 2009
Authors: Ya Dong Gong, Yu Jiao Liu, Jun Cheng, Fan Xu, Jian Qiu
To find the optimum setting parameters and grinding angle should take into account grinding inaccuracy, surface roughness, grinding allowance, workpiece material characteristics and dimensions, and abrasives material characteristics etc..
  Model of Wheel Wear in Accuracy Grinding Area of Quick-point Grinding A commonly used parameter to express resistance to wheel wear is the G ratio, which is defined as the volumetric ratio of material removal to the wheel wear [5].
In Quick-point grinding, the G ratio is certain, so the ratio of radial wheel wear volume per width sV to material removal amount per width wV  is a constant 1C .
Acknowledgements The authors would like to acknowledge the support of No. 50775032 by National Natural Science Foundation of China.
Pop: International Journal of Machine Tools & Manufacture, Vol. 45 (2005) No.10, pp.1120-1123
Online since: July 2011
Authors: Ming Jie Ma, Shan Xiu Huang, Quan Run Liu
Analysis of the formation mechanism of hollow and cricoid stria in formed coke Mingjie Ma, Qunrun Liu and Shanxiu Huang School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo,China Mingjie8@163.com Key words: formed coke; hollow structure; cricoid stria; mechanism Abstract: Under certain experimental conditions, the formed coke with hollow and cricoid stria.
When a low-rank coal and Thin coal agent mixed coke material preparation, and bonding of coal and volatile to the index value is the coincidental change, if cooperate with coal needs to improve the bonding, then it must improve low coal metamorphic grade with proportion, meanwhile, cooperate with coal feeding of volatile matter index also increases accordingly.
The analysis of the mechanism of coke hollow and annular stripe conclusions to other coal-based mechanism of preparation of carbon materials also have important guiding significance.
Journal of Engineering Thermophysics, 1998,19(5): 601-605.
Online since: December 2014
Authors: Ming Li, Xin Liu, Lin Li Tan, Jun Xia Chen
The whole bridge structure model is shown in figure 2.And make the following basic assumptions: (1)The adhesives between strengthening layer and the original structure is good; (2) Keep flat material deformation; (3) Does not consider the stress of the steel bar.
Fig.2 Finite element model of Structural Material parameters.
Old main arch ring, abdomen arch ring, retaining wall and pier are composed by mortar rubble, increased cross sections adopt C30 concrete, material physical and mechanical indexes are as follows: (1)The main arch ring, abdomen arch ring, retaining wall, pier: E=5.61×109Pa.Thermal expansion coefficient: α=8.00E-06,fcd=2.67×106Pa,ftmd=3.00×105Pa; (2) Concrete of C30 that use to reinforce the main arch ring: E=3.00×1010Pa.Thermal expansion coefficient: α=1.00E-05,fcd=1.10×107Pa,ftmd=1.04×106Pa;fvd=2.09×106Pa.
Table2 The positive stress of old main arch before and after reinforcement(1×106Pa) The thickness of reinforced(m) Arch feet in small stake Before After 1/4Cross Before After 1/2 Cross Before After 3/4 Cross Before After Arch feet in large stake Before After Strength of materials 0.15 -1.49/0.02 -2.62 -0.71 -2.20 -0.31 -1.85 -0.69 -2.15 -1.39 -2.62 -2.67/0.3 0.17 -2.58 -2.02 -1.72 -2.00 -2.58 0.19 -2.46 -1.85 -1.65 -1.78 -2.46 0.21 -2.34 -1.63 -1.23 -1.61 -2.34 0.23 -2.28 -1.42 -1.14 -1.36 -2.28 0.25 -2.20 -1.20 -1.05 -1.17 -2.02 0.27 -2.08 -1.08 -1.03 -1.08 -2.08 0.29 -2.06 -1.06 -1.02 -1.03 -2.06 0.31 -2.04 -1.01 -1.00 -1.01 -2.04 0.33 -2.03 -1.00 -1.10 -0.95 -2.03 0.35 -2.11 -1.26 -1.18 -1.25 -2.11 Table 2 indicates that trend of the stress decrease quickly when the main arch ring thickness of reinforcement between 0.15 m to 0.25 m, and stress value decreasing trend is moderate between 0.25 m to 0.35 m, layer reinforcement effect is not
Journal of Chongqing Jiaotong University: Natural science edition,2008,27(1); 20- 23
Online since: December 2013
Authors: Hussain Hamoud Al-Kayiem, Abdalellah Omer Mohmmed, Mohammed S. Nasif, Zahid Ibrahim Mohammed
· The material and geometrical behaviour of the pipe is linear and isotropic
Fig. 2. illustrates the crucial inputs for fatigue analysis which are: material properties, local stress properties and loading history.
RQC-100 steel material properties and pipe dimensions are shown in Table 1.
It can be concluded that the period of stress build-up takes longer time than stress damping period in the pipe's material for all simulated slug cases.
Sasanka, "Fatigue Life Prediction of a Parabolic Spring under Non-constant Amplitude Proportional Loading using Finite Element Method," International Journal of Advanced Science and Technology, 46 (2012) 143-156.
Online since: May 2011
Authors: Xun Guo, Yuan Yuan Yu, Ning Wei Wang, Hong Biao Liu
When the lining tensile stress caused by inertial force is more than ultimate tensile strength of lining material, the secondary lining will be cracking, spalling or even collapse.
Constitutive relationships of concrete and steel reinforcement use elastic material model.
Material parameter is given in Table 1.
[3] Information on http://www. cea.gov.cn [4] Tianbin Li: Journal of Engineering Geology, Vol.16 (2008), p. 742-750.
(in Chinese) [10] Weichang Qian, Kaiyuan Ye, in: Theory of Elastic Mechanics, China Science Press (1956).
Online since: May 2015
Authors: Yung Chun Lin, Nien Te Liu, Chang Tzuoh Wu
In his study, he also mentions that in defining the position of a new product, three indexes as new material, new function and new purpose can serve as the course of research and development.
Therefore, in the creative design of bicycles, function and material are very important factors.
Chang’s study propose that the future development of bicycles can be divided into five categories: (1) Use of new materials, (2) Addition of new functions, (3) New riding ways, (4) Introduction of new electronic products, (5) Dedicated developed products depending on respective market requirements [6].
Acknowledgement The authors are grateful to the Ministry of Science and Technology (Taiwan, R.O.C) for supporting this research under grant NSC 97-2221-E-366-005 and MOST 103-2632-E-366-001.
Huang: Theory and Application on Module Design Model – Case Study on Bicycle, Journal of Industrial Design, 109 (2003) 127-134
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