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Online since: March 2011
Authors: Khalil Khalili, Seyed Yousef Ahmadi-Brooghani, Amir Ashrafi
The material of the tube was annealed copper, and a deformable solid model was used to considered deformation of tube during the simulation.
The material properties used are shown in Table 1.
The material properties of annealed C12200 copper alloy Yield strength [MPa] 67.7 Ultimate strength [MPa] 224.45 Young module [GPa] 115 Strength coefficient (k) [GPa] 0.4426 Exponent coefficient (n) 0.368 Fig 5.Finite element model used in the simulations The friction coefficient between the die and tube was set to 0.04.
Farzin, and S.J, Iranian Journal of Science & Technology, Transaction B, Engineering, Vol. 32, No.
Online since: August 2013
Authors: Xiao Liu, Pei Chao Chen, Bing Wang
In the decoration of the room, excessive use of glass materials will make people would worry about the quality of glass material, and on the other hand, people will worry about privacy issues, and may be peeping outside, etc.. ② The psychological needs of different class Different classes mentioned here mainly refer to the different social role.
CHINA SAFETY SCIENCE JOURNAL, 2007, 17(8):70-75 [2] Wen Chai, Brief Talk about the Prospective Need of Interior Environment [J].
Online since: June 2013
Authors: Hai Bo Ma, Quan Yuan, Xia Zhang, Xu Huang
Bioprosthetic heart valve consists of valvular leaflets, supporting stent and sutural ring valvular leaflets made with polymer materials of porcine or bovine pericardial can be opened or closed by ejected blood. [1-2].
Finite Division We assume valve leaflets material’s modulus of elasticity which is 5.4Mpa and its Poisson’s ratio is 0.48 and the thickness of the valve leaflets is 0.5mm.The solid model of the valve leaflets is divided into grid by subprogram of ANSYS software as shown in Fig.3 Figure 3(a).
Acknowledgment This work was supported by grants from Natural Science Foundation of State (No: 31170906) and Clean Mechanical Manufacture (Shandong University)Ministry of Education.
[2] Quan Yuan, Chengrui Zhang, Xiaowei Wang, “Geometrical Design and Finite Element Analysis on the Bioprosthetic Heart Valve,” International Journal of Innovative Computing, Information and Control (IJICIC), vol.3, 2007, pp.1-11
Online since: May 2015
Authors: Mircea Neagoe, Codruta Jaliu, Radu G. Saulescu, Oliver Climescu
The materials were selected and the bearings and the chain type were chosen from catalogues [2].
[2] American Chain Association, Standard Handbook of Chains: Chains for Power Transmission and Material Handling, 2nd Edition, Dekker Mechanical Engineering, 2005
Mechanism and Machine Theory Journal, Volume 46, Issue 12, (2011) 1888-1900
Mechanism and Machine Science, Vol. 13, (2013), 259-268.
Online since: June 2012
Authors: Chao Yong Yan, Yao Jun Yu
This problem becomes even worse with the increasing requirements of product accuracy, the more frequent application of new materials and new machining operations, as, for instance, high-speed and precision machining of hardened steel components [2].
In the turning process, there are system factors (such as tool wear, thermal deformation, etc.) and random factors (such as system vibration, rough material, etc.) impacting the turning quality.
Peng:Symbiosis of modelling and sensing to improve the accuracy of workpieces in small batch machining operations.International Journal of Advanced Manufacturing Technology,vol. 15(1999), p. 699-710
Kishawy:An experimental evaluation of cutting temperatures during high speed machining of hardened D2 tool steel.Machining Science and Technology,vol. 6(2002),p. 67-79
Online since: January 2014
Authors: Michal Kraus, Darja Kubečková
Introduction The buildings sector contributes significantly to the energy and material consumption.
Table 1: SWOT analysis of building airtightness Strengths Weaknesses - The increased life of the structure 0.1 - The increased purchase costs 0.4 - The reduction energy consumption 0.4 - The need of HVAC equipment 0.3 - The elimination of mold inside the structure 0.2 - The need to inspection airtightness measurements 0.2 - The exclusion of interstitial condensation 0.3 - The increased cost of training craftsmen 0.1 Opportunities Threats - Possibility of reducing global energy consumption 0.5 - Escalation of trade policy of energy companies 0.8 - Possibility of reducing global green gas emissions 0.3 - Possible to feeling constraint and non-breathability. 0.2 - Development of building materials and technology 0.2 Conclusions The points of SWOT analysis show that sufficiently airtight building envelope is an important competitive advantage compared to conventional construction.
[2] Directive 2010/31/EU of the European Parliament and of the Council of 19 May 2010 on the energy performance of building (recast), 2010, Official Journal of the EU, L153
Singapore: Global Science and Technology Forum (2013)
Online since: January 2014
Authors: Pei Xue, Jun Yuan, Jin Wang, Xin Zhang, Jing Jing Fan
The development of shale of the two group strata, provides a strong material base for generated oil and gas.
Reference [1] Information on http://www.eia.gov [2] Yuan Jun, Wang Yanbin: Accumulation factors Analysis of Coal-Bearing Strata Shale Gas in Qinshui Basin, dvanced Materials Research Vol. 868 (2014) pp 121-124
(In Chinese) [4] Dong Bingxiang: Research of the Petrophysical Property of Shale Gas Reservoirs, Journal of Xi'an Shiyou University (Natural Science Edition), Vol. 28 (1) (2013), p.25-28.
Online since: January 2015
Authors: Jin Li, Ruo Chen Zhao, Jian Hua Wang
Because of intensive management of human, financial, and material, State Grid made for subordinate provincial power supply enterprises and secondary branches, municipal power supply enterprise as a secondary branch have no right to make basic project standards, evaluate budget and have no right of purchase and disposition of assets such as equipment and materials.
Research on fine management of finance in power supply company Guangdong Science & Technology, 2012, (21):168-169
Journal of Zhongnan University of Economics and Law, PKU CSSCI, 2011, (5)
Online since: June 2014
Authors: Jing Ping Yuan, Fen Fen Yu
Because of the same resistance material used for the potentiometer and its corresponding fixed resistors, their main parameters are similar.
References [1] He Shaoqiang: The basic properties of the potentiometer, Selection accordance and Using principles Vol.6, (1996), p. 42-48 in Electronic Components and Materials
Liming, in: Test and realization of potentiometer noise based on frequently domain analysis method, Vol.12, (2006) , p.92-94 in Chinese Journal of Scientific Instrument [3] Information on http://www.stcmcu.com [4] Wang Furui: Monolithic Microcomputer Control System Design Encyclopedia (Beijing: Beijing University of Aeronautics and Astronautics Press, 1999)
[6] Wang Daheng: Modern Instrumentation Technology and Design (Science Press, Beijing, 2002)
Online since: November 2014
Authors: Lei Yu
The material consumption intensity IU curve.
The evaluation model is the use of material consumption and the ratio of economic indicators to judge on the relationship between the two.
The essence of which use the material consumption of unit wealth to reflect the efficiency of resource utilization.
Zhuang, China's low carbon economic development way and potential analysis, Pacific Journal, 17(11), 2005, 79-87
Zhao, Thinking about green economy theory and practice, Social Science Research, 16(2), 2006, 44-47.