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Online since: February 2012
Authors: Zhuo Li, Dan Hua Chen
In order to have a suitable circulatory system of clod side, to build the model of circulatory system of cold side by CATIA, it adopts fluid simulation software CFdesign to access to simulation of temperature field
Introduction
Since thermoelectric conversion was discovered , main research direction of most of scholars is how to seek efficient thermoelectric conversion materials , but how to control was as little consideration, which might due to limited research on the thermoelectric conversion model and the temperature difference in the ideal theoretical conditions[1]~[3].
Hi-Z had used HZ13 module with the power of each module up to 13 W.That is to say, the module condition is more mature, so we maybe pay attention to ,which is affected by Material itself, thermal conductivity, thermal radiation and the current generation of Joule heat, so the cold side also needs a system to control its temperature.
Now in order to save time and materials, ultimately having an idealized system, it adopts technology of computer simulation.
Beijing: Higher Education Press, 2002 [8] Simone Dalola, Marco Ferrari, Vittorio Ferrari, Michele Guizzetti,Daniele Marioli and Andrea Taroni, Characterization of Thermoelectric Modules for Powering Autonomous Sensors, IEEE Transactions on instrumentation and Measrement, Vol.58, No.1, Jan, 2009 [9] Chang XueFang; Bo YuCheng; XuJian; Numerical Simulation for the Flux Coefficient of Gas-guide Hole Using CFDesign [J].journal of mechanical engineering and automation 2006 06 [10] An Analysis of the Characteristics of the Thermal Boundary Layer in Power Law Fluid[J].
Journal of Thermal Science 2008
Hi-Z had used HZ13 module with the power of each module up to 13 W.That is to say, the module condition is more mature, so we maybe pay attention to ,which is affected by Material itself, thermal conductivity, thermal radiation and the current generation of Joule heat, so the cold side also needs a system to control its temperature.
Now in order to save time and materials, ultimately having an idealized system, it adopts technology of computer simulation.
Beijing: Higher Education Press, 2002 [8] Simone Dalola, Marco Ferrari, Vittorio Ferrari, Michele Guizzetti,Daniele Marioli and Andrea Taroni, Characterization of Thermoelectric Modules for Powering Autonomous Sensors, IEEE Transactions on instrumentation and Measrement, Vol.58, No.1, Jan, 2009 [9] Chang XueFang; Bo YuCheng; XuJian; Numerical Simulation for the Flux Coefficient of Gas-guide Hole Using CFDesign [J].journal of mechanical engineering and automation 2006 06 [10] An Analysis of the Characteristics of the Thermal Boundary Layer in Power Law Fluid[J].
Journal of Thermal Science 2008
Online since: July 2014
Authors: Kun Liu, Mou Sen Cheng, Min Chao Huang, Bao Yu Xing
The thruster would be fabricated from ultra high temperature materials and operated as a heat exchanger with the propellant[2,3].
In addition, a new ultra-high temperature material (tri-carbide) has the potential to allow greater Isp than 1000 seconds[4,5].
With the material property of platelet and propellant and boundary condition on the discrete model, when the evolution equation is iterated to steady state, the temperature and flow field of the thruster’s platelet exchanger can be calculated out.
Journal of Aerospace Power 2010; 25(5):1156-62 [9] Xing B Y, Cheng M S, Huang M C, Liu K.
Journal of National Univercity of Defense Technology, 2013,35(4) :20-25
In addition, a new ultra-high temperature material (tri-carbide) has the potential to allow greater Isp than 1000 seconds[4,5].
With the material property of platelet and propellant and boundary condition on the discrete model, when the evolution equation is iterated to steady state, the temperature and flow field of the thruster’s platelet exchanger can be calculated out.
Journal of Aerospace Power 2010; 25(5):1156-62 [9] Xing B Y, Cheng M S, Huang M C, Liu K.
Journal of National Univercity of Defense Technology, 2013,35(4) :20-25
Online since: September 2008
Authors: Hwa Soo Lee, Taisei Yamada
Lee
1,b
1
Department of Mechanical Engineering, College of Science & Technology, Nihon University
1-8-14 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-8308, Japan
a
yamada@mech.cst.nihon-u.ac.jp, blee@mech.cst.nihon-u.ac.jp
Keywords: Abrasive Grain, Contact Area, Grinding Wheel, Grinding Wheel Model
Abstract.
It is considered that these results are depending on the difference of bond materials.
Since vitrified wheels are made by brittle material, the fracture of bond for vitrified wheel is occurred easily comparing with one for resinoid wheel.
Ito: Journal of the Japan Society for Mechanical Engineers, Part C, Vol. 69, No. 683(2003), p.1933
Matsushita: Key Engineering Materials, Vol. 257-258(2004), p.263
It is considered that these results are depending on the difference of bond materials.
Since vitrified wheels are made by brittle material, the fracture of bond for vitrified wheel is occurred easily comparing with one for resinoid wheel.
Ito: Journal of the Japan Society for Mechanical Engineers, Part C, Vol. 69, No. 683(2003), p.1933
Matsushita: Key Engineering Materials, Vol. 257-258(2004), p.263
Online since: November 2011
Authors: Dun Bing Tang, Hua He, Chun Jing Liu
Materials and methods
Analysis of test scheme
The 17Cr2Ni2Mo steel with sample diameter of 16mm forged by initial temperature of 920℃ and final temperature of 840℃ is selected as test material.
References [1] GAO Xiuhua, QI Kemin, DENG Tianyong, et al, Application of artificial neural network to predicting harden ability of gear steel, International Journal of Iron and Steel Research. 13(2006) 71-73
[3] YANG Hui, LI Zhenhong, ZHANG Zhiliang, Investigation on Zener-Hollomon parameter in the warm-hot deformation behavior of 20CrMnTi, Journal of Zhejiang University Science A. 7(2006) 1453-1460
Oktem, Comparison of response surface model with neural network in determining the surface quality of moulded parts, Materials & Design. 28(2007) 1453-1460
References [1] GAO Xiuhua, QI Kemin, DENG Tianyong, et al, Application of artificial neural network to predicting harden ability of gear steel, International Journal of Iron and Steel Research. 13(2006) 71-73
[3] YANG Hui, LI Zhenhong, ZHANG Zhiliang, Investigation on Zener-Hollomon parameter in the warm-hot deformation behavior of 20CrMnTi, Journal of Zhejiang University Science A. 7(2006) 1453-1460
Oktem, Comparison of response surface model with neural network in determining the surface quality of moulded parts, Materials & Design. 28(2007) 1453-1460
Online since: September 2011
Authors: Jing Liu, Hong Xin Guan, Qi Sen Zhang, Cong Jia Xu
Anti-skid thin layer on asphalt pavement of Super Long Downgrades
Hong-xin Guan 1,2,3,a, Jing Liu 1,b, Qi-sen Zhang 1, Yang Xu 4 , Cong-jia Xu 1
1School of Traffic and Transportation Engineering, Changsha University of Science& Technology,
Changsha Hunan 410114, China
2Key Laboratory of Highway Engineering of Ministry of Education, Changsha Hunan 410114, China
3Key Laboratory of Road Structure & Material of Ministry of Transport, Changsha Hunan 410004,
China
4Hunan Traffic Survey and Design Institute, Changsha Hunan 410000, China
aguanhongxincs@163.com, b21603210@163.com
Keywords: Highway engineering; anti-skid thin-layer; Super long downgrades; Asphalt pavement.
Some studies had suggested pavement’s skid resistance performance was affected by lots of factors, not only by pavement materials structural [1]; The optimal content of asphalt had been determined when the skid resistance performance was in the best form by research on influence of aggregate gradation on the performance of porous asphalt pavement [2]; Skid resistance performance could be improved by adding sisal fiber in asphalt mixture [3].
The coating is consist of 1) adhesive materials, the epoxy products and flexible asphalt mixtures; 2) aggregates of wear-resisting, that is emery and bauxiterefractory.
Journal of highway and transportation research and development, 2009,75—77
Journal of Highway and Transportation Research and Development, 2010,27(9):14-17
Some studies had suggested pavement’s skid resistance performance was affected by lots of factors, not only by pavement materials structural [1]; The optimal content of asphalt had been determined when the skid resistance performance was in the best form by research on influence of aggregate gradation on the performance of porous asphalt pavement [2]; Skid resistance performance could be improved by adding sisal fiber in asphalt mixture [3].
The coating is consist of 1) adhesive materials, the epoxy products and flexible asphalt mixtures; 2) aggregates of wear-resisting, that is emery and bauxiterefractory.
Journal of highway and transportation research and development, 2009,75—77
Journal of Highway and Transportation Research and Development, 2010,27(9):14-17
Online since: August 2014
Authors: Ang Wu, Yu Jing He, Yan Li
Fig. 8 The 3D model of the frame of cutting table
The establishment of the finite element model.Define material properties and unit type.
Theframework for the selected materials are Q235A carbon structural steel.
Relevant material properties forE = 211 Gpa,µ = 0.3, density =7850kg/m3.
References [1] B.Chen:Journal of Xinjiang Finance & Economics Institute,Vol. 3 (2011), pp. 16
[3] J.Zhang, X.S.Bi, B.B.Xiao:Journal of Anhui Agricultural Sciences,Vol. 40 (2012), pp. 5051
Theframework for the selected materials are Q235A carbon structural steel.
Relevant material properties forE = 211 Gpa,µ = 0.3, density =7850kg/m3.
References [1] B.Chen:Journal of Xinjiang Finance & Economics Institute,Vol. 3 (2011), pp. 16
[3] J.Zhang, X.S.Bi, B.B.Xiao:Journal of Anhui Agricultural Sciences,Vol. 40 (2012), pp. 5051
Online since: August 2013
Authors: Wei Gang Hu, Zhi Ming Liu, Yue Chen
According to Goodman equation, asymmetric cyclic stress can be transformed into symmetrical cyclic stress, which together with the S - N curve equation [5] , give the fatigue life theoretical formula:
(1)
: The ultimate strength of material; : The stress amplitude; : the mean stress.
Mechanics and Materials Vols. 2012, pp826-831 [3]Yue Chen,Jianming Han,et,al.
Computational Materials Science,2008(10):591-607 [5]Zhiming Liu: Weld Bogie Frame Fatigue Life and Reliability Research under Random Load(Beijing Jiaotong University, China 2001) [6]Deng D, Kiyoshima S..
Journal of Welding, 2011, 55-58 [7]A.
International Journal of Fatigue, 2012, 112-121
Mechanics and Materials Vols. 2012, pp826-831 [3]Yue Chen,Jianming Han,et,al.
Computational Materials Science,2008(10):591-607 [5]Zhiming Liu: Weld Bogie Frame Fatigue Life and Reliability Research under Random Load(Beijing Jiaotong University, China 2001) [6]Deng D, Kiyoshima S..
Journal of Welding, 2011, 55-58 [7]A.
International Journal of Fatigue, 2012, 112-121
Online since: November 2012
Authors: Guang Xue Chen, Xiao Meng Cui, Lin Lin Chen, Huan Mei Wang
Introduction
In recent years, following the increasing popularity of digital printing equipments, there are more and more new materials and techniques were developed.
This case study is of a beginning in constructing digital printing quality analysis system work, and the experimental data was generally summarized only, it will be further analyzed right along considering the impact of material and equipment to provide reference for development work in lower-cost image quality analysis system.
Acknowledgement Project supported by the National Natural Science Foundation of China (Grant No. 60972134).
Wang: submitted to Journal of Advanced Materials Research (2012) [3] M.
Tse, Objective Print Quality Analysis and the Portable Personal IAS Image Analysis System, Journal of the Imaging Society of Japan, Vol.158, 2005, pp. 99-107.
This case study is of a beginning in constructing digital printing quality analysis system work, and the experimental data was generally summarized only, it will be further analyzed right along considering the impact of material and equipment to provide reference for development work in lower-cost image quality analysis system.
Acknowledgement Project supported by the National Natural Science Foundation of China (Grant No. 60972134).
Wang: submitted to Journal of Advanced Materials Research (2012) [3] M.
Tse, Objective Print Quality Analysis and the Portable Personal IAS Image Analysis System, Journal of the Imaging Society of Japan, Vol.158, 2005, pp. 99-107.
Online since: October 2014
Authors: Chuan Huat Ng, Mohd Khairulamzari Hamjah
Experiment Procedures
In this investigation, the plates with 5 mm in thickness were used as the base materials.
Taillandier, Rapid manufacturing of metallic objects, Rapid Prototyping Journal. 18 (2012) 264–280 [6] A.
Guyot, Optimal parameters for pulsed GTAW in partially and fully penetrated of weld pools, International of thermal science. 49(2010) 1197–1208 [7] A.
Roger, Numerical and experimental study of arc and weld pool behavior for pulse current GTAW, International journal of heat and mass transfer. 54(2011) 2163–2179 [8] U.
Ozgun, Optimization of weld bead geometry in GTAW process using grey relation analysis and Taguchi Method, Materials and Technology. (2009) 143–149
Taillandier, Rapid manufacturing of metallic objects, Rapid Prototyping Journal. 18 (2012) 264–280 [6] A.
Guyot, Optimal parameters for pulsed GTAW in partially and fully penetrated of weld pools, International of thermal science. 49(2010) 1197–1208 [7] A.
Roger, Numerical and experimental study of arc and weld pool behavior for pulse current GTAW, International journal of heat and mass transfer. 54(2011) 2163–2179 [8] U.
Ozgun, Optimization of weld bead geometry in GTAW process using grey relation analysis and Taguchi Method, Materials and Technology. (2009) 143–149
Online since: May 2016
Authors: Tatsuo Fujimoto, Masashi Nakabayashi, Shoji Ushio, Masakazu Katsuno, Takayuki Yano, Shinya Sato, Hiroshi Tsuge, Komomo Tani
Introduction
Silicon carbide (SiC) is a wide band-gap semiconductor material with excellent physical and electronic properties, and markedly improved performance has been demonstrated for various types of SiC devices fabricated onto SiC wafers grown by PVT technique.
Loboda, Materials Science Forum, 717-720 (2012) 347
Shinoyama., Journal of Crystal Growth, 181 (1997) 229
Ujihara, APL Materials, 1 (2013) 022109
Kanaya, Journal of Crystal Growth, 210 (2000) 613
Loboda, Materials Science Forum, 717-720 (2012) 347
Shinoyama., Journal of Crystal Growth, 181 (1997) 229
Ujihara, APL Materials, 1 (2013) 022109
Kanaya, Journal of Crystal Growth, 210 (2000) 613