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Online since: March 2013
Authors: Sheng Lu, Dai Li Yang, Ali Lu, Shi Yu Xiao
Suga, Proceedings of the Third International Symposium on Designing, Processing and Properties of Advanced Engineering Materials, Jeju Island, South Korea, November 5–8, 2003, pp.417–420
Jung, The improvement of mechanical properties of friction-stir-welded A356 Al alloy, Materials Scienceand Engineering A355 (2003) 154–159
Jahazi, Microstructure and tensile properties of friction stir welded AZ31B magnesium alloy, Materials Science and Engineering A 472 (2008) 179–186
Bellucci,A comparison between FSW and TIG welding techniques:modifications of microstructure and pitting corrosion resistance in AA 2024-T3 butt joints, Journal of Materials Processing Technology 152. (2004) 97–105
Ikeda, Hall-petch relationship in friction stir welds of equal channel angular-pressed aluminium alloys,Materials Science and Engineering A354 (2003) 298–305
Jung, The improvement of mechanical properties of friction-stir-welded A356 Al alloy, Materials Scienceand Engineering A355 (2003) 154–159
Jahazi, Microstructure and tensile properties of friction stir welded AZ31B magnesium alloy, Materials Science and Engineering A 472 (2008) 179–186
Bellucci,A comparison between FSW and TIG welding techniques:modifications of microstructure and pitting corrosion resistance in AA 2024-T3 butt joints, Journal of Materials Processing Technology 152. (2004) 97–105
Ikeda, Hall-petch relationship in friction stir welds of equal channel angular-pressed aluminium alloys,Materials Science and Engineering A354 (2003) 298–305
Online since: July 2014
Authors: S.P. Sivapirakasham, Sreejith Mohan, P. Bineesh, K. K. Satpathy
Improving arc stability by addition of materials with low ionization potential to the welding electrode lead to promising new research directions.
Addition of suitable materials which could improve the arc stability could also provide a significant reduction in fumes.
Crisp: Welding Journal 63(1984), p. 263s–6s
Hyunbyung Chae, Cheolhee Kim, Jeonghan Kim, Sehun Rhee: Materials Transactions, Vol. 47, No. 7 (2006), p. 1859-1863
Maity: Material Sciences and Applications 2 (2011), p. 1285-1292.
Addition of suitable materials which could improve the arc stability could also provide a significant reduction in fumes.
Crisp: Welding Journal 63(1984), p. 263s–6s
Hyunbyung Chae, Cheolhee Kim, Jeonghan Kim, Sehun Rhee: Materials Transactions, Vol. 47, No. 7 (2006), p. 1859-1863
Maity: Material Sciences and Applications 2 (2011), p. 1285-1292.
Online since: January 2010
Authors: Hui Fan
Introduction
Composite electrodeposition is one kind of general metal (or alloy) electroplating, which by adding
one or a few of insoluble non-metallic particulates (generally less than 100 microns in diameter)into
electrolyte and by making particles sufficiently suspended in bath by intense steering, enables the
additional particles to co-deposit with metal (or alloy) into a composite coating on a substrate,
improving the target material surface properties such as wear resistance, high-temperature corrosion
protection and the like[1,2].
Nickel, being a widely used engineering material, posses high mechanical and anti-corrosion behavior and has been extensively applied in the electroforming of complex parts and metal article surface protection [1-4].
The resulting coated layer on the target material has smooth surface, uniform structure, and strengthened hardness because of addition of embedded nanoparticles, which also lead to a enhancement of wear resistance as compared to the pure plating nickel.
Yoo,: Surface and Coating Technology Vol.564~569 (1998), p.108-109 [3] X.H Chen, J.C Peng, X.Q Li: Journal of Materials Science Letters Vol.22 (2001), p.2057-2061 [4] K.H Hou, M.D.
Nickel, being a widely used engineering material, posses high mechanical and anti-corrosion behavior and has been extensively applied in the electroforming of complex parts and metal article surface protection [1-4].
The resulting coated layer on the target material has smooth surface, uniform structure, and strengthened hardness because of addition of embedded nanoparticles, which also lead to a enhancement of wear resistance as compared to the pure plating nickel.
Yoo,: Surface and Coating Technology Vol.564~569 (1998), p.108-109 [3] X.H Chen, J.C Peng, X.Q Li: Journal of Materials Science Letters Vol.22 (2001), p.2057-2061 [4] K.H Hou, M.D.
Online since: September 2011
Authors: Li Fang Yang, Yan Ping Fu, Yue Zhao
It should not be anticipated that the use of street air cleaner can completely eliminate harmful material in the air.
Through research and comparison of available adsorbing material as silicon gel, active carbon, activated aluminum oxide and molecular sieve, the active carbon is chosen for adsorbing material of street air cleaner.
The snow-like structure is composed of three parts, the upper part for adsorbing material, the bottom for two fans and the middle parts for filtering material.
Discuss Pollution and Countermeasure of the Car Exhaust , Environmental Science and Management 2009, 34(7) [2] Cai Jian, Feng Chun-yan,Exploration on the Harm and the Countermeasures of Automobile Exhaust Pollution,Journal of Maoming College, 2008,(3):40-43 [3] Shao Yu, Li Guoxiang, Ai Ping, Progress on the Purification Technology of Automobile Exhaust, Yunnan Chemical Technology, 2005 32(6): 68-70,59 [4] Zhao Qiuling, Xu Xiaojian, Cai Xiuqin, Research Progress on Catalysts and Catalyst Substrate for Purifying Automobile Exhaust, Guangzhou Chemical Industry,2009,37 (8):15-18 [5] Huang Jianjun,Du Feihui,Ye Changsheng, Investigation and Analysis on City Streets Landscape in Fuzhou City,Guangdong Landscape Architecture2009,31(6)32-35 [6] Ye Jing.
Through research and comparison of available adsorbing material as silicon gel, active carbon, activated aluminum oxide and molecular sieve, the active carbon is chosen for adsorbing material of street air cleaner.
The snow-like structure is composed of three parts, the upper part for adsorbing material, the bottom for two fans and the middle parts for filtering material.
Discuss Pollution and Countermeasure of the Car Exhaust , Environmental Science and Management 2009, 34(7) [2] Cai Jian, Feng Chun-yan,Exploration on the Harm and the Countermeasures of Automobile Exhaust Pollution,Journal of Maoming College, 2008,(3):40-43 [3] Shao Yu, Li Guoxiang, Ai Ping, Progress on the Purification Technology of Automobile Exhaust, Yunnan Chemical Technology, 2005 32(6): 68-70,59 [4] Zhao Qiuling, Xu Xiaojian, Cai Xiuqin, Research Progress on Catalysts and Catalyst Substrate for Purifying Automobile Exhaust, Guangzhou Chemical Industry,2009,37 (8):15-18 [5] Huang Jianjun,Du Feihui,Ye Changsheng, Investigation and Analysis on City Streets Landscape in Fuzhou City,Guangdong Landscape Architecture2009,31(6)32-35 [6] Ye Jing.
Online since: October 2014
Authors: Constantin Bungau, Mircea Bogdan Tataru, Alexandru Rus
Introduction
The process of separation – classification of the granular material needs specific motions for the separation surfaces: sieves, panels with holes, grates.
Thus the basic process of granular material separation which is called self-sorting, process that leads granular material to extraction sieve, due to a combination of material sliding on a steep plan and its repositioning in part of this plan through in-plan motions on closed curves cyclic trajectories [1, 2].
In this paper we present a virtual model of supporting and actuation mechanical system of a machine for separating granular material, which has to allow generating a greater diversity of cyclic trajectories for further studies in separation-classification processes.
Gomes de Almeida - Using two servovalves to improve pneumatic force control in industrial cylinders - Int J Adv Manuf Technol (2013) 66:283–301 DOI 10.1007/s00170-012-4324-8, [5] Chia-Hua Lu, and Yean-Ren Hwang - Modeling of an air motor servo system and robust sliding mode controller design - Journal of Mechanical Science and Technology 26 (4) (2012) 1161~1169 www.springerlink.com/content/1738-494x DOI 10.1007/s12206-012-0220-2
Thus the basic process of granular material separation which is called self-sorting, process that leads granular material to extraction sieve, due to a combination of material sliding on a steep plan and its repositioning in part of this plan through in-plan motions on closed curves cyclic trajectories [1, 2].
In this paper we present a virtual model of supporting and actuation mechanical system of a machine for separating granular material, which has to allow generating a greater diversity of cyclic trajectories for further studies in separation-classification processes.
Gomes de Almeida - Using two servovalves to improve pneumatic force control in industrial cylinders - Int J Adv Manuf Technol (2013) 66:283–301 DOI 10.1007/s00170-012-4324-8, [5] Chia-Hua Lu, and Yean-Ren Hwang - Modeling of an air motor servo system and robust sliding mode controller design - Journal of Mechanical Science and Technology 26 (4) (2012) 1161~1169 www.springerlink.com/content/1738-494x DOI 10.1007/s12206-012-0220-2
Online since: April 2012
Authors: De Mao Hu, Chong Jie Leng, Yan Jue Gong, Hui Yu Xiang
The Finite Element Analysis of Rotor Contact Strength for a High-speed Traction Motor
Huiyu Xiang, Demao Hu, Chongjie Leng, Yanjue Gong
School of Materials Science and Mechanical Engineering, Beijing Technology and Business University, Beijing 100048
xianghy66@126.oom
Keywords: Motor, Rotor, Contact strength, Finite element
Abstract.
Table 1 The Working Condition of The Rotor Shaft Working Case Torque (N.m) Speed (rpm) Unilateral magnetic force /N Starting 2298 5090 Constant Power 2100 2468 5006 Rated working 1140 4636 2990 Short cut circuit 6993 Maximum Speed 1380 5870 1880 This paper analyzes the model material as follows: the rotor axis adopt 35 Cr, laminated with 50 W470.
Figure 1 The finite element model of the rotor The finite element analysis results Analysis model based on the consideration: (1) Assumes the rotor laminated and coupling is uniform pressure into the rotor shaft with corresponding surface, through the simulation examination of the surplus quantity selection is reasonable, the reasonable over surplus quantity not only ensure there is enough contact pressure to deliver torque, and ensure the contact stress and contact pressure of less than material allowable stress, meet the design rules rotor components
According to the stress distribution of the rotor strength, some extra material could be removed in the stress intensity lower area with the aim to reduce the weight of the rotor.
[4] Chen Xuezhen, Liu Jun: Journal of Huangshi Institute of Technology Vol. 6(2010), p.8-11,in Chinese
Table 1 The Working Condition of The Rotor Shaft Working Case Torque (N.m) Speed (rpm) Unilateral magnetic force /N Starting 2298 5090 Constant Power 2100 2468 5006 Rated working 1140 4636 2990 Short cut circuit 6993 Maximum Speed 1380 5870 1880 This paper analyzes the model material as follows: the rotor axis adopt 35 Cr, laminated with 50 W470.
Figure 1 The finite element model of the rotor The finite element analysis results Analysis model based on the consideration: (1) Assumes the rotor laminated and coupling is uniform pressure into the rotor shaft with corresponding surface, through the simulation examination of the surplus quantity selection is reasonable, the reasonable over surplus quantity not only ensure there is enough contact pressure to deliver torque, and ensure the contact stress and contact pressure of less than material allowable stress, meet the design rules rotor components
According to the stress distribution of the rotor strength, some extra material could be removed in the stress intensity lower area with the aim to reduce the weight of the rotor.
[4] Chen Xuezhen, Liu Jun: Journal of Huangshi Institute of Technology Vol. 6(2010), p.8-11,in Chinese
Online since: October 2007
Authors: Akihisa Inoue, Wei Zhang, Jian Bing Qiang
Quasicrystallization of (Zr65Al7.5Cu27.5)95Ti5 Glassy Alloy
Jianbing Qianga, Wei Zhang
b
and Akihisa Inoue
c
1
Institute for Materials Research, Tohoku University, Sendai 980-8577, JAPAN
a
qiang@imr.tohoku.ac.jp, bwzhang@imr.tohoku.ac.jp and cainoue@imr.tohoku.ac.jp
Keywords: Crystallization, Quasicrystals, Activation energy
Abstract: Phase transformation in the melt-spun (Zr65Al7.5Cu27.5)95Ti5 glassy alloy was
investigated by a combined use of X-ray diffraction (XRD), transmission electron microscopy
(TEM) and differential scanning calorimetry (DSC).
In comparison with (Zr65Al7.5Cu27.5)95Ti5, Zr65Al7.5Cu27.5 alloy possesses higher activation energy of glass transition ETg, indicating that it is more difficult for this material to relax, which may contribute to formation of the larger super-cooled liquid span shown in Fig.1.
Acknowledgements This work was financially supported by the Grant-in-Aid for Young Scientists (B) and by Research and Development Project on Advanced Metallic Glasses, Inorganic Materials and Joining Technology from the Ministry of Education, Science, Sports, and Culture of Japan.
Kelton: Journal of Non-Crystalline Solids Vol. 34&335 (2004)., p. 253 [11] A.
In comparison with (Zr65Al7.5Cu27.5)95Ti5, Zr65Al7.5Cu27.5 alloy possesses higher activation energy of glass transition ETg, indicating that it is more difficult for this material to relax, which may contribute to formation of the larger super-cooled liquid span shown in Fig.1.
Acknowledgements This work was financially supported by the Grant-in-Aid for Young Scientists (B) and by Research and Development Project on Advanced Metallic Glasses, Inorganic Materials and Joining Technology from the Ministry of Education, Science, Sports, and Culture of Japan.
Kelton: Journal of Non-Crystalline Solids Vol. 34&335 (2004)., p. 253 [11] A.
Online since: May 2003
Authors: Mika Linden, Sami Areva
Journal Citation (to be inserted by the publisher )
Copyright by Trans Tech Publications
Calcium Phosphate Formation on Chemically Modified Titanium
S.
Materials and Methods In order to improve the bioactivity of a titanium disk they were soaked in 5M NaOH solution at 60o C for 24 h and heat-treated at 600 o C for 1h as described in [1].
In addition, in the XRD patterns (characterization of the bulk material) distinct reflections resulting from sodium titanate were observed after 14 days of immersion in the SBF solutions (Fig. 1b). 0 50 100 150 200 250 300 350 3.6 4.0 4.4 4.8 5.2 Caconcentration/ mg(50 ml SBF) Immersion time / h SBF SBF+BSA SBF+Fib 20 24 28 32 36 SBF+Fib SBF+BSA SBF Ref apatite titanium sodium titanate Intensity/ arb. unit 2Θ / o (a) (b) Fig. 1: a) Evolution calcium concentration in SBF in the presence and absence of proteins as a function of time b) The XRD patterns of the surfaces immersed for 14 days in SBF in the presence and absence of proteins. 600 500 400 300 200 100 0 C(1s) Ti(2p) O(1s) Intensity / arb. unit Binding Energy / eV 354 350 346 342 Ca(2p) 140 136 132 128 P(2p) Fig. 2: XPS spectrum including the high resolution spectra of Ca(2p) and P(2p) of the NaOH and heat treated titanium after 30 min of immersion in SBF.
Acknowledgements: SA thanks Graduate School of Materials Science, Turku, Finland, for financial support.
Materials and Methods In order to improve the bioactivity of a titanium disk they were soaked in 5M NaOH solution at 60o C for 24 h and heat-treated at 600 o C for 1h as described in [1].
In addition, in the XRD patterns (characterization of the bulk material) distinct reflections resulting from sodium titanate were observed after 14 days of immersion in the SBF solutions (Fig. 1b). 0 50 100 150 200 250 300 350 3.6 4.0 4.4 4.8 5.2 Caconcentration/ mg(50 ml SBF) Immersion time / h SBF SBF+BSA SBF+Fib 20 24 28 32 36 SBF+Fib SBF+BSA SBF Ref apatite titanium sodium titanate Intensity/ arb. unit 2Θ / o (a) (b) Fig. 1: a) Evolution calcium concentration in SBF in the presence and absence of proteins as a function of time b) The XRD patterns of the surfaces immersed for 14 days in SBF in the presence and absence of proteins. 600 500 400 300 200 100 0 C(1s) Ti(2p) O(1s) Intensity / arb. unit Binding Energy / eV 354 350 346 342 Ca(2p) 140 136 132 128 P(2p) Fig. 2: XPS spectrum including the high resolution spectra of Ca(2p) and P(2p) of the NaOH and heat treated titanium after 30 min of immersion in SBF.
Acknowledgements: SA thanks Graduate School of Materials Science, Turku, Finland, for financial support.
Online since: September 2016
Authors: Yoshitaka Wada, Shinobu Yoshimura, Tomonori Yamada, Kaworu Yodo
(i) Extract the maximum representative QoI (von Mises stress, absolute value of the displacement and so on) in all time steps for each Material ID, which represents each component in an assembled structure.
(ii) Extract time history response (displacement) of representative finite element nodes, which have maximum representative QoI at (i) for each Material ID.
(iii) Visualize the correlation between the discrete Fourier transform results and QoI values for each Material ID obtained by (ii) on network graph.
Referential Material Properties Young’s Modulus 3,840[MPa] Poisson’s Ratio 0.3 Mass Density 2,000[kg/m3] Fig.3 Geometrical Distribution of Given Material Properties (Mass Density / Young’s Modulus in each pillar) Fig.4 Conventional Visualization of Deformation Diagram at 5.0 sec.
Fig.5 Spectral Analysis Results of Displacement Fig.6 Proposed Network Visualization References [1] S.Yoshimura, K.Kobayashi, H.Akiba, S.Suzuki, M.Ogino, Journal of Nuclear Science and Technology, Vol.52, No.4 (2015), pp.546-567, [2] H.
(ii) Extract time history response (displacement) of representative finite element nodes, which have maximum representative QoI at (i) for each Material ID.
(iii) Visualize the correlation between the discrete Fourier transform results and QoI values for each Material ID obtained by (ii) on network graph.
Referential Material Properties Young’s Modulus 3,840[MPa] Poisson’s Ratio 0.3 Mass Density 2,000[kg/m3] Fig.3 Geometrical Distribution of Given Material Properties (Mass Density / Young’s Modulus in each pillar) Fig.4 Conventional Visualization of Deformation Diagram at 5.0 sec.
Fig.5 Spectral Analysis Results of Displacement Fig.6 Proposed Network Visualization References [1] S.Yoshimura, K.Kobayashi, H.Akiba, S.Suzuki, M.Ogino, Journal of Nuclear Science and Technology, Vol.52, No.4 (2015), pp.546-567, [2] H.
Online since: May 2017
Authors: Luigia Lanni, Arash Salemi, Muhammad Shakir, Raheleh Hedayati, Carl Mikael Zetterling
In Materials Science Forum, volume 740, pages 1065–1068.
[5] Raheleh Hedayati, and Carl-Mikael Zetterling, Material aspects of wide temperature range amplifier design in SiC bipolar technologies.
Journal of Materials Research, 31(19), pages 2928-2935, (2016).
[5] Raheleh Hedayati, and Carl-Mikael Zetterling, Material aspects of wide temperature range amplifier design in SiC bipolar technologies.
Journal of Materials Research, 31(19), pages 2928-2935, (2016).