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Online since: July 2013
Authors: Yao Li, Jun Jie Yang, Ping Xue, Wu Xin Yu
Introductions
Electro plastic effect refers to a kind of phenomenon: deformation resistance decreases dramatically and plasticity rises obviously when materials (various kinds of metals, ceramics, super-conduction materials, powder metallurgy products) are conducted by active electrons (current or electric field)
Electro plastic effect generated by high energy impulse current is a compound effect and a result caused simultaneously by various of physic effects.
Contrast tension tests as to temperature were conducted, for the material would produce thermal effects when the currents were added.
Tensile strength decreased slightly, but the changes were very minute and were in the scope of normal test error compared to the elongation and strength of the material by adding impulse currents.
Acknowledgements This work is supported by general program of National Science Foundation of China, with Science Research Project No. 51071077.
[2] Li Yao, Dong Xiaohua, Electrosuperplastic Effect of Zn-22%Al Alloy, The Chinese Journal of Nonferrous Metals,1996, 6(3) 151-154 [3] K.Okazaki, M.Kagama, H.Conrad, An Evaluation of the Contributions of Skin, Pinchand Heating Effects to the Electroplastic Effect in Titanium.Materials, Science and Engineering, 1990, (45) 109-116 [4] National Standard of the People's Republic of China, Wrought Aluminium and Aluminium Alloy-Chemical Composition Limits GB/T 3190-1996 [5] H.Conrad, A.F.Sprecher, The Electroplastic Effect in Metals.Dislocation in Solids, Metal 1989, (8) 110-114
Contrast tension tests as to temperature were conducted, for the material would produce thermal effects when the currents were added.
Tensile strength decreased slightly, but the changes were very minute and were in the scope of normal test error compared to the elongation and strength of the material by adding impulse currents.
Acknowledgements This work is supported by general program of National Science Foundation of China, with Science Research Project No. 51071077.
[2] Li Yao, Dong Xiaohua, Electrosuperplastic Effect of Zn-22%Al Alloy, The Chinese Journal of Nonferrous Metals,1996, 6(3) 151-154 [3] K.Okazaki, M.Kagama, H.Conrad, An Evaluation of the Contributions of Skin, Pinchand Heating Effects to the Electroplastic Effect in Titanium.Materials, Science and Engineering, 1990, (45) 109-116 [4] National Standard of the People's Republic of China, Wrought Aluminium and Aluminium Alloy-Chemical Composition Limits GB/T 3190-1996 [5] H.Conrad, A.F.Sprecher, The Electroplastic Effect in Metals.Dislocation in Solids, Metal 1989, (8) 110-114
Online since: September 2013
Authors: Chuang Wu, Hao Chen, Wen Jiang Feng, Zhi Guo Zhang
Introduction
Electrocaloric (EC) materials have recently attracted considerable interest for use in solid-state cooling devices.
On the other hand, ferroelectric materials, such as Ba1-xSrxTiO3, Pb1-xSrxTiO3, etc., have been recognized for their importance as extraordinary functional materials due to their attractive dielectric properties, such as high dielectric constant, low dielectric loss, spontaneous polarization, and strong field dependence of dielectric constant.
Acknowledgement This work has been supported by the Outstanding Young Scholars Growth Plan of Liaoning Province under Grant No LJQ2011117, and the Science & Technology fund of Liaoning Province under No 2010220012.
Mathur: Science Vol. 311 (2006), p. 1270 [2] A.
Sci Vol 44 (2009), p. 5263 [6] Yinglong Wang, Tongru Wei, Baoting Liu, Lizhi Zhu, and Guangsheng Fu: Journal of Functional Materials Vol. 7 (2008), p. 1115
On the other hand, ferroelectric materials, such as Ba1-xSrxTiO3, Pb1-xSrxTiO3, etc., have been recognized for their importance as extraordinary functional materials due to their attractive dielectric properties, such as high dielectric constant, low dielectric loss, spontaneous polarization, and strong field dependence of dielectric constant.
Acknowledgement This work has been supported by the Outstanding Young Scholars Growth Plan of Liaoning Province under Grant No LJQ2011117, and the Science & Technology fund of Liaoning Province under No 2010220012.
Mathur: Science Vol. 311 (2006), p. 1270 [2] A.
Sci Vol 44 (2009), p. 5263 [6] Yinglong Wang, Tongru Wei, Baoting Liu, Lizhi Zhu, and Guangsheng Fu: Journal of Functional Materials Vol. 7 (2008), p. 1115
Online since: January 2005
Authors: M. Ashraf Imam, Valery Khabashesku, Roger Crane, Karen Lozano, Jiang Zhu, Enrique V. Barrera
Processing and Properties of Polymer Composites Reinforced
by Functionalized SWNTs
Jiang Zhu1 , Valery Khabashesku2 , Ashraf Imam3*
, Roger Crane4 , Karen Lozano5 ,
Enrique Barrera1
1
Department of Mechanical Engineering and Materials Science, 2Department of
Chemistry and Center for Nanoscale Science and Technology, Rice University, 6100
Main Street, Houston, TX 77005, USA
3
Naval Research Laboratory, 4555 Overlook Ave, Washington D.C., 20375, USA
4
NSWC Carderock Division, 9500 Macarthur Blvd, West Bethesda, MD, 20817, USA
5
Department of Mechanical Engineering, University of Texas Pan American,
1201 W.
Key Words: Composites, nanotubes, functionalization Introduction Single wall carbon nanotube (SWNT) has been seen as an excellent reinforcement candidate for advanced composite materials with multifunctionality.
Experimental The starting materials used in this work were SWNTs in the form of BuckyPearls from Carbon Nanotechnologies Inc.
Gerard, Journal of Materials Science, 36 (2001), 5245-5252
Key Words: Composites, nanotubes, functionalization Introduction Single wall carbon nanotube (SWNT) has been seen as an excellent reinforcement candidate for advanced composite materials with multifunctionality.
Experimental The starting materials used in this work were SWNTs in the form of BuckyPearls from Carbon Nanotechnologies Inc.
Gerard, Journal of Materials Science, 36 (2001), 5245-5252
Online since: June 2012
Authors: Hong Shen, Yu Feng Deng, Jian Hao
Introduction
Modern science and technology progress has made human beings can fabricate and create a new life forms.
Now the organ artificialization technology has become one of the tip of the medical science technologies, and the core is the development of biomedical materials these years, as our country pays more attentions and investments on aerospace field, the research of titanium alloy materials gradually deepens.
Choose the cemented carbide YW2 as cutting tool material [7], and take commonly used Ti6Al4V in medical as the titanium sheet sample, its physical performance parameters just as shown in Table 1.
The Development and Research Present Status of Biomedical Titanium Alloys [J]: Development and Application of Materials: 2010, 2: 81-85 [2] Cao Chun-xiao and Yan Yuan-lin.
Simulation and Experimental Investigation of Minipore Dring of Austenitic Stainless Steel: Journal of South University of Technology (Natural Science Edition): 2008, 10, 120-124
Now the organ artificialization technology has become one of the tip of the medical science technologies, and the core is the development of biomedical materials these years, as our country pays more attentions and investments on aerospace field, the research of titanium alloy materials gradually deepens.
Choose the cemented carbide YW2 as cutting tool material [7], and take commonly used Ti6Al4V in medical as the titanium sheet sample, its physical performance parameters just as shown in Table 1.
The Development and Research Present Status of Biomedical Titanium Alloys [J]: Development and Application of Materials: 2010, 2: 81-85 [2] Cao Chun-xiao and Yan Yuan-lin.
Simulation and Experimental Investigation of Minipore Dring of Austenitic Stainless Steel: Journal of South University of Technology (Natural Science Edition): 2008, 10, 120-124
Online since: August 2011
Authors: Bin Ren, Shu You Zhang
Product configuration design is the design process, based on a predefined components set and their constraints relation, it fast forms the personalized BOM (Bill of Materials, BOM) of product to meet the requirements of customers.
Science and engineering researchers are aware of the importance of knowledge acquisition.
Wang: Internation Journal of Product Research Vol. 47 (2009), p. 5037 [3] Z.
Otto: ASME Journal of Mechanical Design Vol. 121 (1999), p. 329 [13] M.M.
Hsiao:Information sciences Vol. 158 (2004), p. 232 [15] Z.
Science and engineering researchers are aware of the importance of knowledge acquisition.
Wang: Internation Journal of Product Research Vol. 47 (2009), p. 5037 [3] Z.
Otto: ASME Journal of Mechanical Design Vol. 121 (1999), p. 329 [13] M.M.
Hsiao:Information sciences Vol. 158 (2004), p. 232 [15] Z.
Online since: December 2010
Authors: Cheng Ling, Lan Zhou, Fan Gu
China Civil Engineering Journal. 2004, 1: P65-69
(in Chinese) [7] Liu, Muyu, Application of Extension Theory to the evaluation of slope stability, Journal Wuhan University of Technology (Materials Science Edition),v 14, n 4, 1999, p 57-62.
Beijing: Science Press, 2007.
Journal of University of Mining and Technology, 2005, 34(5): 591.
(in Chinese) [7] Liu, Muyu, Application of Extension Theory to the evaluation of slope stability, Journal Wuhan University of Technology (Materials Science Edition),v 14, n 4, 1999, p 57-62.
Beijing: Science Press, 2007.
Journal of University of Mining and Technology, 2005, 34(5): 591.
Online since: March 2011
Authors: Peng He, Zhen Zhou, Na Wang
Development of A Novel Fiber Optic Sensor for On-Line Monitoring of Soymilk Coagulation*
Peng He , Zhen Zhou and Na Wang
College of Measure-control Technology and Communication Engineering Harbin University of Science and Technology, Harbin 150040, China
paper507@163.com
*Supported by the Young Research Hardcore Supporting Project of Heilongjiang (No. 1155G63) and Natural Science Foundation of Heilongjiang, China (F200804) .
III Materials and Method Tofu gels for scattering light measurements were prepared in various soymilk concentrations, coagulant concentrations and reaction temperatures.
Journal of Food Engineering , 2007, 83(1) : 61-67
Journal of Food Engineering, 2009, 93:101-107
International Dairy Journal, 2006,16:131–146.
III Materials and Method Tofu gels for scattering light measurements were prepared in various soymilk concentrations, coagulant concentrations and reaction temperatures.
Journal of Food Engineering , 2007, 83(1) : 61-67
Journal of Food Engineering, 2009, 93:101-107
International Dairy Journal, 2006,16:131–146.
Online since: February 2011
Authors: Yu Tian Wang, Xiao Hong Ni, Jing Yuan, Jin Yu Wang
There is the relationship between the decline of LD optical power and the junction temperature:
(3)
Where K is the factor which is relevant with the LD materials.
Acknowledgement This paper is supported by the National Science Foundation Under Grant No.60974115 and No.61071202, and it is supported by the Hebei Science Foundation (F2010001312).
Journal of Tianjin Agriculture College. 2001,8(4): 15-21 [2] Guo Deji, Sun Hongfei, Analytic Approach of the Spectrum .
Sensing Technological Journal. 2003,16(3):318-320
Optics Journal.2001,21(9):1099-1103.
Acknowledgement This paper is supported by the National Science Foundation Under Grant No.60974115 and No.61071202, and it is supported by the Hebei Science Foundation (F2010001312).
Journal of Tianjin Agriculture College. 2001,8(4): 15-21 [2] Guo Deji, Sun Hongfei, Analytic Approach of the Spectrum .
Sensing Technological Journal. 2003,16(3):318-320
Optics Journal.2001,21(9):1099-1103.
Online since: October 2009
Authors: Yoshitaka Wada, Masanori Kikuchi, Yu Long Li
Evaluation of Interaction Effect of Two Surface Cracks
by Fatigue
Masanori Kikuchi1, a, Yoshitaka Wada2,b and Yulong Li3,c
1
Tokyo University of Science, 2641, Yamazaki, Noda, Chiba, 278-8510, Japan
2
Tokyo University of Science, Suwa, Toyohira, Chino, Nagano, 5000-1, Japan
3
Northwestern Polytechnical University, Xian, Shaanxi Province, China
a
kik@me.noda.tus.ac.jp, bwada@rs.suwa.tus.ac.jp, cliyulong@nwpu.edu.cn
Keywords: S-FEM, Fatigue, Surface Crack, Interaction Effect, Stress Intensity Factor, Mixed Mode
Loading.
Lu, Y.Y., Gu, L., "Element-free Galerkin methods", International Journal for Numerical Methods in Engineering, vol.37, (1995\4), pp.229-256 [2] Yagawa, G., Yamada, T., "Free mesh method: A new mesh-less finite element method", Computational Mechanics, vol.18, (1996), pp.383-386 [3] Belytschko, T., Black, T., "Elastic Crack Growth in Finite Elements with Minimal Remeshing", International Journal for Numerical Methods in Engineering, vol.45 (1999), pp.601-620 [4] Fish, J., Markolefas, S., Guttal, R., Nayak, P., " On adaptive multilevel superposition of finite element meshes", Applied Numerical Mathematics, vol.14, (1994), pp.135-164 [5] Kikuchi, M., Wada, Y., Takahashi, M., "Fatigue Crack Growth Simulation using S-FEM (in Japanese)", Transactions of Japan Society of Mechanical Engineers, Series A, vol.74 (2008), pp.812-818 [6] Kikuchi, M., Wada, Y., Takahashi, M., Li, Y., "Fatigue Crack Growth Simulation Using S-Version FEM", Proc.
ASME PVP2008, (CD-ROM) [7] Sih, G.C., "Strain-energy-density factor applied to mixed mode crack problems", International Journal of Fracture, vol.10, No.3, (1974), pp.305-321 [8] Pook, L.P., "The significance of mode I branch cracks for combined mode failure", Fracture and Fatigue: Elasto-Plasticity, Thin Sheet and Micromechanism Problems, (1980), pp.143-153 [9] Schollmann, M., Kullmer, G., Fulland, M., Richard, H.
Theoretical crack path prediction", Fatigue and Fracture of Engineering Materials and Structures, Vol.28 (2005), pp.3-12
Lu, Y.Y., Gu, L., "Element-free Galerkin methods", International Journal for Numerical Methods in Engineering, vol.37, (1995\4), pp.229-256 [2] Yagawa, G., Yamada, T., "Free mesh method: A new mesh-less finite element method", Computational Mechanics, vol.18, (1996), pp.383-386 [3] Belytschko, T., Black, T., "Elastic Crack Growth in Finite Elements with Minimal Remeshing", International Journal for Numerical Methods in Engineering, vol.45 (1999), pp.601-620 [4] Fish, J., Markolefas, S., Guttal, R., Nayak, P., " On adaptive multilevel superposition of finite element meshes", Applied Numerical Mathematics, vol.14, (1994), pp.135-164 [5] Kikuchi, M., Wada, Y., Takahashi, M., "Fatigue Crack Growth Simulation using S-FEM (in Japanese)", Transactions of Japan Society of Mechanical Engineers, Series A, vol.74 (2008), pp.812-818 [6] Kikuchi, M., Wada, Y., Takahashi, M., Li, Y., "Fatigue Crack Growth Simulation Using S-Version FEM", Proc.
ASME PVP2008, (CD-ROM) [7] Sih, G.C., "Strain-energy-density factor applied to mixed mode crack problems", International Journal of Fracture, vol.10, No.3, (1974), pp.305-321 [8] Pook, L.P., "The significance of mode I branch cracks for combined mode failure", Fracture and Fatigue: Elasto-Plasticity, Thin Sheet and Micromechanism Problems, (1980), pp.143-153 [9] Schollmann, M., Kullmer, G., Fulland, M., Richard, H.
Theoretical crack path prediction", Fatigue and Fracture of Engineering Materials and Structures, Vol.28 (2005), pp.3-12
Online since: October 2004
Authors: Xiao Yun Zhang, Xian Long Jin, Wenguo Qi, Yi Sun
But the explicit finite element algorithm using a
very small integration time step takes not only the strain rate of materials in high speed but also the
elastic and plastic characteristics into consideration.
Acknowledgements The authors would like to thank the financial support from the National Natural Science Foundation of China (No. 60174023) and the Ph.D.
China, Journal of Hunan University, Vol. 29(2002), p.114~123 [3] Zhang X Y, Jin X L and Ge L.
Journal of System Simulation, Vol.15 (2003), p. 228~230 [4] Zhang X Y, Jin X L and Sun Y.
Journal of System Simulation, Vol.15 (2003), p.1600~1602
Acknowledgements The authors would like to thank the financial support from the National Natural Science Foundation of China (No. 60174023) and the Ph.D.
China, Journal of Hunan University, Vol. 29(2002), p.114~123 [3] Zhang X Y, Jin X L and Ge L.
Journal of System Simulation, Vol.15 (2003), p. 228~230 [4] Zhang X Y, Jin X L and Sun Y.
Journal of System Simulation, Vol.15 (2003), p.1600~1602