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Online since: November 2012
Authors: Zhong Feng Zhang, Kai Huang, Zhen Ping Tao, Huan Liu
Materials and design is complementary to each other, a variety of designs reveal its face through the materials, and express the properties of materials through designs.
Therefore, we can select furniture materials based on the following basic criteria: (1)Fewer use the short or scarce materials, and use the materials compatible with the environment as far as possible, and use recyclable materials frequently
(2)Use the toxic and hazardous materials as few as possible, and give priority to using the materials with easy decomposing, easy recycle and less pollution
Wei: Shanxi Science and Technology. (2008) No.01, p. 88-89 [3] X.B.
Zhang: Journal of Shijiazhuang University.
Therefore, we can select furniture materials based on the following basic criteria: (1)Fewer use the short or scarce materials, and use the materials compatible with the environment as far as possible, and use recyclable materials frequently
(2)Use the toxic and hazardous materials as few as possible, and give priority to using the materials with easy decomposing, easy recycle and less pollution
Wei: Shanxi Science and Technology. (2008) No.01, p. 88-89 [3] X.B.
Zhang: Journal of Shijiazhuang University.
Online since: November 2016
Authors: Dhanya Krishnan, S. Anisha
Cyclic load were applied and the numerical results obtained were compared with the experimental results obtained from journal paper [10].
In material science yield criterion can be formulated in terms of equivalent stress.
References [1] Cheol-Ho Lee, Jae-Hoon Kim,(2007), “Seismic design of reduced beam section steel moment connections with bolted web attachment” Journal of Constructional Steel Research Vol 63,pp 522–531 [2] D.T.
Pachoumis, E.G.Galoussis, C.N.Kalfas, I.Z.Efthimiou (2010), “Cyclic performance of steel moment-resisting connections with reduced beam sections experimental analysis and finite element model simulation”, Engineering Structures,Vol 3 ,pp 2683-2692 [3] Elsayed Mashaly, Mohamed El-Heweity, Hamdy Abou-Elfath, Mohamed Osman (2011), “Finite element analysis of beam to column joints in ste,l frames under cyclic loading”, Alexandria Engineering Journal, vol 5, pp 91–104 [4] K.F Chung, R.M.Lawson (2001) “Simplified design of composite beams with large web openings to Eurocode 4”, Journal of construction steel research,Vol 57,pp 135-163 [5] K.F.Chung, T.C.H.Liu, A.C.H.Ko (2001),”Investigation on vierendeel mechanism in steel beams with circular web openings” Journal of Constructional Steel Research, Vol 57 pp 467-490 [6] Kulkarni Swati Ajay,Vesmawala Gaurang (2013),” A Study of Reduced Beam Section Profiles USING Finite Element Analysis”IOSR Journal of Mechanical and Civil Engineering,Vol 6,
Issue 4,pp 01-06 [7] Li Bin, (2014) “Investigation on Opening Sizes and Influencing Factors of the Connection with Opening on Beam Web of Steel Frames” The Open Civil Engineering Journal,Vol 8,pp 9-13 [8] Nikos D.
In material science yield criterion can be formulated in terms of equivalent stress.
References [1] Cheol-Ho Lee, Jae-Hoon Kim,(2007), “Seismic design of reduced beam section steel moment connections with bolted web attachment” Journal of Constructional Steel Research Vol 63,pp 522–531 [2] D.T.
Pachoumis, E.G.Galoussis, C.N.Kalfas, I.Z.Efthimiou (2010), “Cyclic performance of steel moment-resisting connections with reduced beam sections experimental analysis and finite element model simulation”, Engineering Structures,Vol 3 ,pp 2683-2692 [3] Elsayed Mashaly, Mohamed El-Heweity, Hamdy Abou-Elfath, Mohamed Osman (2011), “Finite element analysis of beam to column joints in ste,l frames under cyclic loading”, Alexandria Engineering Journal, vol 5, pp 91–104 [4] K.F Chung, R.M.Lawson (2001) “Simplified design of composite beams with large web openings to Eurocode 4”, Journal of construction steel research,Vol 57,pp 135-163 [5] K.F.Chung, T.C.H.Liu, A.C.H.Ko (2001),”Investigation on vierendeel mechanism in steel beams with circular web openings” Journal of Constructional Steel Research, Vol 57 pp 467-490 [6] Kulkarni Swati Ajay,Vesmawala Gaurang (2013),” A Study of Reduced Beam Section Profiles USING Finite Element Analysis”IOSR Journal of Mechanical and Civil Engineering,Vol 6,
Issue 4,pp 01-06 [7] Li Bin, (2014) “Investigation on Opening Sizes and Influencing Factors of the Connection with Opening on Beam Web of Steel Frames” The Open Civil Engineering Journal,Vol 8,pp 9-13 [8] Nikos D.
Online since: January 2012
Authors: Zhao Feng Chen, Juan Zhang, Bin Bin Li, Jie Ming Zhou, Zhou Chen
A Novel Rigid Vacuum Insulation Panel: Vacuum Insulation Sandwich
Juan Zhang1, a, Zhaofeng Chen1, b, Jieming Zhou2, c, Binbin Li1, d, Zhou Chen1, e
1 College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, PR China
2Suzhou V.
Due to absence of gas conduction inside core material and reduction of thermal radiation, thermal conductivity of VIP is 5 to 10 times lower than that of conventional materials [2], the lowest thermal conductivity ever published is 4.4mW/(m·K) [3] Thus, VIP is a combination of high thermal performance and limited thickness along with some other added values such as cost-effectiveness, light-weight.
Several micro-porous materials such as fumed silica, extruded polystyrene and glass wools can be used as core material.
Compared with traditional thermal insulation materials, a prominent character of VIS is the effective reduction of thickness.
Chu: International Journal of Heat and Mass Transfer Vol. 52 (2009) 3084–3090
Due to absence of gas conduction inside core material and reduction of thermal radiation, thermal conductivity of VIP is 5 to 10 times lower than that of conventional materials [2], the lowest thermal conductivity ever published is 4.4mW/(m·K) [3] Thus, VIP is a combination of high thermal performance and limited thickness along with some other added values such as cost-effectiveness, light-weight.
Several micro-porous materials such as fumed silica, extruded polystyrene and glass wools can be used as core material.
Compared with traditional thermal insulation materials, a prominent character of VIS is the effective reduction of thickness.
Chu: International Journal of Heat and Mass Transfer Vol. 52 (2009) 3084–3090
Online since: March 2015
Authors: Lu Zhuo Chen, Ming Cen Weng, Wei Zhang
Magnetostriction alloy and piezoelectric materials can be made into accurate actuators.
Compared with traditional materials, polymer materials have the advantages of high performance, light quality, fast response speed, etc.
When CNTs are introduced into polymer substrate materials to fabricate composite materials, they will have enhanced performances [10].
Weisenberger, Carbon nanotube polymer composites, Current Opinion in Solid State and Materials Science. 8(2004), 31-37
Harris, Carbon nanotube composites, International Materials Reviews. 49(2004), 31-43
Compared with traditional materials, polymer materials have the advantages of high performance, light quality, fast response speed, etc.
When CNTs are introduced into polymer substrate materials to fabricate composite materials, they will have enhanced performances [10].
Weisenberger, Carbon nanotube polymer composites, Current Opinion in Solid State and Materials Science. 8(2004), 31-37
Harris, Carbon nanotube composites, International Materials Reviews. 49(2004), 31-43
Online since: October 2013
Authors: Sami Mohamed Sergiwa, Samir Ahmed Hamouda
Gamma-ray Compton Spectrometers
Samir Ahmed HAMOUDA1,a and Sami Mohamed SERGIWA1,b
1Department of Physics, University of Benghazi, P.O.BOX 9480, Benghazi, Libya
adr_s_hamouda@yahoo.ie, bsergiwa@hotmail.com
Keywords: Methods and technologies of Material Characterization, Gamma ray Compton- spectroscopy, Chemistry and Physics of Materials.
To ensure the validity of the impulse approximation, Compton profile measurements have been limited to low Z-materials at low photon energies and the extension to high photon energies has permitted measurements to high Z- materials [5-6].
The 198-Au spectrometer was very successful in conducting Compton profile measurements on a wide class of high Z-materials and offered better resolution (0.40 a.u. compared with 0.57 a.u of momentum) than 241-Am spectrometer although the accuracy of measurements is limited by the statistical accuracy in the raw data due to the short half-life of the source.
High energy gamma ray requires a scattering geometry as to accommodate the necessary greater bulk of shielding material.
Tripoli-Libya Vol 6 / No. 8 (2006) [6] S Hamouda, “Detector Efficiency Correction for High Energy γ-ray Compton Scattering Studies” Journal of Sciences Garyounis University, Second Symposium, 2005., pp236 [7] M.
To ensure the validity of the impulse approximation, Compton profile measurements have been limited to low Z-materials at low photon energies and the extension to high photon energies has permitted measurements to high Z- materials [5-6].
The 198-Au spectrometer was very successful in conducting Compton profile measurements on a wide class of high Z-materials and offered better resolution (0.40 a.u. compared with 0.57 a.u of momentum) than 241-Am spectrometer although the accuracy of measurements is limited by the statistical accuracy in the raw data due to the short half-life of the source.
High energy gamma ray requires a scattering geometry as to accommodate the necessary greater bulk of shielding material.
Tripoli-Libya Vol 6 / No. 8 (2006) [6] S Hamouda, “Detector Efficiency Correction for High Energy γ-ray Compton Scattering Studies” Journal of Sciences Garyounis University, Second Symposium, 2005., pp236 [7] M.
Online since: August 2008
Authors: Ching Wen Lou, Jia Horng Lin, C.I. Huang, C.I. Su, Wen Hao Hsing
Lin1,e
1 Laboratory of Fiber Application and Manufacturing, Graduated Institute of Textile Engineering,
Feng Chia University, Taichung 407, Taiwan, R.O.C.
2
Department of Polymer Engineering, National Taiwan University of Science and Technology,
Taipei 106, Taiwan, R.O.C.
3
Center for General Education/ Institute of Biomedical Engineering and Material Science,
Central Taiwan University of Science and Technology, Taichung 406, Taiwan, R.O.C.
4
Department of Textile Engineering, Chinese Culture University, Taipei 111, Taiwan, R.O.C.
In the manufacturing process, the materials included pure cotton yarn, stainless steel fiber(called metallic yarn) and viscose rayon yarn containing bamboo charcoal (called bamboo charcoal yarn) were used for making the bamboo charcoal/stainless steel composite woven fabric.
Experimental Experimental Flowchart Fig. 1 Experimental flowchart Materials Warp Yarn India GTN Textile Company to supply pure cotton yarn: combed yarn 80's/2 Weft Yarn (A) Formosa Chemicals & Fiber Corporation (FCFC) to supply white bamboo charcoal yarn: 60% Rayon( contain 1.2% white bamboo charcoal) and 40% cotton blending yarn 30's/1.
Wu, "High-Tech New Performance / Functional Fibers & Applications " p.61-69, p113-114, p115-127, 2004 [2] Research center of China textile industry, "New Fiber Materials " p136-143, p165-166, 1997 [3] D.
Lee, "Eecyromagnetic Shielding Effectiveness of Stainless Steel/ Polyester Woven Fabrics," Textile Research Journal 71(1). 42-49, 2001 [6] P.
In the manufacturing process, the materials included pure cotton yarn, stainless steel fiber(called metallic yarn) and viscose rayon yarn containing bamboo charcoal (called bamboo charcoal yarn) were used for making the bamboo charcoal/stainless steel composite woven fabric.
Experimental Experimental Flowchart Fig. 1 Experimental flowchart Materials Warp Yarn India GTN Textile Company to supply pure cotton yarn: combed yarn 80's/2 Weft Yarn (A) Formosa Chemicals & Fiber Corporation (FCFC) to supply white bamboo charcoal yarn: 60% Rayon( contain 1.2% white bamboo charcoal) and 40% cotton blending yarn 30's/1.
Wu, "High-Tech New Performance / Functional Fibers & Applications " p.61-69, p113-114, p115-127, 2004 [2] Research center of China textile industry, "New Fiber Materials " p136-143, p165-166, 1997 [3] D.
Lee, "Eecyromagnetic Shielding Effectiveness of Stainless Steel/ Polyester Woven Fabrics," Textile Research Journal 71(1). 42-49, 2001 [6] P.
Online since: June 2011
Authors: Li Ma, Ke Chao Zhou, Lei Zhang, Zhi You Li
Materials Chemistry and Physics Vol. 115(2009), p.578
[4] Harris VG, Geiler A, Chen Y, Yoon SD, Wu M, Yang A, Chen Z, He P, Parimi PV, Zuo X, Patton CE, Abe M, Acher O, Vittoria C.
Journal of Magnetism and Magnetic Materials Vol. 321(2009), p.2035 [5] Dube GR, Darshane VS.
Journal of Materials Science Letters Vol. 19(2000), p.775 [7] Tian ZL, Lai YQ, Li J, Liu YX.
Journal of Magnetism and Magnetic Materials Vol. 242-245(2002), p.529 [11] Venzke S, Van Dover RB, Phillips JM, Gyorgy EM, Siegrist T, Chen CH, Werder D, Fleming RM, Felder RJ, Coleman E, Opila R.
Materials Chemistry and Physic Vol. 86(2004), p.375 [15] Sartale SD, Lokhande CD, Giersig M, Ganesan V.
Journal of Magnetism and Magnetic Materials Vol. 321(2009), p.2035 [5] Dube GR, Darshane VS.
Journal of Materials Science Letters Vol. 19(2000), p.775 [7] Tian ZL, Lai YQ, Li J, Liu YX.
Journal of Magnetism and Magnetic Materials Vol. 242-245(2002), p.529 [11] Venzke S, Van Dover RB, Phillips JM, Gyorgy EM, Siegrist T, Chen CH, Werder D, Fleming RM, Felder RJ, Coleman E, Opila R.
Materials Chemistry and Physic Vol. 86(2004), p.375 [15] Sartale SD, Lokhande CD, Giersig M, Ganesan V.
Online since: October 2014
Authors: Yuan Kui Gui, Wei Bing Wang, Xiao Bo Li, Ying Ru Wang, Xiao Qing Tao, Rui Guo, He Xue
The welded joint is composed of 4 materials which base material of RPV is A508, buttering layer is Alloy82, Welding material is Alloy182, base material of piping and cladding material are 304SS, which is shown fig.2 (b).
Analysis of the phenomenon above shows that the difference in mechanical properties between the base and weld materials in the welding process can affect the stress and strain field in front of the crack in the interface of two materials.
Acknowledgements This work is financially supported by National Natural Science Foundation of China (Grant No. 51475362).
Materials and Design ,52 (2013) 190–195 [2] J.
Materials and Design, 52 (2013) 190-195 [3] N.
Analysis of the phenomenon above shows that the difference in mechanical properties between the base and weld materials in the welding process can affect the stress and strain field in front of the crack in the interface of two materials.
Acknowledgements This work is financially supported by National Natural Science Foundation of China (Grant No. 51475362).
Materials and Design ,52 (2013) 190–195 [2] J.
Materials and Design, 52 (2013) 190-195 [3] N.
Online since: March 2015
Authors: K.Z. Sun, J.Y. Zhou
The tool changing manipulator geometric model adopts parametric 3D modeling software UG to build modeling (Fig. 1) and the materials of the tool changing manipulator is 40Cr.
From the point of stress analysis, the stress of material is far smaller than maximum permissible stress, so the key to enhance stiffness lies in structure optimization of the tool changing manipulator with machine precision being the guarantee.
Journal of Shandong University of Technology, 2001, 31(03), pp.04-07
Journal of Mechanical Strength, 2005, 27(03), pp.353-357
Journal of Shandong University(Engineering Science), 2010, 40(1), pp.78-83.
From the point of stress analysis, the stress of material is far smaller than maximum permissible stress, so the key to enhance stiffness lies in structure optimization of the tool changing manipulator with machine precision being the guarantee.
Journal of Shandong University of Technology, 2001, 31(03), pp.04-07
Journal of Mechanical Strength, 2005, 27(03), pp.353-357
Journal of Shandong University(Engineering Science), 2010, 40(1), pp.78-83.
Online since: February 2014
Authors: Yu Zhang, Shan Xiong Chen, Jian Li, Fei Yu
The Drucker-prager material model is adopted for the rock and the lagrangian controlling equation for the contact surfaces.
The material parameters of the rock and contact surfaces are shown in TableⅠand TableⅡ.
Journal of Engineering Geology, 1997, 5(4):335-356
Chinese Journal of Rock Mechanics and Engineering, 2000,19(6):747-750
Journal of Chongqing University, 2004,27(9):129-136
The material parameters of the rock and contact surfaces are shown in TableⅠand TableⅡ.
Journal of Engineering Geology, 1997, 5(4):335-356
Chinese Journal of Rock Mechanics and Engineering, 2000,19(6):747-750
Journal of Chongqing University, 2004,27(9):129-136