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Online since: March 2015
Authors: Yu Yang, Gai Mei Ren, Luo Yang, Peng Fei Hu
Equipment, materials and experimental methods
Equipment and materials.
Journal of Chifeng University (Natural Science Edition), Vol. 05 (2010), p. 96-97.In Chinese
[6] M Polat, B Arnold, S Chander, et al, Coal Science and Technology-Amsterdam-, Vol. 161-161 (1993)
[10] M Erol, C Colduroglu, Z Aktas, International Journal of Mineral Processing, Vol. 71 (2003), p. 131-145
[15] Yu Yang, Gaimei Ren, Chunyou Liu, et al, Advanced Materials Research, Vol. 726(2013), p. 2403-2408.
Journal of Chifeng University (Natural Science Edition), Vol. 05 (2010), p. 96-97.In Chinese
[6] M Polat, B Arnold, S Chander, et al, Coal Science and Technology-Amsterdam-, Vol. 161-161 (1993)
[10] M Erol, C Colduroglu, Z Aktas, International Journal of Mineral Processing, Vol. 71 (2003), p. 131-145
[15] Yu Yang, Gaimei Ren, Chunyou Liu, et al, Advanced Materials Research, Vol. 726(2013), p. 2403-2408.
Online since: May 2011
Authors: Xian Bin Huang, Wen Hai En, Zhan Yuan Zhu, Jia Chen, Jian Liang
Table 1 show that consider the quality of raw materials production process and quality control fluctuations in volatility in the concrete mix design prepared to raise the strength fcu, k, post-site sampling of concrete compressive strength specimens 40Mpa 28d above, the surplus coefficient.
Tamping machine mixing machine used in each mixed with 20 liters (table, in addition to the amount of the total rubber consumption outside the concrete material are 20L, unit: kg).3. the design of bulk density 2450kg/m3.
Journal of Highway and Transportation Research and Development Vol.8 (2004),p.72-73 [3] Jiankui Chen.
Construction Control Technique of Concrete Downward Pumped with High Fall [J].The World of Building Materials Vol.5 (2008),p.28-32 [12] Bin Liu.
Water Science and Engineering Technology Vol.5 (2005),p.11-12 [13] Wensheng Chai.
Tamping machine mixing machine used in each mixed with 20 liters (table, in addition to the amount of the total rubber consumption outside the concrete material are 20L, unit: kg).3. the design of bulk density 2450kg/m3.
Journal of Highway and Transportation Research and Development Vol.8 (2004),p.72-73 [3] Jiankui Chen.
Construction Control Technique of Concrete Downward Pumped with High Fall [J].The World of Building Materials Vol.5 (2008),p.28-32 [12] Bin Liu.
Water Science and Engineering Technology Vol.5 (2005),p.11-12 [13] Wensheng Chai.
Online since: April 2019
Authors: Shun Shan Feng, Si Yu Wu, Hai Tao Qian, Zhi Yu Shao
In addition, ANSYS/LS-DYNA finite element analysis software was used to simulate water-entry process of cushion materials with different densities.
The material models of steel and water are easy to be obtained, and the real data can be obtained only when the mechanical models of cushion materials are acquired.
The acceleration curve in Fig. 12 and the stress curve in Fig. 13 can be obtained by substituting the three densities polyurethane materials.
According to the effective stress curves of the head, the cushion effect of materials with three densities can be seen.
Shock mitigating materials and methods utilizing spiral shaped elements[J]. 2018
The material models of steel and water are easy to be obtained, and the real data can be obtained only when the mechanical models of cushion materials are acquired.
The acceleration curve in Fig. 12 and the stress curve in Fig. 13 can be obtained by substituting the three densities polyurethane materials.
According to the effective stress curves of the head, the cushion effect of materials with three densities can be seen.
Shock mitigating materials and methods utilizing spiral shaped elements[J]. 2018
Online since: August 2011
Authors: Zhu Heng Zhang, Hai Yan Zhu, Xiao Ting Xiao
Introduction
Polymer rheology which is under stress is produced by elastic,plastic and viscous deformation behavior,it is the relationship with the various factors in the basic polymer forming process parameters,selection and use of raw materials,the best forming process conditions,molding equipment,mold design and improving the quality of products has an important role.Therefore, the relationship between blends rheological-morphology-performance on the preparation of high-performance material blends has a very important role[1].In the rheological properties of polymer materials,the polymer melt viscosity is the most important measure of the flow behavior [2].Because low viscosity resin, then the product will increase the hardness,if hardness increases too larger can lead to products larger brittleness and toughness decreases.At the same time the resin viscosity drops to a certain extent, products will be vulnerable by external forces, leaving the role of stress and others to cost products
Computer have been used to simulation the materials processing which is the basic premise of modern materials.It can connect directly on the computer before the mold design,simulate the image of the actual molding process,forecast mold design and molding conditions on the impact of products,reduce or eliminate the production process defects may occur.
Where: n - a non-Newtonian index, which is the constant and related with the temperature and shear rate; - the shear rate, s-1; - Melt processing conditions for any viscosity, Pa.s; - Zero shear viscosity, Pa.s, the viscosity which is close to zero shear rate; D1 - the material constants, Pa.s; D2 - table glass transition temperature under low pressure; D3 - the pressure influence; A1, A2 are material constants; T - temperature of the melt filling, ℃.
[2] Dacheng Wu.Journal of Chengdu University of Science.(1994).
[5] Bingyan Jiang,Jingjing Xu,Lei Xie.Mechanical Science and Technology.
Computer have been used to simulation the materials processing which is the basic premise of modern materials.It can connect directly on the computer before the mold design,simulate the image of the actual molding process,forecast mold design and molding conditions on the impact of products,reduce or eliminate the production process defects may occur.
Where: n - a non-Newtonian index, which is the constant and related with the temperature and shear rate; - the shear rate, s-1; - Melt processing conditions for any viscosity, Pa.s; - Zero shear viscosity, Pa.s, the viscosity which is close to zero shear rate; D1 - the material constants, Pa.s; D2 - table glass transition temperature under low pressure; D3 - the pressure influence; A1, A2 are material constants; T - temperature of the melt filling, ℃.
[2] Dacheng Wu.Journal of Chengdu University of Science.(1994).
[5] Bingyan Jiang,Jingjing Xu,Lei Xie.Mechanical Science and Technology.
Online since: December 2018
Authors: Zi Li Yu, Cong Li Fu, Xiao Feng Zhao, Xiu Li Wang
FGO has several unique applications in such fields as storage devices [13-15], microwave absorber [16], superhydrophobic materials [17], bioapplications [18] and quantum dots [19-23].
Experimental Materials.
Owing to the more remarkable difference between FGO-A and FG, the materials in following discussion are FGO-A series unless indicated.
Ajayan: Science and engineering of graphene oxide.
Yang: Synthesis of highly luminescent fluorinated graphene quantum dots with tunable fluorine coverage and size, Materials Letters, 2015 Mar 15, vol. 143, p. 112-115
Experimental Materials.
Owing to the more remarkable difference between FGO-A and FG, the materials in following discussion are FGO-A series unless indicated.
Ajayan: Science and engineering of graphene oxide.
Yang: Synthesis of highly luminescent fluorinated graphene quantum dots with tunable fluorine coverage and size, Materials Letters, 2015 Mar 15, vol. 143, p. 112-115
Online since: December 2016
Authors: Martin Labaj, Karel Mikulica
There is a large number of materials available on the market and it is often very difficult to have a good grasp.
With the development of materials with greater demands on thermal properties, the composition of roof elements started to change gradually.
Choice of materials is not simple due to the extensive product range on the market.
In 1954 the foam concrete was introduced to professional community in the construction Journal.
Comparison of technical characteristics and technology of laying light building materials for floor construction.
With the development of materials with greater demands on thermal properties, the composition of roof elements started to change gradually.
Choice of materials is not simple due to the extensive product range on the market.
In 1954 the foam concrete was introduced to professional community in the construction Journal.
Comparison of technical characteristics and technology of laying light building materials for floor construction.
Online since: February 2020
Authors: Alok Kumar Das, Nitesh Kumar, Harish Bishwakarma, Prasenjit Sharma, Purshottam Kumar Singh
It is suitable for machining of both conductive as well as non-conductive materials.
ECDM Process The working method of ECDM for conductive material is quiet similar to conventional EDM process but for non-conductive material additional counter electrode is used.
Electrolyte tank made of acrylic material was mounted on X-Y stage.
Journals. 56 (2016)
Sciences 142 (2018) 86-96
ECDM Process The working method of ECDM for conductive material is quiet similar to conventional EDM process but for non-conductive material additional counter electrode is used.
Electrolyte tank made of acrylic material was mounted on X-Y stage.
Journals. 56 (2016)
Sciences 142 (2018) 86-96
Online since: January 2012
Authors: Guo Chang Hu, Mei Ping Wu, Yan Zhang
Because our basic science and technology fall behind other countries, wide-ranging developing occasion doesn’t occur.
Chinese Journal of Applied Mechanics,2004,21(21)(in Chinese) [18] Fang Cunguang, Wang Wei.
Journal of System Simulation, 2004,16(11)(in Chinese) [20] Wang Haifeng, Song Bifeng, Wang Haiping.
Journal of System Simulation, 2006,18(5)(in Chinese) [24] Chen Lan, An Jingwen, Yang Changwei.
Journal of Projectiles, Rockets, Missiles and Guidance, 2007(2)(in Chinese) [28] Ou Yangjin.
Chinese Journal of Applied Mechanics,2004,21(21)(in Chinese) [18] Fang Cunguang, Wang Wei.
Journal of System Simulation, 2004,16(11)(in Chinese) [20] Wang Haifeng, Song Bifeng, Wang Haiping.
Journal of System Simulation, 2006,18(5)(in Chinese) [24] Chen Lan, An Jingwen, Yang Changwei.
Journal of Projectiles, Rockets, Missiles and Guidance, 2007(2)(in Chinese) [28] Ou Yangjin.
Online since: January 2013
Authors: Li Jiang Huang, Xiao Qiang Shi, Hui Wang
Disassembly is part of the remanufacturing and it is meant to obtain components and materials from end-of-life products.
An essential performance objective of a disassembly process is the benefits it brings, that is the revenue brought by the retrieved parts and material, diminished by the cost of their retrieval operations.
Its main task is to disassembly the TV set into different groups for different objects: 1) Reuse as metal material; 2) Reuse as plastic material; 3) Collect some components or material dangerous to environments.
Acknowledgements This research is partially sponsored by National Natural Science Foundation of China (Grant 51205221), Natural Science Foundation of Beijing (Grant 3122022) and the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry.
Gupta: European Journal of Operational Research, Vol.179(3), (2007), p.692-708
An essential performance objective of a disassembly process is the benefits it brings, that is the revenue brought by the retrieved parts and material, diminished by the cost of their retrieval operations.
Its main task is to disassembly the TV set into different groups for different objects: 1) Reuse as metal material; 2) Reuse as plastic material; 3) Collect some components or material dangerous to environments.
Acknowledgements This research is partially sponsored by National Natural Science Foundation of China (Grant 51205221), Natural Science Foundation of Beijing (Grant 3122022) and the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry.
Gupta: European Journal of Operational Research, Vol.179(3), (2007), p.692-708
Online since: July 2015
Authors: Mohammad Kamal Hossain
Among the materials used for thin film solar cells, amorphous silicon is the most important material in the commercial production.
Amorphous semiconductors have significantly different characteristics than those of crystalline materials [8].
Davis, Electronic Processes in Noncrystalline Materials, 2nd ed., Clarendon Press, Oxford345
Guha, Hydrogen dilution effects on a-Si:H and a-SiGe:H materials properties and solar cell performance, J.
Nesladek, Optical properties of microcrystalline materials, J.
Amorphous semiconductors have significantly different characteristics than those of crystalline materials [8].
Davis, Electronic Processes in Noncrystalline Materials, 2nd ed., Clarendon Press, Oxford345
Guha, Hydrogen dilution effects on a-Si:H and a-SiGe:H materials properties and solar cell performance, J.
Nesladek, Optical properties of microcrystalline materials, J.