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Online since: September 2011
Authors: Mei Niu, Hai Bin Fan, Wen Sheng Hou, Jin Ming Dai, Zi Lu Wu, Sheng Shi
Structure and Properties of MWNTs-OH/PET FDY Composite Fiber Wensheng Hou1,2,a, Haibin Fan 1,b,Mei Niu1,c,Jinming Dai1,d, Zilu Wu 1 and Sheng Shi1 (1.College of Textile Engineering and Arts, Taiyuan University of Technology, Taiyuan, Yuci 030600) (1.College of Material Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024) awshou10@163.com,bfanhaibin721@sina.com,cniumeityut@163.com, dtgmydjm@163.com Keywords: PET, MWNTs-OH, Terephthalic acid (TPA), Composite fiber Abstract.
Since the discovery of CNTs in 1991, it has been a focus of research for a long time, Now, it has been widely used in the CNTs/PET composite materials.
However, having a good dispersion and compatibility of CNTs in polymer matrix is one of the prerequisites for composite materials to obtain excellent properties.
Journal of Tianjin Polytechnic University.
Online since: August 2015
Authors: Dmitry V. Lychagin, Ekaterina A. Alfyorova
Materials and methods In this work, nickel single crystals (impurities are less than 0.01%) grown using the Bridgeman method were studied.
Interference profilometry allows us to obtain a full picture of the surface morphology; therefore it is widely applied in different areas of science [5].
Lychagin, A.Chernyakov, Research of stress field distribution in fcc-single crystal samples in compression, Applied Mechanics and Materials. 682 (2014) 485-490
Zaitsev, Interfacial adhesion between thermal spray coating and substrate achieved by ultrasonic finishing, Applied Mechanics and Materials. 682 (2014) 459-463
Alfyorova, Macrosegmentation and strain hardening stages in copper single crystals under compression, International Journal of Plasticity. 69 (2015) 36-53
Online since: May 2011
Authors: Qian Wang, Cheng Shen Zhu, Hong Chen, Su Qin He
In order to prepare PA1010/VP301 materials which have good performance, POE is selected as compatibilizer to prepare nylon 1010/POE-g-MAH, and the mechanical properties are investigated.
Experiment Materials.
Reological properties of composite materials was tested in HAAKE HAAKE- II high-pressure capillary rheometer (L / D = 40) which was produced by the German.
The reason was that the grafted reaction of POE-g-MAH and nylon happened during the process of melt extrusion, the grafted product of nylon PA1010-g-POE formed which played a similar "compatibilizer" role, the grafted product made the affinity of the two phases become larger, and the interface bond close, so the materials could absorb more energy when the materials was shocked, and the impact strength increased.
PA1010/POE-g-MAH composite materials were pseudoplastic fluid in the tested range of temperature and shear rate.
Online since: July 2011
Authors: Feng Hui Wang, Xia Wang
Experimental Materials The half-cell for anode-supported SOFC used in the present work is shown in Figure. 1.
This technique is an effective and non destructive method to measure stresses in crystalline materials.
Acknowledgements This work was financially supported by the National Science Foundation of China (Grant: 10772146) and Basic Research Foundation from NWPU.
[2] Xianshuang Xin, Zhe Lü, Xiqiang Huang, Xueqing Sha, Yaohui Zhang, Wenhui Su: Anode-supported solid oxide fuel cell based on dense electrolyte membrane fabricated by filter-coating, Journal of Power Sources, Vol.159 (2006), p. 1158–1161 [3] Lara-Curzio E, Watkins TR, Trejo R, Luttrell CR, Radovic M, Lannutti J, et al: Effect of temperature and H2-induced reduction on the magnitude of residual stresses in YSZ-NiO/YSZ bi-layers.
Tagawa: Thermal expansion of nickel zirconia anodes in solid oxide fuel cells during fabrication and operation, Journal of Eletrochemical Society Vol. 145 (4) (1998), p. 1374–1381
Online since: January 2014
Authors: Wen Zhong Zhao, Jian Cheng Sun, Ya Jing Pang
Model and Material Parameters Shahe bridge is in the fourth section of xin-fen highway,which located in boundaries between Xingtai to Ji Jin.It across the engineering of North Water Transfer, the upper structure consists of two 5m×5m pier and a 6.9m×5m main pier, the substructure is made of 41.4m×12.9m×4 m massive concrete pile.Pouring disposable completed, Using of cooling pipe to reduce hydration heat.
According to the symmetry of structure, 1/4 model is taken for analysis.Physical and thermal parameters of the material are shown in table 1 and table 2.
Table.1 Physical and thermal parameters of the material Material Type Density (kN/m3) Elastic modulus (kN/m2) Poisson ratio Heat Expansion coefficient Heat Conductivity (kJ/m hr°C) Specific heat (kJ/kg°C) C40 25 3.0e7 0.18 1e-5 9 1.05 Foundation 18 1.0e7 0.2 1e-5 200 2 Table.2 Model parameters Pouring temperature (°C) Concrete exothermic parameters Cooling Pipe atmospheric temperature The maximum adiabatic temperature rise(°C) Constant inlet water temperature (°C) water flow (L/min) water flow 20 48 1.2 20 10 Sinewave, The maximum amplitude is 15, Mean is 20 20 48 1.2 20 15 20 48 1.2 20 20 inlet water temperature 20 48 1.2 30 5 20 48 1.2 40 5 20 48 1.2 50 5 Impact of Inlet Water Temperature and Water Flow on the Temperature and Stress It is 60th hours after pouring,the maximum temperature rise appeared.
References [1] BofangZhu.The stress and temperature control of massive concrete[M].Beijing:Electric Power Press of China.1999,77-92(In Chinese) [2] Tiemeng Wang.Cracking control of engineering structures[M].Beijing:Building Industry Press of China.1997. 62-64,585-596(In Chinese) [3] Junxi Wang.Analytical Solution of Massive Concrete Temperature Field in Stratifying Construction of Large Bridge[J].Journal of Lanzhou Jiaotong University (Natural Sciences). 2006,25(1):20-23(In Chinese) [4] Bofang Zhu.Eguivalent equation of heat condution in mass concrete considering the effert of pipe cooling[J].Journal of Hydraulic Engineering.1991,(3):28-34(In Chinese)
Online since: January 2010
Authors: Hidehiro Hata, Tetsuyuki Hiroe, Kazuhito Fujiwara, Mitsuru Yamauchi, Kiyotaka Tsutsumi, Takuya Igawa
Explosively Driven Expansion and Fragmentation Behavior for Cylinders, Spheres and Rings of 304 Stainless Steel Tetsuyuki Hiroe1, a , Kazuhito Fujiwara1, b , Hidehiro Hata1, c , Mitsuru Yamauchi1, d , Kiyotaka Tsutsumi1, e , and Takuya Igawa1, f 1 Graduate School of Science and Technology, Kumamoto University, Kumamoto, 860-8555, Japan a hiroe@gpo.kumamoto-u.ac.jp, bfujiwara@kumamoto-u.ac.jp, chata@mech.kumamoto-u.ac.jp, d 086d8558@gsst.stud.kumamoto-u.ac.jp, e086d8558@gsst.stud.kumamoto-u.ac.jp, f086d8558@gsst.stud.kumamoto-u.ac.jp Keywords: Fragmentation, Explosive, Cylinder, Sphere, Ring, 304 stainless steel Abstract.
Fragment energy values Γ (= 24/ 3 Sερ� ) in the cylinder model were extensionally adopted for spheres and rings whereρ: the density of materials, S: average circumferential width of fragments for cylinder and ring, average span of fragments for sphere, and )/( RR�� =ε : circumferential strain rate at estimated fracture time.
Takahashi: International Journal of Impact Engineering, Vol.35 (2008), p. 1578 [3] D.
Hightower, in: Shock-Wave and High-Strain-Rate Phenomena in Materials, edited by M.
Guinan: Journal of Applied Physics, Vol.51 (1980), p.1498 [6] R.
Online since: November 2012
Authors: Wei Qiu Zhong, Dao Ming Sun, Hai Gui Kang, Yun Fang Lu
Acknowledgement This work has been funded by Project 50708011 supported by National Natural Science Foundation of China.
ACI Materials Journal, 92(2):164-171.(1995) [2] Liu Jun, Fang Huiqi, He Hongzhu, Applied research of underwater concrete[J].
Journal of Building Materials, (4):360-365.(2000)
Online since: January 2013
Authors: Li Tan
This can be accomplished only when all elements of manufacturing-design, fabrication and assembly, quality assurance, management, materials handling—are computer integration.
Ministry of science and technology in " 863 fifteen " make the theme of modern integrated manufacturing system technology, So we can foreknow based on 3D CAD CAPP system will become a research hotspot.
A simulated annealing method based on a clustering approach to determine bills of materials for a large product family.
European Journal of Operational Research 169 (2006) 1030–1047 [5] Daniel Collado-Ruiz, Hesamedin Ostad-Ahmad-Ghorabi.
Journal of Cleaner Production 18 (2010) 355–364
Online since: October 2014
Authors: An Zhong Deng, Wen Kang Wang, Sheng Bo Li, Jian Gang Miao, Jian Guo Wang, Nan Song
Storage Cavern is the place where the army stores materials, equipment and staffs, which plays an important role during the war.
The elementary data from the selected Storage Cavern is the geometric data which contains the geometric information of manufacturing facilities(such as shape, size, material, color, textures etc.)with which we can generate the 3D virtual environment. 2.2.Modeling After acquiring the elementary data, we build the structure model by Sketch Up 8 and export to 3Ds Max 2009.
With 3Ds Max, we optimize the structure model by Sketch Up, build the 3D models of the facilities and equipment, render the models with material, color and textures, and then export to Virtools 5 with the export plug-in unit of Virtools.
Aurich, Xiang Yang, and Bernd Hamann: Noise investigation in manufacturing systems: An acoustic simulation and virtual reality enhanced method, CIRP Journal of Manufacturing Science and Technology 5 (2012) 337-347
[8] Younghee Lee, Jinkyung Kim, Junghwan Kim, Eun Jung Kim, Young Gyu Kim and Il Moon: Development of a web-based 3D virtual reality program for hydrogen station, International Journal of Hydrogen Energy 35(2010) 2112-2118.
Online since: January 2012
Authors: Chun Yang Zhang, Liang Zhu, Yi Shan Lou, Zhong Hui Li
The relationship between stress and strain should adopt perfectly plastic material model, in this paper standard exponential creep model is adopted to analysis the creep characteristics, which described as (1): (1) Where: is secondary creep rate,; is creep stress, MPa; A is material constant, MPa-3.5a-1 ; is creep stress index, non-dimension, , is defined by inversion of lab test or field datum.
BUILDING of mechanical creep computation module of soft mudstone Lagrangian element method considered material nonlinearity, geometry nonlinearity and large deformation, which is applied to numerical analogue for large deformation of soft mudstone and salt layer by many investigators such as Feng Chen [3], Jinzhou Zhao [4], Jingen Deng & Yan Jin [1], [6], Zhonghui Li [7] et al.
Triaxial finite difference software FLAC3D adopt explicit Lagrange method and blend-disperse partitioning technology, which can simulate material plastic failure and flow very exactly.
[5] Deng Jingen, Liu Shujie, Shi Deqin,Zhang Li. calculation of elastoplastic deformation of wellbore in soft mudstone using lagrangianm method[J].journal of geomechanics, 1999,5(1), pp.33-37
Journal of the University of Petroleum, China (Edition of Natural Science), 1999, 23(2), pp.37-39 [7] Li Zhonghui,Lou Yishan,etc.The Design of Casing Used in Salt Layer in Gulf of Laizhou-China.SPE132210.