Search results

Ductile fracture criterion and material constants The material used in this study is sheet metal 2A12-0 with a thickness of 1.5 mm.
The simulations are base on the Hill's yield criterion which is suitable for normal anisotropy materials.
Materials perform a better plasticity under compressive stress state proved by many experiments, that's why the micro holes group up slowly with the smaller degree of stress triaxiality ( h / ), vice versa [9].
References [1] G.hussain,N.U.Dar,L.Gao: Journal of Materials Processing Technology.Vol.187 (2007),p.94 [2] Jeswiet, F.
Hirt: Annals of the CIRP.Vol.54 (2005), p.625 [3] Y.Huang, Y.J.Wang, J.Cao: Proceedings of the 2007 international Manufacturing Science And Engineering Conference (USA 2007) [4] H.Takuda, K.Mori: Journal of Materials Processing Technology.Vol.95 (1999), p.118 [5] YU Xin hong, ZHAI Ni zhi: Journal of forming & stamping technology in chinese.Vol.32 (2007), p.46 [6] H.Takuda, N.Hatta: Journal of .Materials Science and Engineering.Vol.242 (1998), p.16 [7] SHAN Xiao jiang,in:Ansys ls-dyna of dynamic analysis methods and project examples, chapter, 10, China Water Conservancy and Hydropower Press in Chinese(2006) [8] JI Guo jin,PENG Ying hong: Journal of Metal forming technology in chinese.Vol.16(1998),p.36 [9] CHUI Ni zhi: the master thesis of northwestern polytechnic university in Chinese (2007)

In recent years, materials science has witnessed significant advancements, particularly in the development of novel thin films for electronic and optoelectronic applications.
The precursors materials Zn (CH3COO)2.2H2O, NiCl2 and EuCl3 were used as-purchased without further purification.
Lampert, Electrochromic materials and devices for energy efficient windows, Solar Energy Materials 11 (1984) 1-27
Ihlal, First Principle Study of Structural, Electronic, Optical Properties of Co-Doped ZnO, Journal of Composites Science 7 (2023) 511
Kong, Nonenzymatic glucose sensing by CuO nanoparticles decorated nitrogen- doped graphene aerogel, Materials Science and Engineering: C 78 (2017) 210-217

References [1] L.J Han, X.H Zhao, L.Zhao, Materials Science and Technology, J.1999,7(3),76-79
[4] Y Wu, X.L Meng, W.Cai, L.C Zhao, Materials Science and Technology,J.2005,13(3), 312-315
[5] L.W Guo, Y.D Yu ,F Gu, D Li, G.G Meng, China Nonferrous Metals Journal, J.2003,13(2), 404-408
[6] S.B Xue, X.C Lv, H.W Zhang, Welding Journal, J.2004,25(1), 1-5
[7] Y.L Xu, Z.F Cheng, X.L Fan, C.L Chu, S.D Wang, Welding Journal, J. 2006,27(12), 89-92

Introduction With the rapid development of global economy, the demand for food wrap materials is rising sharply.
Compared with other food wrap materials, such as plastics, paper is often more challenging because of favorable biodegradability and reusability.
Experimental Materials. 1000μg/mL lead standard solution was obtained from National Standard Research Center, nitric acid(superior quality pure) was provided by Sinopharm Chemical Reagent Co.
Paper samples were folded into bowl shape, the ratio of volume to area were calculated to be 0.63 to 1.12 ml/cm2, fit the requirement of American Society for Testing and Materials.
[7] WANG Jin, LI Xuan: Chinese Journal of Spectroscopy Laboratory Vol. 6 (2009), p. 14523-1456.

Experimetal procedure Equipment and materials.
Materials and Manufacturing Process. 25 (2010) 851-856
Materials and Manufacturing Processes. 28 (2013) 381-389
Journal of Materials Technology. 191 (2007) 206-209
Journal of Mechanical Science & Technology, 27 (2013) 177-183.

The no-wax material has greater strengthen than wax material, and in the laser sintering process the no-wax material is not easy to crack, so more suitable for the RIC technology, especially suitable for sintering complex shape parts with thin-walled.
Materials and Methods The Lasercore 5300 RP machine produced by Beijing Longyuan Automated Fabrication System Co.
Materials Science and Engineering A, 2008, 498: 37~41 [3] P.
Indian Foundry Journal, 2011, 47(7): 23~26 [4] K.
Rapid Prototyping Journal, 1999, 5(1): 12~20

Sector 4, Building 75, Porto Alegre, RS, Brazil 2 Department of Materials/PPGEM/ Federal University of Rio Grande do Sul 3 ICET/Feevale atiagocoti@gmail.com Keywords: Fuel Cell, SOFC, YSZ, Spray Pyrolysis.
The development of solid oxide fuel cell has shown that the thin film concept for the electrode supported designs, based on the yttria-stabilized zirconia, is more promising than the research of new electrolyte materials.
Rajam: Materials Chemistry and Physics Vol. 111 (2008), p. 131. ].
Ivey: Journal of Power Sources Vol. 184 (2008), p. 220. ,[] T.
Opinion in Solid State and Materials Science Vol. 5 (2001), p. 317. ].

In these process, surface quality and material removal rate are of very important.
Two methods exist for conducting feedrate scheduling: one is based on the material removal rate (MRR) and the other is based on the cutting force [2].
Liu: Journal of Materials Processing Technology, Vol. 138 (2003), p. 513 [2] B.U.
Lazoglu: International Journal of Machine Tools and Manufacture, Vol. 44 (2004), p. 21 [3] L.Q.
Zhang: International Journal of Advanced Manufacturing Technology, Vol. 40 (2009), p. 1191

The materials properties comprised of the cylinder are shown in Table 1.
Fig.1 the divided zones in cylinder Fig.2 the cross section of cylinder and materials Table 1 the material properties Young's Modulus（MPa） Shear Modulus（MPa） Poisson's Ratio Name Material EX EY EZ GX GY GZ PRXY Outer Carbon Fiber 2.3*10 5 2000 2000 2000 2000 2000 0.32 Liner HDPE 1200 1200 1200 - - - 0.3 Valve Carbon Steel 2.1E5 2.1E5 2.1E5 - - - 0.3 Numerical Simulation for Damage Tolerance More and more composite cylinders are used to contain compressed natural gas for vehicles.
In terms of the materials used in the composite cylinder, the material property of the inner is isotropic and the outer part is comprised of fiber reinforced plastic (FRP) such as carbon fiber and epoxy resin matrix composite. 3D 8-node layered structural solid element is capable to mesh the outer part with anisotropic material property.
Journal of the European Ceramic Society, Vol. 20 (2000), p. 545 [4] Kyong Yop Rhee, Polymer Composites, Vol. 22 (2001), p. 793 [5] Kuboki, T., Jar, P.
-Y.B., Forest, T.W., Journal of Materials Science, Vol. 39 (2004), p. 4637 [6] Kuboki, T., Applied Composite Materials, Vol. 12 (2005), p. 93 [7] Qiu Changjun, Safety of Special Equipment of China, Vol. 22 (2005), p.31 [8] Liu Qingsheng, Boiler and Pressure Vessel Safety of China, Vol. 20 (2003), p.26 [9] Zhang Shu, Li Laishun, Urban Public Transportation, Vol. 12 (2005), p.36 [10] Ren Penggang, Liang Guozhang, Gong Zhaohe, Natural Industry, Vol. 24 (2004), p.129 [11] Zhao Xiaowu, Zhang Fucheng, Fiber Composite, Vol. 50 (2003), p.1 [12] Yu Mei, Chinese Standard, Vol. 32 (2001), p.55

Introduction With the development of science and technology, people has realized the optical properties more and more deeply.
In this paper, the theory of optical coherence has been studied , and its application is also studied in measurement science, such as, long distance stellar diameter and material movement speed are measured and calculated in astronomy, modern measurement technology on length and its tiny changes is monitored, industrial parts surface quality is detected, spectrum wavelength and material fine spectral is analyzed, the refractive index and concentration are measured in the chemical industry .
Journal of Xi'an Institute of mining and Technology (Natural Science Edition) [J], 1997, 2 (4): 439-442 [2] Shi Zhengyou.
Journal of Xi'an Institute of mining and Technology (Natural Science Edition) [J], 1997, 3 (17): 433-446 [3] Lin Qiang, Ye Xinghao.
Beijing: Science Press, 2010:442-445 [4] Li Junchang, Xiong Bingheng, et al.