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When the stress is large enough and action time is long enough, the stress will cause the macromolecular chain fracture; materials performance is destructed, and generates free radicals in the production chain.
Journal of Donghua University.
Journal of Wuhan University of Technology.
China Journal of Highway and Transport.
Heilongjiang Science and Technology of Water Conservancy., Vol.34(1), p.33-34. (2006) [10] Victor Elias．Durability/Corrosion of soil reinforced Structures.

Finite Element Modeling of Upper Ball Joint in a Two-Step Hot Forging Process Nattarawee Siripath1,a, Sedthawatt Sucharitpwatskul2,b and Surasak Suranuntchai3,c* 1, 3Department of Tool and Materials Engineering, Faculty of Engineering, King Mongkut’s University of Technology, Thonburi, Thailand. 2National Science and Technology Development Agency (NSTDA), Thailand Science Park Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani, Thailand.
Materials and Experimental Procedure The SNCM8 commercial alloy steel was used in this work, which the chemical composition is shown in Table 1.
The heat transfer coefficient between the workpiece material and dies material have been assumed 11 N/s·mm·°C.
Shen: Cold and hot forging: Fundamentals and applications, Materials Park, OH, ASM International (2004)
Journal of Physics: Conference Series Vol. 1510 (2020), pp 1-3 [10] N.

Experimental procedures: Material:The material selected in the experiments is 2mm thick AA2024-T3 plate cut from stock sheet, the shape of the plate and specimens is showed in Fig.1, the working area is 20×5mm2 in the center.
Reference [1]М{TTP}1052 .Gutman, Mechanochemistry and Corrosion Prevention of Metals[M].Peking: Science Publication,1989 [2]Th.Magnin,Advance in corrosion-deformation interactions[A],1996 [3]V.Vignal,N.Mary,C.Valot.etc,Influence of elastic deformation on intiation of pits on duplex stainless stees[J],Electrochemical and solidstate letters, 2004,7 (4):C39-C42, [4]E.M.Gutman,G.Solovioff,D.Eliezer.The Mechanochemical Behavior of Type 316L Stainless Steel[J],Corrosion Science.1996,38(7):1141-1145 [5]Saburou Kuwano,Takeo Oki,Effect of applied stress on SCC susceptibility and polarization behaviour of SUS316 type stainless steel[J],Zairyo,31:828-833 [6]Xiaodong Liu,G.S.Frankel,B.Zoofan,S.I.Rokhlin,Effect of applied tensile stress on intergranular corrosion of AA2024-T3[J],Corrosion science,2004,46:405-425 [7]Xiaodong Liu,G.S.
Frankel.Effects of compressive stress on localized corrosion in AA2024-T3[J],Corrosion science,2006 [8]P.L.bonora,M.Andrei,corrosion behavior of stressed magnesium alloys[J], Corrosion science, 2002:729-749 [9]Koichi Saito,Jiro Kuniya,mechanochemical model to predict stress corrosion crack growth of stainless steel in high temperature water[J],corrosion science,2001,43: 1751-1766 [10]Keiichiro Tohgo,Hiromitsu Suzuki,Yoshinobu Shimamura.etc,Monte Carlo simulation of stress corrosion cracking on a smooth surface of sensitized stainless steel type304,Corrosion Science,2009,51(9):2208-2217 [11]K.K.Sankaran,R.Perez,K.V.Jata.Effects of Pitting Corrosion on the Fatigue Behavior of Aluminum Alloy 7075-T6: Modeling and Experimental Studies[J],Materials Science and Engineering 2001,A297:223-229 [12]G.S.Chen,K.C.Wan.M.Gao Transition from Pitting to Fatigue Crack Growth modeling of Corrosion Fatigue Crack Nucleation in a 2024-T3 Aluminum Alloy[J],Material Science and Engineering, 1996,A219:126
-132 [13]Ben-Hamua,A.Eliezer,E.M.Gutman, Electrochemical behavior of magnesium alloys strained in buffer solutions[J],Electrochimica Acta,2006,52:304–313 [14]Hiroyuki Iwanaga,Takeo Oki,pit formation in stainless steel under applied stress with or without chamfering[J],Zairyo,35:208-214 [15]T.suter,E.G,Webb,H.bohni,R.C.Alkire，pit initiation on stainless steels in 1M NaCl with and without Mechanical stress[J],Journal of the electrochemical society,148(5), B174-B185,2001 [16]G.BenHamua,A.Eliezer,E.M.Gutman.etc,Mechanoelectrochemical behavior of magnesium alloys [J],Materials Science and Engineering.2006:109–114 [17]A.Eliezer,E.M.Gutman,Ya.Unigovski,J.Haddad,G.Ben-Hamua,Mechanoelectrochemical behavior of magnesium alloys[J],Materials Science and Engineering,2006:109–114 [18]Barry C,Syrett.PPR curves-A New Method of Assessing Pitting Corrosion Resistance [J],corrosion,1977:P221-224 [19]Rao sixian, Research on the rule and application of applied stress to corrosion thermodynamics and
kinetics of metals[D].Beijing:Ph.D dissertation of Beijing university of aeronautics and astronautics,China,2007 [20]V.Guillaumin，G.Mankowski，Localized corrosion of 2024-T351 aluminium alloy in chloride media[J],Corrosion science,1999:421-438

The free corrosion potential (Ek) is a thermodynamics parameter to estimate the corrosion resistance of materials [6].
The corrosions and Protection of Materials, Metallurgy Industry Press, In Chinese 2001 [2] Jimei Xiao, Chunan Cao.
Corrosion Science, 2003, 45: 403 [5] I Gacia, J J De Damborenea.
Corrosion Science, 1998, 40 (1) : 1411 [6] Jimei Xiao, Chunan Cao.
Journal of Chinese Society for Corrosion and Protection, In Chinese, 2004, 24 (2) : 75

After industrial revolution, new materials, technologies and functions continue to emerge.
Conceptual design, under the integrated regional and personal quality of life experience, to a large extent, reflects the needs of the relevant science and technology.
Increase of the types of products includes that of the final consumer goods and intermediate types: increase of final consumer goods, such as notebook computers, electronic books, new games, new movies and TV series, etc.: increase of the intermediate types, such as new painting materials, computer hard disks of new parts, new automotive electronics equipment and new mechanical processing equipment.
Brief History of Science and Technology [Ｍ]，Publishing House of Beijing People 1988: 35－112 (In Chinese) [2]　Cao Haifeng.
Research of Creative Industry from economic perspective [Ｊ]，Lanzhou Academic Journal 2007:（5）：85-86 ( In Chinese) [3] Jonarthan Ｍ．Ｗoodham．Twentieth Century Desigen[Ｍ]，oxford university press,oxford New York,1997:45-49

Preparation and Properties of Recycled PET Fibers Filled Polyethylene Composites Zhigang Wanga, Wenhao Xib, Jingbo Zhouc, Jiaming Xud and Guang Lie* College of Material Science and Engineering, Donghua University, 2999 North Renmin road, Shanghai 201620 China.
Nowadays, the regeneration research of PET fibers are mainly recycled for raw materials of spinning and plastic by physical/chemical methods[2].
Materials and Methods Materials.
Niu, Renewability of waste textile, Journal of Textile Research. 32 (2011) 147-152
Shi, Exploitation of recycling of waste PET for textile product, Progress in Textile Science & Technology. 2008;(1):29-31

Effect of alternating traveling magnetic field on the removal of inclusions from aluminum melt Hongzhang Deng1,2a, Qiulin Li*1b, Dingguo Yang1,2c, Wei Liu2d 1Advanced Materials Institute, Graduate School at Shenzhen.
Tsinghua University, Shenzhen 518055, China 2School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China adhz12@mails.tsinghua.edu.cn, b liql@sz.tsinghua.edu.cn, cyangdingguo@live.cn, dliuw@mail.tsinghua.edu.cn Keywords: alternating traveling magnetic field, agglomeration, clusters, primary silicon Abstract: Alternating traveling magnetic field (TMF) was introduced to agglomerate the inclusions with a density smaller than surrounding melt.
The Chinese Journal of Nonferrous Metals, 1999, 95(1): 51-56.
A, 2007,vol. 38A, pp. 1104–10 [6] Kolin.A:Science,1953, vol. 117,pp. 134~37 [7] D.
Jounral of Materials Processing Technology [J]. 2007, 189(1-3) : 13 [12] Y.J.

The first generation offers learns teaching materials and related information as well as other associated education website links.
In addition to offering online learning materials, the second generation as well requests learners to conduct two-way asynchronous communications via emails, e-bulletin boards, and online exercises and measures.
The workload of plenty of network course development is just two to three weeks’ work by two to three persons with the contents of nothing but piling up classroom teaching materials
Reference [1] JIANG Feng,WANG Chenghua,LIU Guozhu.Collaborative Learning System Based on Coalitions of Agents[J].Computer Science,2009(6):125-128
[7] CHEN Ping,ZHANG Fei.A Research and Design on Personalization Studying System Based on Agent[J].Journal of Heze University,2010(10):29-32.

Research Institute, Durgapur-713209, India. 2Dept. of Mechanical Engineering, Jadavpur University, Kolkata-70032, India. 3Dept. of Mechanical Engineering, Indian Institute of Science, Bangalore-560012, India aprosenjit.sct.cmeri@gmail.com, bchimadri@gmail.com, cpradip@mecheng.iisc.ernet.in Keywords: Rheology, Semi-solid slurry, A356 alloy, Shear thinning, Thixotropy.
In the present work, rheological characterization of semisolid A356 Al alloy has been carried out to analyze the flow behaviour of the material in the semi-solid state.
[2] Lashkari, O., Ghomashchi R., The implication of rheology in semi-solid metal processes: An overview, Journal of Materials Processing Technology 182 (2007) 229–240
[4] Atkinson, H.V., Modelling the semisolid processing of metallic alloys, Progress in Materials Science 50 (2005) 341-412
H, Rheological behaviour of partially solidified aluminium matrix composites, Materials Science and Engineering A, 183(1/2) (1994) 247−256

Polyurethane insulation board Good insulation performance Excellent thermal performance and water resistance, is currently the lowest thermal conductivity and the highest thermal resistance insulation materials in building materials, impermeability, and long service life.
Disadvantage is the poor material physical stability, no price advantage.
In the original design, building's exterior surface dilapidated, many decorative material has been peeled off, the outer decoration surface layer multiple hollowing, seriously affect the appearance and use of buildings.
Journal of Shenyang Construction University (SOCIAL SCIENCE EDITION), 2010,01:21-25
Sichuan Building Science,2014,01:313 -316 +323.