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Mergheim et al.[8] proposed the computational modelling of cohesive cracks in quasi-brittle materials, whereby the discontinuity was allowed to propagate freely through the elements.
D is the material matrix.
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (No.50804014, 41072224), New Century Excellent Talents in University (NCET-08-0662), Science Research Foundation of He’nan Educational Committee (2008A44005), Foundation of Youths Key Teacher by the He’nan Educational Committee (2009GGJS-037).
M., and Gioia, G.: Computer Methods in Applied Mechanics and Engineering, Vol. 90 (1990), p. 829 [6] Belytschko T, and Black T.: International Journal for Numerical Methods in Engineering, Vol. 45, (1999), p. 601– 620 [7] Goangseup Zi, and Ted Belytschko: International Journal for Numerical Methods in Engineering.
Steinmann: International Journal for Numerical Methods in Engineering, Vol. 63, (2005) p.276–289

Introduction Zinc hydroxystannate [ZnSn(OH)6] are well-documented as nontoxic flame-retardant and smoke suppressant additives for a wide range of plastics, rubbers, paints, and other polymeric materials[1-3].
[6] Zhouguang Lu, Yougen Tang: Materials Chemistry and Physics. vol. 92 (2005). p. 5-9
[7] Zhang YanJun, Guo Min, Zhang Mei, et al: Journal of Crystal Growth. vol. 308 (2007) p. 99-104
[11] Qun Zhang, Chuanbao Chen, Liang Fang: Materials Chemistry and Physics. vol. 111 (2008). p. 191–194
[12] Anjian Xie, Zongwei Yuan, Yuhua Shen: Journal of Crystal Growth. vol. 276 (2005). p. 265-274.

Experimental section 2.1 Materials The PLA used in this paper were natureworks Biopolymer 3001D with basic physical properties listed in table 1.
All of the materials were dried at 50°C for 24h.
High-speed Mixer SHR-10A Zhangjiagang Yili Machinery Co., Ltd Electronic universal testing machine CMT5105 Shenzhen Measurement Technology Co., Ltd Impact testing machine XJ-300A Wuzhong Materials Tester Co., Ltd Contact angle meter SL2008 Shanghai Solon information Co., Ltd Result and discussion 3.1 Contact angles of PLA, POE and POE-g-MAH The contact angles of PLA, POE and POE-g-MAH with water were shown in fig. 1.
Journal of Applied Polymer Science Vol. 103 No. 3(2007), 1382-1388
Journal of Applied Polymer Science Vol. 81 No. 5(2001), 1277-1285

The Effect of Polyethyleneimine (PEI) on the Texture and Morphology of YBCO Films Wanchen Xu, Yueling Bai, Jianhui Fang* and Chuanbing Cai Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China wanchengb@163.com, yuelingbai@shu.edu.cn, jhfang@shu.edu.cn (corresponding author), cbcai@staff.shu.edu.cn Keywords: Polyethyleneimine (PEI), YBCO film, Surface morphology Abstract.
Acknowledgments This work was supported by the Key Project of Shanghai Science and Technology (11DZ1100300), Instrumental Analysis and Research Center of Shanghai University.
Ye, Rapid Synthesis of YBCO Thick Superconducting Films by Low Fluorine TFA-MOD Method, Journal of Inorganic Materials. 25 (2010) 971-974
Wang, Rapid preparation of YBCO superconductive film by the nitrate PAD solution deposition, Journal of Functional Materials. 43 (2012) 984-986
Li, Effect of polyvinylpyrrolidon (PVP) in precursor solution on the morphology and properties of YBCO films, Journal of Functional Materials. 40 (2009) 1663-1665.

One of the most common material degradation mechanisms in steel structures of substations is fatigue.
In high-cycle fatigue situations, materials performance is commonly characterized by an S-N curve [3].
Journal of Constructional Steel Research, Vol. 34(1) (1995), p. 75-101
[3] Subramanyan S: A cumulative damage rule based on the knee point of the SN curve, Journal of Engineering Materials and Technology, Vol.98 (1976), p. 316
[4] Rychlik I: A new definition of the rainflow cycle counting method, International journal of fatigue, Vol. 9(2) (1987), p. 119-121

WC-Co composite cemented carbide tool materials reinforced with Ni and SiC nano particles were fabricated by using powder metallurgy followed by hot extrusion.
In order to improve microstructure and properties of cemented carbide tool materials; to optimize compositions of cemented carbide.
The cutting contrast experiments were carried on in order to study abrasion mechanism of cemented carbide tool materials.
Acknowledgement The authors express their deep gratitude to Nantong Municipial Science and Technology Bureau under Grant No.K2009021.
References [1] Hideo Awaji, Seong-Min Choi,Eisuke Yagi：Mechanics of Materials, Vol.(34) 2002, pp.411-422 [2] Yu-dong XU, Ning Liu, Min Shi: Cemented Carbides (in Chinese), Vol. 22 (2005), pp.112-116 [3] W.F.Sales, L.A.Costa, S.C.Santos: Advanced Manufacturing Technology, Vol. 41(2009), pp.660-669 [4] Xiao-bo Zhang, Ning Liu, Yong Li: Journal of The Chinese ceramic society,Vol.36(2008), pp.503-509 [5] xiao-bo Zhang , Ning Liu, Yan Chen: The Chinese Journal of Nonferrous Metals(In Chinese), Vol.18( 2008), pp.1280-1285

Advance in Earth Sciences, Vol. 16(2001), p. 549 (in Chinese) [2] J.
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Applied Mechanics and Materials, Vol. 295-298(2013), p. 821 [12] DHI Water and Environment.
Beijing: Science press, 2008.

Introduction Porous metal materials is a new structural and functional materials.
Metal foams is a kind of porous metal materials.
As structural materials, aluminium foams are non-toxic, light, artistic and recycled.
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The optimization of thermomechanical treatment and properties of Cu-Fe-P alloy C194 Xiaozhu Chen1a, Yuanzheng Yang1b, Qiusheng Lin1c and Xiaojun Bai1,2d 1The Faculty of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China P.R. 2Shenzhen Key Laboratory of Special Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060,China P.R.
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