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Science Press,1996
Journal of Arid Environments, 67(2006), pp.594-606
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Beijing: Chinese Agriculture Science and Technique Press, 1999
Beijing: Science Press, 1993.

The problem of determination of the service life is directly related to geometry, multiaxial loadings, materials and appropriate models for prediction of the failure propagation.
The problem of determination of the service life is directly related to geometry, multiaxial loadings, materials and appropriate models for prediction of the failure propagation.
The linear elastic fracture mechanics is inapplicable for describing properties of very short cracks, since elastic stress cannot accurately describe high deformation fields near the tip of small defects in high-strength materials.
Statistical analysis of experimental results shows that the material parameters in the equations of crack growth are random variables.
Journal for Numerical Methods in Engineering, Vol. 38, 2531-2545, (1995).

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For improving contact strength of the thick-walled cellular solid with irregular pores structures, which is used in high temperature self-compensating lubricating environment, a concept of relative porosity ratio αi was proposed to describe the proportion of the porosity φi of the each shape pores in the materials to the total porosity φ of the materials.
The cracks phenomenon of the materials was also observed by experiments.
Especially when the materials are used in tribology, the contact strength affects their wear resistant strongly.
Biological materials: Structure and mechanical properties.
Chinese Journal of Solid Mechanics 2010; 31: 296-301

Ltd, China) were used as starting materials in the experiments.
The room temperature luminescence from low dimensional ZnO nano-materials was reported [14-15].
Cheong: Journal of the Korean Physical Society.
Hall: [J].Science.
Libby: Science.

Rujijanagul1,a,* 1Department of Physics and Materials science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand 2Department of Industrial Engineering, Faculty of Engineering, Rajamangala University of Technology Lanna, Chiang Mai, 50300 Thailand arujijanagul@yahoo.com Keywords: Hydroxyapatite; Bioceramic, Metal Oxide, Abstract.
Acknowledgements The authors would like to thank Thailand Research Fund (FRT),National Metal and Materials technology center, Office of the Higher Education Commission (OHEC), Faculty of Science and the Graduate school, Chiang Mai University, Thailand of financial support.
Tas, Journal of The American Ceramic Society 81 (1998) 2245
Tontowi, Materials Science Forum 561–565 (2007) 1441
[11] A.Raksujarit,K.Pengpat,G.Rujijanagul,T.Tunkasiri,Materials&Design, 31(4) (2010), 1658-1660

Key words: Creep, Thin films, Dislocations, Mesoscopic simulations, Multi-scale modeling 1 Introduction The understanding of deformation mechanisms in small scale structures is one of the fundamental problems in materials science to be solved.
The advent of nanostructured materials and the need to design microelectronic and micromechanical devices with length scales of nanometers require not only a profound understanding, but also a reliable prediction of mechanical properties of such structures.
Gleiter, Deformation mechanism crossover and mechanical behaviour in nanocrystalline materials., Philosophical Magazine Letters 83 (2003) 385-393
Zbib (Eds.), MRS Symposium Proceedings 779, Materials Research Society, Pittsburgh, USA, 2003, p.
Herman (Ed.), Advances in Materials Research, Vol. 3, Interscience Publishers, New York, 1968, Ch. 1

The resulting materials indicated the mesoporous Al2O3 has large surface area (412 m2/g), the good mesoporous structure of the Al2O3 support resulted in the high dispersion of active species and the rapid diffusion of reactants and products in the pores, hence, improved the HDO activity of NiMoS/Al2O3catalysts.
Materials and methods Hydrothermal carbonization (HTC) and compress into pellet.
(Ed.), New and Future Developments in Catalysis, Current catalytic processes with hybrid materials and composites for heterogeneous catalysis, Chapter, 4, Elsevier, Amsterdam (2013) p. 79-104 [2] D.
Luo: Synthesis of mesoporous Al2O3 with large surface area and large pore diameter by improved precipitation method: Microporous and Mesoporous Materials Vol. 193(2014), p. 47-53 [13] W.
Dini: Electrodeposition: The Material Science of Coatings and Substrates (Noyes Publications, New Jersey 1993) [17] J.W.

The workbench is made of HT250, the parameters of material are as follows: elastic modulus is 1.1e11pa, density is 7340kg／m3, poisson ratio is 0.27.
Acknowledgments This paper is supported by National Natural Science Foundation of China (NO.50775043), Guangdong Province Science and technology projects (No:2009A010200004) and Natural Science Foundation of Guangdong Province(NO.815100900100005)．
Journal Of Wuhan University Of Technology, 2008（5）:117-121 [8] Chen Xuedong ,Bao Xiulan.
Journal Of Huazhong University Of Science And Technology.
Nature Science,2005.(11):5-8 [9] Chen Aimin, Ma Ping ,Gong Zheng.

Microwave heat has its unique properties such as deep heating effect to the reactants, uniform heating, no direct contact with heat source and heating materials and selective heating [7, 8].
Science and Technology Innovation Herald. 29(2009), p84-84 [2] Chi Guangjun, Fan Jun, Jiao Tingting.
Environmental Science and Technology. 12(2010), p160-163 [3] E.Çaliskan, J.M.Bermudez.
Journal of Environmental Management. 102(2012), p134-140 [4] Meera A.
Journal of Environmental Management. 102(2012), p134-140 [8] Hu Siqian, Guo Yanhua, Chen Fang.