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Canadian Journal of Earth Sciences, 3, pp. 163-174. (1966) [9] Martel, S.J.
Journal of Structural Geology, 26, pp. 947-966. (2004) [11] Renshaw, C.E. and Schulson, E. universal behavior in compressive failure of brittle materials.
Journal of Structural Geology, 14(8/9), pp. 939-951
Fracture coalescence in rock-type materials under uniaxial and biaxial compression.
Crack initiation, propagation and coalescence in rock-like material containing two flaws: a numerical study based on bonded-particle model approach. 

Archives of Materials Science and Engineering, vol.28, issue 8 (2007) 453-460
Materials Science & Engineering A, vol. 631 (2015) 196-200
Materials Science & Engineering A, vol. 361, issues 1-2 (2003) 240-248
Materials and Design, vol. 56 (2014) 84-90
Destructive tests on welds in metallic materials.

Materials Science Forum. 1126 (2024) 119–127.
Key Engineering Materials. 844 (2020) 146–154.
Materials Science Forum. 1006 (2020) 179–184.
Archives of Materials Science and Engineering. 94(2) (2018) 49–54.
Materials Science Forum. 1006 (2020) 107–116.

Introduction The behaviors of cellular materials under dynamic loading are very important because their high performace of energy absorption under impact loading [1-4].
Elnasri et al.[8] presented testing results for a number of cellular materials with various microstructures around impact velocity of 55m/s.
Lunkenheimer: Foams under dynamic conditions, in Current Opinion in Colloid & Interface Science. (2007) p. 150–162
Zhao, et al.: Shock enhancement of cellular structures under impact loading: Part I Experiments, in Journal of the Mechanics and Physics of Solids. (2007) p. 2652–2671
Zhao, et al.: Shock enhancement of cellular structures under impact loading: Part II analysis, in Journal of the Mechanics and Physics of Solids. (2007) p. 2672–2686.

Acknowledgements This work was supported in part by Tianjin City High School Science & Technology Fund Planning Project (No.20080404) and Tianjin Municipal Natural Science Foundation of China (No.10JCYBJC07800) References [1] L.B.
Seo: International Journal of Advanced Manufacturing Technology Vol. 19 (2002), p. 607-617 [3] H.
C.Chung: International Journal of Production Research Vol. 39, No. 11, (2001), p.2475-2497 [6] H.Q.
Yun: Advanced Materials Research Vols. 156-157 (2011), p. 168-171 [7] J.J.
Yun: Advanced Materials Research Vols. 139–141 (2010), p. 1233-1236

Materials and methods Chemicals The nano-ZnO with a mean particle size of 15 nm was purchased from Emperor Nano Material Co.
Canadian Journal of Microbiology.Vol.30(1984),p.36-39 [5] Verstrepen K.
Science.
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Yak hair is precious raw materials of textile industry and it has important economy value for its fine elasticity, high tenacity, low cost and other excellent properties compared with wool [2].
Experimental Materials and Treatment.
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Ouyang: Journal of Southwest University for Nationalities (National Science Edition) (In Chinese) No. 4 (1983), p. 17-22 [3] K.L.
Zhang: Journal of Donghua University(Eng.

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.
Feedrate Optimization Strategy Highly efficient manufacturing can only be achieved by the maximizing material removal rate.
Liu: Journal of Materials Processing Technology Vol. 138(2) (2003), p. 513 [2] B.U.
Lazoglu: International Journal of Machine Tools and Manufacture Vol. 44 (21) (2004), p. 21 [3] L.Q.
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Kinematics analysis of multi-functional 4 - DOF mechanical arm Qiang Yu, Xinrong Liu College of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai, 334Jun Gong Road,China.
College of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai, 334Jun Gong Road, China.
International Journal of AdvancedManufacturing Technology,2008,21:275-283
Journal of Materials Processing Technology,2009(78): 24-28
Journal of Materials Processing Technology,2003(139):8-14

The tool material is cemented carbide YT15.
Acknowledgments The work is supported by Project supported by National Natural Science Foundation of China (Grant No. 50875068) ,the Research Foundation of Education Bureau of Heilongjiang Province (Grant No: 11511056).
References [1] M.Liu,J.Tkagi,A.Tsukuda:Journal of Materials Processing Technology,Vol.123(2005),pp. 234-241
[2] D.H.Wen,X.L.Liu,M.J.Wang,R.S.Hu: Journal of Dalian University of Technology,Vol.1(2003), pp.65-69
[4] R.Li,A.J.Shih:Journal of Advanced Manufacturing Technology,Vol.29(2006),pp.253-261 [5] Y.Y.Gao: Orthogonal experimental design and regression methods (China Metallurgical Industry Press, Beijing 1988).