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Introduction The composite materials mean materials that are designed and consisted of more excellent properties than one individual material comparatively by combining more than two kinds of the material.
However, metal materials tend to stress the bone tissue due to the difference in rigidity.
Yoon, Advanced Materials Research, 97-101 (2010) 1772-1775
Gunnink, Materials & Design, 7-6 (1986) 287-300
Soutis, Fibre reinforced composites in aircraft construction, Progress in Aerospace Sciences, 41-2 (2005) 143-151

According to the similarity principle the mechanical parameters of sandstone, rock bolts and their corresponding similar materials used in tests are shown in Table 1 and 2 when the similarity ration is designed as 10.
Table 1 Physical and mechanical parameters for rock-like materials and sandstone parameters Compressive strength σc[MPa] Tensile strengh σt[MPa] Elastic modulus E[GPa] Poission ratio ν Toughness KIC[MPa·m0.5] Unit weight ρ[g·cm-3] Rock-like material 35.54 2.82 17.92 0.192 0.512 2.3 Sandstone 20～170 4～25 4.9～78.5 0.02-0.2 0.22～2.26 2.1 Table 2 Mechanical parameters for rock bolt and rockbolt-like material parameters Tensile strengh σt[MPa] Elastic modulus E[GPa] Rockbolt-like material 50-60 20-22 Rockbolt 500-600 200-220 A new rubber powder modified cement mortar is made to satisfy the similarity principle.
Its mechanical properties depend on the materials and manufacture techniques for the glass fiber reinforce plastic.
Liu, Chinese Journal of Geotechnical engineering, Vol.10(1988), p. 8-19 [7] Z.H.Zou, Z.L.Wang, Chinese Journal of Geotechnical Engineering, Vol. 15(1993), p.71-79 [8] J.H.
Zhang, Chinese Journal of Geotechnical Engineering, Vol. 28(2006), p.29-32

Introduction Dies, moulds and complex shapes made of advanced materials require a high quality surface finish.
This process can finish the materials ranging from soft aluminum to tough advanced materials.
Al alloy is softer material compared to its MMCs so it is sheared more for the same input conditions compared to other two materials.
DARO/08/1161387/M/I), Department of Science and Technology (Project No.
Rhoades, “Abrasive Flow Machining: A Case Study,” Journal of Materials Processing Technology, vol 28, 1991, pp- 107-116

Plastic materials have been collected and passed through a No-4 sieve (4.76mm).
Materials collection was conducted according to design.
Then the trimmed plastic materials were washed in water to clean them.
After performing the laboratory test on trimmed plastic materials, we attained the properties of plastic materials in Table 2.
Materials Journal, Vol. 106, No. 4, (2009), 381–389. https://doi.org/10.14359/56659 [11] “ACI PRC-211.1-91: Standard Practice for Selecting Proportions for Normal, Heavyweight, and Mass Concrete (Reapproved 2009).”

Journal of Materials Engineering, 2016, 44(8): 1-10
Materials Science & Engineering A, 2008, 485(1): 130-139
Journal of Aeronautical Materials, 2003, 23(2): 14-17
Materials Science and Engineering: A, 2018:S0921509318301540
Materials Science & Engineering A, 2005, 393(1): 204-212

Therefore, EDM is an efficient way of processing for the high hardness materials which are difficult to be processed by ordinary grinding wheel.
The electrode rotational speed, gap voltage, pulse width and electrode materials were optimized to improve the efficiency and accuracy of processing.
Journal of Aerospace Power, 2016, 31(2)
Journal of Northwest A & F University (Natural Science Edition), 2006, 34(9):187-192
Water Science & Technology A Journal of the International Association on Water Pollution Research, 2015, 73(7)

Inorganic materials possess better electrical performance, mechanical property and low costs, so the research of inorganic materials becomes focal point of all countries.
Sol-gel routes of production have been developed to produce conducting SiO2-P2O5-Ti02 glass materials.
From Fig.7 we found the XRD didn’t show any sharp peaks, indicating that this materials prepared by sol-gel method were amorphous in nature.
Polymer materials science and engineering,2006.1(1): 99-102
Journal of power sources,2005: 67-73

Materials and Methods Materials.
Shubin, Journal of South China University of Technology(Natural Science Edition), Vol.36(2008), p.11-15 [4] P.
Journal of South China University of Technology(Natural Science Edition), Vol.37(2009), p.67-64 [5] Q.
Advanced Materials Research Vols.129-131 (2010), p.1055-1058 [6] W.
International Journal of Plant Science, vol.163(2002), p.755-763

Materials and Methodology The three-dimensional (3D) geometry of thoracic aorta was created as an elastic artery and further modified and simplified for the heart failure patient.
While table 1 shows the material and mesh properties of thoracic aorta and blood.
Acknowledgment This work partly sponsored by the National Natural Science Foundation of China (Grant No. 11072012, 11272022).This work is also sponsored by the National Natural Science Foundation of China (Grant No.10872013, 31070754).
Theoretical foundation,’’ Journal of Fluid Mechanics, 271, pp:209–285, 1994
Numerical results,’’ Journal of Fluid Mechanics, 271,pp:286–339, 1994

However, different from the differential casting for medal, the mould used here is made from silicon rubber belonging to super-elasticity materials and the filling material is Polyamine resin whose viscosity varies within a larger range [3, 4].
Therefore, a silicone rubber-based finite element model is established, fully considerding silicone rubber materials nonlinearity, geometric nonlinearity and incompressible properties.
B: Journal of Applied Polymer Science, Vol.119 (2011) No.4, pp. 2143-2152
Yu: Journal of University of Science and technology of china, Vol.34 (2004) No.5, pp. 575-580
Guo: Chinese Journal of Noise and Vibration Control, (2010) No.5, pp.175-176.