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Due to the porous structure, Al2O3-SiO2 aerogel is a kind of brittle materials and possesses poor mechanical properties which are virtually nil.
Chemistry of materials, 1997, 9(11): 2464-2467
Journal of sol-gel science and technology, 2012, 63(3): 445-456
Journal of non-crystalline solids, 1994, 167(1): 1-8
Journal of Materials science, 1994, 29(15): 3857-3896

This means that the tools should be made using materials resistant to hot oxidation [6].
Park, Satoshi Hirano, Stir zone microstructure of commercial purity titanium friction stir welded using pcBN tool, Materials science and engineering A, 488 (2008) 25-30
Satoh, Mechanical properties of high purity polycrystalline cBN synthesized by direct conversion sintering method, Journal of materials science, 35 (2000) 1181-1186)
Ramulu, Identification of process parameters for friction stir welding Ti-6Al-4V, Journal of engineering materials and technology, 132 (2010)
Bahemmat, Investigations on the effects of the tool material, geometry and tilt angle on friction stir welding of pure titanium, Journal of materials engineering and performance, 19 (2010) 955-962

Froyen, 2003, Microstructure and interface characteristics of B4C, SiC and Al2O3 reinforced Al matrix composites - a comparative study, Journal of Materials Processing Technology, 142, pp 738-743.
Looney,2004, Development and assessment of new quick quench stir caster design for the production of metal matrix composites, Journal of Materials Processing Technology, 106, pp 430-439.
Hashmi, 1999, Metal matrix composites: Production by the stir casting method, Journal of Materials Processing Technology, Volume 92-93, 1999, pp 1-7.
Prasad Rao,2007, Effect of scandium additions on microstructure and mechanical properties of Al-Zn-Mg alloy welds, Materials Science and Engineering A, 467, pp132-138.
Prasad Rao, 2005, Grain refinement through arc manipulation techniques in Al-Cu alloy GTA welds, Materials Science and Engineering A, 404, pp 227 - 234.

SALEH1, 3,c 1School of Materials and Minerals Resources Engineering, Engineering Campus, UniversitiSains Malaysia, 14300 NibongTebal, Pulau Pinang, Malaysia. 2Cluster for Polymer Composite (CPC), Science and Engineering Research Center, Engineering Campus, UniversitiSains Malaysia, 14300 NibongTebal, Pulau Pinang, Malaysia. 3School of Materials Engineering, Universiti Malaysia Perlis, 2600 Jejawi, Perlis, Malaysia.
For the particulate filler or reinforcement, there are several types of materials have been used.
Mohamad: Advanced Materials Research Vol. 364 (2012), p. 475-479
Mohamad:Key Engineering Materials Vol. 471 (2011), p. 596-600
Rasyid: Materials Letters Vol. 79 (2012), p. 92-95.

Fig. 3 Mechanical model of inertial rotary vibrating screen The nonlinear force of materials in Z direction is .It equals to zero when the materials are thrown off; it turns into when the materials move with machine body together.
The nonlinear torque of materials around Z axis is .
It equals to zero when the materials are thrown off; it turns into when the materials move with machine body together.
Zhao: Theory and techniques of vibrating machinery and their applications, China Science Press, Beijing, 2010
Wen: Dynamic analysis on vibration conveyor with large inclination considering material forces, Journal of Northeastern University, 3 (1996) 315~318

Then the damage evolution equation used to describe concrete materials could be fitted.
Introduction Concrete is a kind of engineering materials which used widespread, except under static loading, inevitable but also is acted by earthquake, explosion etc.
For concrete materials without damage , the stress-strain relationship in elastic stage(Within the scope of 30%) is: (1) For concrete materials with damage, in the same load, elastic strain changes from to , the stress-strain relationship is : (2) May see from the formula (3), (4), , so damage factor can be expressed : (3) If measured the in the same load and is within the scope of elastic strain is the same with the nondestructive circumstances , then , specimen is alright.
Beijing: Science Press, 1998, 7-47) [3] Burlion N, Gatuingt F: Compaction and tensile damage in concrete: constitutive modelling and application to dynamics (Comput Methods Appl.
Strain-rate-sensitive constitutive law for concrete (Journal of Engineering Mechanics, 1999, 125(12):1411-1420) [5] WangDaoRong, HuShiSheng: Shock damage evolution regularity of concrete material research(Rock mechanics and engineering, 2003, 22(2):223-226) [6] XiaoShiYun: TianZiKun concrete uniaxial tensile tests of dynamic damage (Journal of civil engineering, 2008, 41 (7) : 14-20)

In case of industrially produced insulating materials (for instance using thermal connection method) the insulating materials based on natural fibres showed comparable properties with industrially produced insulating materials on building markets.
At present there are several types of industrially produced insulating materials on the market with building materials.
These materials are bound mainly by thermal binding with bi-component fibres.
Journal of Wood Science, Volume 50, Issue 1, p. 62-67.
Bednar: Developing a model for fibrous building materials.

Experimental Materials and Method Materials.
Denizli: Journal of Hazardous Materials, Vol. 106, Issue 6(2004), p. 93 [3] J.
Wang: Journal of Environmental Science, Vol. 22, Issue 4(2010), p. 486 [8] Y.Bulut, G.
Serhatli: Journal of Hazardous Materials, Vol. 171, Issue 6 (2009), p. 717 [9] W.S.
Aydın: Journal of Hazardous Material, Vol. 144, Issue 1-2(2007), p. 300

Materials science and engineering: A. 125 (1990) 249-265
Metallurgical and materials transactions A. 29 (1998) 1221-1235
Materials Review. 20 (2006) 122-126
Materials for Mechanical Engineering. 34 (2010) 10-12
Materials for Mechanical Engineering. 35 (2011) 47-50

High temperature diffusion bonding has been applied for holding the both materials of the bushing together, which are outer steel materials and inner composite-sintered bushings.
The composite-sintered bushings are consisted of two different materials; outer steel material and inner porous sintered body respectively.
The composite-sintered bushing is made of steel outer skin with porous sintered body inside and the two (2) different materials are bonded together by high temperature diffusion bonding method.
The composite-sintered bushings are consisted of the two different materials; outer steel materials and inner porous sintered materials respectively.
Arajs, : Materials Science and Engineering, Vol.49, pp.41-46(1981)