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Acknowledgment The authors would like to thank to Advanced Material Research Group under Department of Physical science, Faculty of Science and Technology, Universiti Malaysia Terengganu for the help and guidelines given in finishing this research.
Materials Science and Engineering B.BB5 (2001)11-15
Materials Chemistry and Physics.134 (2012) 755-761
European polymer journal. 30 (2003) 897-902
Research Journal of Recent Sciences.1(11) (2012) 16-21.

Introduction The polypropylene spunbond nonwovens is the fastest-growing varieties in the nonwovens industry, it has the advantages of light weight, warmth, nice air permeability, low moisture regain and so on, the production are widely used in medical materials, geotextiles, filter materials[1-3].
Journal of Applied Polymer Science, 2001, 79(10): 1802-1808
Journal of Applied Polymer Science, 2001, 79(8):1497-1505
Journal of Membrane Science, 2002, 209(1): 255-269
Journal of Membrane Science, 2005, 260(1-2): 66–74

Because distribution of strain, strain rate and temperature in cutting layer is no uniform, so it is extremely difficult to describe materials in cutting process.
Johnson-Cook model describes plastic deformation behavior of materials under high strain rate state only, which is mainly used to describe the material property in the condition of high strain rate, large deformation and high temperature [6].
Therefore, in order to obtain effective and accurate materials, the getting stress - strain curve and developing efficient and accurate experimental setup are very important [3].
Journal of Manufacturing Science and Engineering 2006, Vol. 128, 119–129 [3] Tu˘grul Özel, Erol Zeren.Determination of work material flow stress and friction for FEA of machining using orthogonal cutting tests.
Journal of Materials Processing Technology, 153–154 (2004) 1019–1025 [4] G.R.

(4) Grouting and anchor coupling was effective method for roadway repaired in deep, materials and parameters were rational and reliable.
In addition, future study needs to be undertaken on this method, for example, grouting materials, grouting parameters, handcraft and so on.
Dynamic informative design for tunnel [J].Journal of China Safety Science [J], 2006, 02.
International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts, 1995, 32(6):537-550
Deformation of residual strength parameters of jointed rock masses using the GSI system[J].International Journal Rock Mechanics and Mining Sciences,2007,44(2):247-265

Moreover, electrospun materials possess more activity due to their surface charge density.
Materials selection and evaluation methodology 2.1 Decontamination approaches: Different classes of materials are known to act as potential decontaminants for the chemical warfare agents.
Hence a combination of these two materials such as composite fiber with a polymer chain as a backbone and the ceramic nanorods/nanofiber would be a niche material.
Self assembled honeycomb polyurethane nanofibers, SS Ramkumar et al, Journal of Applied Polymer Science; Volume 101, Issue 5, pp 3121-3124, Sept. 2006 11.
Chronakis, Journal of Materials Processing Technology, 167 pp 283-293, 2005 13.

Experimental Section Materials.
Li; et al, Journal of Applied Polymer Science, Vol. 969(6), 2005, p.2163 [5] M.
Mizoshita, et al, Advanced Materials, Vol. 15(16), 2003, p.1335 [6] M.
Akashi, Journal of Applied Polymer Science, Vol. 102(6), 2006, p.5351 [8] H.
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Acknowledgement This work was supported by National Natural Science Foundation of China.
References [1] Ullakko K Metal.Magnetically Controlled Shape Memory Alloys:A New Class of Actuator Materials.
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Gumbel has pointed out that the failure function of normal distribution reduced with service life or time[2] and this is contrary with the natural physical phenomena that the fatigue life of engineering materials will gradually decline with fatigue process. this paper will try to verify distribution features of the fatigue life of asphalt concrete in statistical in the use of two-parameter Weibull distribution theory.
References [1]X.P.Shi,T.F.Fwa,S.A.Tan.Flexural Fatigue Strength of Plain Concrete[J].ACI Materials Journal,Vol.90,No.5,September-October 1993
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[6] Byung Hwan Oh.Fatigue-Life Distribution of Concrete for Various Stress Level,ACI[J].Materials Journal,March-April 1991.

The relevant mechanical properties of three kinds of materials are shown in Tab.1.
The real stress and strain curves of three kinds of materials are shown in Fig.2.
Welo: Journal of Materials Processing Technology, Vol. 128 (2002), p. 48 [4] J.
Bstard: International Journal of Mechanical Sciences, Vol. 43 (2001), p. 1283 [5] N.
Sakaki: Journal of Materials Processing Technology, Vol. 123 (2002), p. 264 [6] M.

The material parameters of each rock and joints are shown in Table 1 and Table 2.
Table 1 Physical mechanical parameters of coal and rock Materials Bulk modulus (GPa) Shear modulus (GPa) Cohesion (MPa) Internal friction angle (o) Density (Kg/m3) Tensile strength (MPa) Siltstone 1.1 0.6 3.5 28 2570 3.2 Coal 0.68 0.5 1.2 20 1800 0.9 Medium-sandstone 2.6 1.2 5.8 36 2600 4.9 Table 2 Mechanical parameters of each joint Materials Normal stiffness(GPa) Shear stiffness (GPa) Cohesion (KPa) Internal friction angle (o) Dilatancy angle (o) Tensile strength (MPa) Siltstone 3.5 2.0 10 8 0 0 Coal 2.0 1.5 5 3 0 0 Medium-sandstone 5.5 3.5 40 10 0 0 Evolution Simulation on Overburden Stress Arch in Coal Mining.
In situ investigations of failure zone of floor strata in mining close distance coal seams[J], International Journal of Rock Mechanics & Mining Sciences, 2010,(47):865-870
Journal of University of Science and Technology Beijing. 2001,23(6):492-494.
Journal of Liaoning Technical University (Natural Science). 2000,19(3):251-254.