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By adopting the asymptotic expansion method, the higher order crack tip asymptotic fields which are similar to the Williams’ solutions of plane crack problems in homogenous materials are obtained.
The boundary conditions of the crack surface are: (3) Higher Order Crack-Tip Asymptotic Field The studies of Delale[4,5] show that the crack tip stress field would be equipped with the same square root singularity as that of homogeneous materials when the material prosperities of different composite materials at the interfaces are continuous.
The effect of material nonhomogeneity appears in higher order items.
Erdogan: Journal of Applied Mechanics.
Noda: Journal of Applied Mechanics.

Journal of Intelligent Material Systems and Structures Vol. 3 (1998), p. 189
Smart Materials and Structures Vol. 3 (2001), p. 548
Journal of Intelligent Material Systems and Structures Vol. 11 (2000) , p. 246
Journal of Building Materials Vol. 7(2004), p.145.
Song, Smart Materials and Structures, Vol. 18(2009), p. 1

Morelli 1 1 Department of Materials Engineering / Universidade Federal de São Carlos Rodovia Washington Luis, Km 235. 13565-905.
São Carlos/SP, Brazil 2 Department of Materials Science and Technology / Federal University of Bahia Rua Aristides Novis, 02.
Lin and S.L Swartz: Journal of Membrane Science Vol. 150 (1998), p. 87
Hosseini: International Journal of Enviornmental Science and Technology Vol. 6 (2006), p. 105
Xu et al.: Journal of Membrane Science Vol. 166 (2000), p. 13

Journal of Advanced Materials, 25(19), 2666-2671
Journal of Chemistry of Materials, 26(7), 2368–2373
Journal of Materials Chemistry, 22(11), 5164-5170
Journal of Materials Chemistry C, 2(17), 3270-3277
Journal of Advanced Materials, 26(17), 2750-2754

Grimes: Journal of Materials Research.
Tokudome: Journal Materials Chemistry.
Kile: Advanced Materials.
Grimes: Solar Energy Materials and Solar Cells.
Liou: World Academy of Science, Engineering and Technology.

In this study, the PANI / PP composite conductive fiber filler has a larger L/D (Length/Diameter)ratio ,better flexibility, more corrosion resistance, and lower cost compared to the traditional conductive materials such as graphite, carbon black, carbon fiber, steel fiber and so on.
Experimental Experiment materials.
Fig.2 The effect of fiber content to conductivity of asphalt mixture Fig.3 seepage curve diagram The above-mentioned classical percolation theory was based on the three-dimensional model, combined with the two-phase composite materials, so it can’t be used as a general rules.
But it also contained some other multi-phase materials such as coarse aggregate, slag and asphalt, and conductive fibers.
References [1] S.P.Wu, L.T.Mo, Z.H.Shui: submitted to Journal of Carbon. (2005) [2] S.P.Wu, G.Bo, J.Qiu: submitted to Journal of Huazhong University of Science and Technology. (2008) [3] Z.Q.Tang, J.Qian, Z.F.Yang: submitted to Journal of Chongqing Architecture University. (2006) [4] H.Zhang, L.J.Wang: submitted to Journal of Highway. (2008) [5] H.Zhang, L.J.Wang: submitted to Journal of Highway Foreign and Domestic. (2008) [6] M.L.Clingerman, J.A.King, K.H.Schulz: submitted to Journal of Applied Polymer Science. (2002) [7] M.Sumita, S.Asai, N.Miyadera: submitted to Journal of Colloed Polymer Science.,1986, [8] M.Wber, M.R.Kamal: submitted to Journal of Polymer Composites. (1997) [9] J.Vilcakova, P.Saha, O.Quadrat. submitted to Journal of European Polymer Journal.(2002) [10] Y.N.Yu, G.Q.Liu.

Journal of Materials Processing Technology, 186(1- 3): 45–53, 2007
Journal of Materials Processing Technology, 140(1-3):447–453, 2003
Journal of Materials Processing Technology, 209(8):3688–3695, 2009
Journal of materials processing technology, 130:42–46, 2002
In Materials Science Forum, volume 729, pages 85–90.

Measurement for Elastic Modulus of Ultra-Thin Glass by Cantilever Beam Method Xiaogen Liua, Yiwang Baob, Detian Wanc State Key Laboratory of Green Building Materials, China Building Materials Academy, 100024 Beijing, P.
Elastic modulus is an important physical parameter for mechanical design and material research, exact measurement of the elastic modulus is the basis of product design, manufacture and reliability analysis for ultra-thin glass materials and structure.
Journal of Aeronautical Materials,2001,2l(4): 53
[7] J C Lü, C T Zhou, M M Liu .Effect of beam length on determination of dynamic elastic modulus of materials by means of cantilevel beam method[J].
Journal of Hohai University (Natural Sciences), 2006, 34(5): 561.

Polymeric materials such as computer monitors can produce much smoke which contains many toxicity ingredients.
Journal of Safety and Environment, 2008, 8(2): 117-120
Journal of Engineering Thermophysics, 2005, 26(z1):237-240
Journal of Thermal Science and Technology, 2004,3(4): 338-342
[9] Shi Long,Zhang Ruifang,Xie Qiyuan.Kinetic study on the enclosure materials of computer monitor[J].Fire Safety Science, 2009,18(3): 175-181

Modelling of Nitrogen and Phosphorus Flow in Wastewater Management: Case Study for Terengganu, Malaysia Nora’aini Ali1,a,Latifah Ghani1,band Noor Zalina Mahmood2,c 1Department of Engineering Science, Faculty Science and Technology, University Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia 2Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia anoraaini@umt.edu.my, blatifahamri732@yahoo.com, calin@um.edu.my Keywords:Material Flow Analysis (MFA), Wastewater, Nitrogen (N), Phosphorus (P), Terengganu Abstract.The Material Flow Analysis (MFA) method is often discussed in terms of water resources management. 
§ All tertiary wastewater facilities eliminate P and N (either by chemical or biological removal) bas a non-recyclable material (metal-phosphate precipitates or precipitates together with numerous other waste materials as sludge).
Journal of Cleaner Production 12 (2003), p 919–934
Practical Handbook of Material Flow Analysis, Boca Raton, Florida, (2003)
Journal of Engineering Science and Technology.