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Each of these regions was described in terms of a characteristic mechanical property, which was a function of mechanical strength of the solid material and cellular parameters.
Fig. 4 Finite elements boundary condition Meshing and physical properties of material.
Vol. 5(2007), p. 245-251 [4] A.L.Hayter and A.C.Smith: Journal of Materials Science Vol. 23 (1988), p.736-743 [5] A.L.Hayter, A.C.Smith and P.Richmond: Journal of Materials Science Vol. 21 (1986), p. 3729-3736 [6] Barrett, A.H. and Peleg, M: J.
Tan: Journal of Food Process Engineering Vol. 19(1996), p. 445-456 [8] S.C.Warburton, A.M.Donald and A.C.Smith: Journal of Materials Science Vol. 27 (1992), p. 1469-1474 [9] L.G.
Ashby: Cellular Solids: Structure and Properties (Cambridge University Press, U.K. 1997) [10] Benli Yuan and Zixing Lu: Journal of Mechanical Strength Vol. 29(2007), p. 627-631 [11] Yanjun Shang, Tianjian Lu and Changqing Chen: Chinese Journal of Solid Mechanics Vol. 30(2009), p.325-332 [12] Roderick Agbisit, Sajid Alavi, Enzhi Cheng, Thomas Herald and Allen Trater: Journal of Texture Studies Vol. 38(2007), p.199-219

At this point, Liu and Tani [2-7] and Han [8-11] have done a lot of works on the wave propagation in functionally graded materials and functionally gradient piezoelectric materials.
Tani,ASME Journal of Vibration and Acoustics, Vol. 116 (1994), p. 440
Liu, et al., International Journal of Solids and Structures, Vol. 38 (2001), p. 3021
Liu, Smart Materials and Structures, Vol. 12(6) (2003), p. 962
Wang, Smart Materials and Structures, Vol. 14 (2005), p. 137

The first stage of weight loss is between 280 ˚C and 450 ˚C, at which the decomposition of epoxide resin leads to volatile materials release.
Experimental Materials and equipments The thermal analysis samples are RF4-type PCB from discarded computers, which are crushed to particles smaller than 0.2mm.
This is due to that the added Na2CO3 reduces the content of organic materials in the sample.
The first stage of weight loss is between 280 ˚C and 450 ˚C, at which the decomposition of epoxide resin leads to volatile materials release.
Journal Fuel Chemistry and Technology, 35(2007): 548-552.

After piling up in materials, the molecular form is reconstructed and causes increased stress [1].
To some extent, materials science, and in-depth experimental mechanical studies of microstructure, reveal the processes and mechanisms of diffusion with regard to degradation and embrittlement and fracture, but not completely [25, 26].
Bohmert, Influence of hydrogen on toughness of irradiated reactor pressure vessel steels, Journal of Nuclear Materials, 2006, 359, 114-21 [5] A.
Anzai, Modeling of hydrogen distribution at a crack tip, Materials Science and Engineering, 1996, 206, 1-13 [8] J.
Louthan, Hydrogen embrittlement of metals: a primer for the failure analyst materials science and technology, Savannah River National Laboratory, Aiken, South Carolina 29808 [27] U.

Arifin1 Advanced Optical Material Research Group, Department of Physics, Faculty of Science, Universiti Teknologi Malaysia, 81310, Skudai, Johor Bahru, Johor, Malaysia aezza_sazali88@yahoo.com.my, bmrahim057@gmail.com, camaninamatjan@yahoo.com Keywords: Crystallization kinetics; Avrami exponent; Ozawa method Abstract.
[3] Animesh Jha, Shaoxing Shen, Linhui Huang, Elly Richerds and Yoris Lousteau, Rare-Earth Doped Glass Waveguides for Visible, Near-Ir and Mid-Ir Lasers and Amplifiers Journal Of Materials Science: Materials In Electronics 18.
Kumar, Crystallization Kinetics Of Some Se - Te - Ag Chalcogenide Glasses Journal Of Optoelectronic And Advanced Material 6, (2) (2004) 441-448
Trindade, Kinetic Study of Dipivaloylmethane by Ozawa Method, Journal of Thermal Analysis and Calorimetry, 75 (2004) 591–597
Kumar, Crystallization Kinetics of Some Se - Te - Ag Chalcogenide Glasses Journal of Optoelectronic and Advanced Material 6, (2) (2004) 441-448

Experimental 2.1 Materials and the preparation process The filler used in this study was Kevlar pulp (Type 1F538, density, 1.41 g/mm3, diameter, 14 um, average length, 1.7 mm, manufactured by DuPont Inc., Brownslane, KY, USA).
The applied load was mainly borne by Kevlar fiber and the wear resistance of the materials has been greatly improved by incorporating Kevlar pulp. 4.
Conclusion The incorporation of Kevlar pulp into PEI can increase the tensile properties of the composite but either increase or decrease friction and wear properties of the materials, depending on the volume fraction of Kevlar.
Shanghai Municipal Natural Science Foundation：11ZR1413600.
Narayanan, Viscoelastic properties of Kevlar-29 fabric tape strength member , Mechanics of Materials, Volume 40, Issue 11, November 2008, Pages 949-960 [3] Li-Qiang Shen, Zhi-Kang Xu, Zhen-Mei Liu, You-Yi Xu, Ultrafiltration hollow fiber membranes of sulfonated polyetherimide/polyetherimide blends: preparation, morphologies and anti-fouling properties, Journal of Membrane Science, Volume 218, Issues 1-2, 1 July 2003, Pages 279-293 [4] Guijun Xian, Zhong Zhang, Sliding wear of polyetherimide matrix composites: I.

Materials and Methods 2.1 Plant Selection and Coagulant Preparation Several crucial stages are entailed in the preparation of plant-based coagulant.
Using Solid Waste as A Substitute for Raw Materials in Construction: A Review.
Association of Arab Universities Journal of Engineering Sciences, 31(1), 01-7
Journal of Environmental Sciences, 2019. 81: p. 168-180
[25] Ahmed, H., et al., Evaluation of different natural waste materials as bio-coagulants for domestic wastewater treatment.

The raw materials of the alkali-activated cementing materials (commonly known as MPB) is burnt magnesia borax, ammonium dihydrogen phosphate and borax.
Fire Safety Journal, 2006, 41(7):547-557
Composites Part A: Applied Science and Manufacturing. 2006, 37(8):1151-1160
Consolidation of mineral powders by the geopolymer binder technique for materials use [J].
Journal of the Mining and Materials Processing Institute of Japan, 1998, 114(7):497~500

Journal of Materials Science: Materials in Electronics, 1-13
Journal of Materials Science: Materials in Electronics, 30(23), 20673-20686
Solid state sciences, 14(10), 1520-1524
Journal of Materials Science: Materials in Electronics, 30(8), 7514-7523
Advanced materials, 2(3), 132-138

In modern materials science, a new type of refractory compounds is of great interest.
These materials were MAX-phases.
Wu, Preparation of Ti3AlC2 and Ti2AlC by self-propagating high-temperature synthesis, Journal of Materials Science Letters. 20 (2001) 1971-1973
Bhaduri, Microwave activated combustion synthesis of titanium aluminides, Materials Science and Engineering: A. 394 (1-2) (2005) 385-392
Gradoboev, Stimulation of processes of self-propagating high temperature synthesis in system Ti + Al at low temperatures by influence of γ-quanta, IOP Conference Series: Materials Science and Engineering. 327 (2018) 032051