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Discharging process; Storage tank; Phase change material; Air-Conditioning.
Acknowledgment The authors acknowledge the support provided by the Provincial Science (E200822) and the Natural Science and Harbin University of Commerce.
[4] Webb B W , Moallemi M K and Viskanta R., “Experiments of melting unfixed ice in a horizontal cylindrical capsule,” Journal of Heat Transfer, vol. 109, 1987, pp. 454-459., [5] X.
Balcon, “Phase Change Thermal Energy Storage Using Spherical Capsules: Performance of a Test Plant,” International Journal of Refrigeration, vol. 19, 1996, pp. 187–196
“Experimental Study of Contact Melting Inside Horizontal Rectangular Capsule,” Journal of Naval University of Engineering., vol. 14, 2002, pp. 1-4 [10] Xiaoyan Li., “Research on Cold-storage Characteristics of New High Temperature Phase-change Materials in Cold Storage Ball,” Energy Conservation Technology, vol. 22, 2004, pp. 9-11

Table 1 presents the major properties of both workpiece materials.
Malkin: ASME Journal of Manufacturing Science & Engineering, Vol. 123 (2001) No.1, pp.13-22
Robinson:Materials Science and Engineering, Vol. 13 (1974) , pp. 83-91
Robinson: Materials Science and Engineering, Vol. 13 (1974) , pp.93-100
Malkin,: ASME Journal of Manufacturing Science and Engineering, Vol. 121 (1999), pp. 623-631

(2) A high densification precusor can be obtained by Pure aluminum element powders as raw materials.
Guo-yin Zu, Min Zhang and Guang-chun Yao：Rare Metal Materials And EngineerinVol.37 (2008） p.485“In Chinese” 3.
Guo-yin Zu, Min Zhang and Guang-chun Yao: Journal of Functional Materials Vol.38（2007）p.859“In Chinese” 8.
Min Zhang, ChangjunChen and Guangchun Yao:Journal of Functional Materials Vol. 39(2008)p.596 “In Chinese” 9.
Min Zhang , Guo yin Zu and Guangchun Yao: The Chinese Journal of Process Engineering Vol.7 (2007)p.628 “In Chinese” 11.Min Zhang, ChangjunChen and Guangchun Yao:Rare Metal Materials And Engineering Vol.38(2009) p.119“In Chinese”

a Email: alwaysjohnie@yahoo.com Keywords: Functionally Graded Materials; Finite element-Eigenvalue method; Steady state solution Abstract: In this paper, a finite elment-eigenvalue method is formulated to solve the finite element models of time dependent temperature field problems in non-homogeneous materials such as functionally graded materials (FGMs).
Lambros: Numerical calculation of stress intensity factors in Functionally Graded Materials, International Journal of Fracture, Vol. 104 (2000), p. 131-143
Paulino: Mixed-mode crack propagation in Functionally Graded Materials, Materials Science Forum,Vol. 492-493 (2005), p. 409-414
Yan: Modeling and processing of Functionally Graded Materials for rapid prototyping, Journal of Materials Processing Technology,Vol. 146, issue 3 (March) (2004), p. 396-402
Jin: Some Notes on the Linear Viscoelasticity of Functionally Graded Materials, SAGE Journal of Mathematics and Mechanics of Solids, Vol. 11, number 2 (2006), p. 216224

Preparation and Electromagnetic Wave Absorption Properties of Core-Shell Ni/TiO2 Microspheres Biao Zhao1,2,a, Bingbing Fan2, Hao Chen1,2, Xiaoxuan Pian1,2, Binbin Wang1,2, Wen Li1,2, Bing Sun1,2, Chenyang Wang1,2, Rui Zhang1,2,* 1School of Materials Science and Engineering, Zhengzhou University, Henan, 450001, P.R.
Hu, Preparation and microwave absorption properties of Ni–Fe3O4 hollow spheres, Materials Science and Engineering: B 164 (2) (2009) 112-115
Liu, Preparation and microwave absorption properties of loose nanoscale Fe3O4spheres, Journal of Magnetism and Magnetic Materials 322(15) (2010) 2167-2171
Liu, Microwave absorption properties of Fe3O4/CuPc hybrid material with cooperative dual nonlinear dielectric/magnetic resonance, Materials Letters 69(2012) 30-33
Che, et al., Hierarchical magnetic yolk-shell microspheres with mixed barium silicate and barium titanium oxide shells for microwave absorption enhancement, Journal of Materials Chemistry 22 (18) (2012) 9277-9284

Guangzhou Building Materials Institute Co., Ltd.
Raw materials Test AAC blocks were provided by Dongguan Chuangjian New Building Materials Co., Ltd.
This is because AAC blocks are porous materials.
Journal of Xi’an University of Architechure and Technology (Natural Science Edition), 2005, 37( 2) : 2392242
Journal of Xi’an University of Architecture and Technology ( Natural Science Edit ion). 2009, 41(2), 126-130

Yen, A FEM study on mechanisms of dicontinuous chip formation in hard machining, Journal of Materials Processing Technology 155-156 (2004), pp 1350-1356 [7] J.
Shivpuri, Prediciton of chip morphology and segmentation during the machining of titanium alloys, Journal of Materials processing Technology, 150 (2004), pp 124-133 [8] R.
Hou, On thermoplastic shear instability in the machining of titanium alloy (Ti-6Al-4V), Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science 33 (9), 2002, pp 2995-3010 [9] C.Z.
Liu, Investigations of tool edge radius effect in micromachining: A FEM simulation approach, Journal of Materials Processing Technology, Vol. 195, Issues 1-3, 2008, pp 204-211 [12] G.
ASME Journal of Manufacturing Science and Engineering, (2000) Vol. 122, No. 3, pp 406-412 [18] Information on www.tatasteelnz.com [19] P.L.B.

Test Materials for Test.
It is indicated that pretorsion changes the microscopic distribution of the materials, resulting in damamge to some extent.
Mechanical Properties of Materials.
Rare Metal Materials and Engineering, 36(12): 2119-2123( 2007) [12] Huang Z G, Dong H L, Yuan Q H, et al.
Journal of University of Science and Technology Beijing, 31(8): 988-994(2009), (In Chinese)

In this experiment, materials were used silver nitrate (AgNO3) as main raw material, ethylene glycol (EG) as a solvent, small amount of sodium chloride (NaCl) as a mediated agent, while polyvinyl alcohol (PVA) as a capping agent to assist the growth of AgNRs.
Products of material science and engineering in nano-scale may be in the form as nanoparticles (NPs), nanowires (NWs), nanorods (NRs) and nanotubes (NTs).
Experimental Materials and Preparation of AgNRs: Materials used in this study consisted of silver nitrate (AgNO3, Mw. 169.87, PT.
Santamaria, Silver nanowires/polycarbonate composites for conductive films, Material Science and Engineering 40 (2012) 0122001
Xianwen, Construction of silver nanowires on dna template by an electrochemical technique, Materials & Design 28 (2) (2007) 722–725

Physical evolution of Na-geopolymer derived from metakaolin up to 1000°C.Journal of Materials Science, 42,3044-3054
Journal Membrane Science, 66-72
Romanian Journal of Materials, 42 (2), 179-186
Journal of Hazardous Materials, 748-752
Journal Applied Polymer Science, 2481-2492