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China 2 State Key Laboratory of Die Technology, HuaZhong University of Science and Technology, Wuhan, 430074, P.R.
The mechanical model of the semi-solid materials was treated as that of the continuous porous materials in the high solid volume fraction.
Theoretical method of upper bound analysis of plastic forming process for semi-solid material The derivation of the upper bound theory for semi-solid metals presented in this paper is based on a general solution for solid materials.
Acknowledgement This research was supported jointly by grant # 0350005 from JiangXi province natural science fund and grant #04-8 from State Key Laboratory fund of Plastic Forming Simulation and Die Technology at HuaZhong University of Science and Technology.
References [1] Spencer D B, Mehrabia R, Flemings M C.: "Rheological behavior of Sn-15Pb in the crystallization range", Metallurgical Transactions, Vol.3 (1972), p.1925-1932 [2] Xie Shuisheng and Huang Shenghong, Technology and application of semisolid forming, (Metallurgical Industry Press, 1999) [3] Luo Shou-jing and Tian wentong: "Research development of semi-solid metal plastic working mechanics", Journal of harbin institute of technology, Vol.32, No.5 (2000), p.78-80 [4] Yan Hong, Xei Ju-chen, Hu Guo-an, et al: "Mechanics model of plastic forming of semi-solid metal", The Chinese Journal of Nonferrous Metals, Vol.12 (S2) (2002), p.136-139 [5] Wang Ping, Lu Guimin, Cui Jianzhong: "Upper Bound Solution of Thixoforming Force of A356", Chinese Journal of Applied Mechanics, Vol.19, No.3 (2002), p.140-143

Turning Test and Simulation of Difficult to Cut Materials 300M in Aviation Zhang Huiping1,a, Lai Yinan 1,b*, Wang Chongxun 1,c, Du Xu1,d 1College of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080, China a zhping302@163.com, blaiyinan@126.com, c 64744591@qq.com, d1090348602@qq.com Keywords: difficult-to-cut materials; cutting force; linear regression Model; finite element analysis Abstract: Turning process properties of difficult-to-cut materials used in aeronautics are often associated with the machining accuracy and surface quality of aerospace structural parts.
L. and Quan,H .S ., “The Development of Structural Materials of Advanced Aircraft”, Journal of Materials Engineering, Vol. 4,pp.4-11
[3] Lee,E.H,Sha_er,B.W., “The theory of plasticity applied to a problem of machining”, ASME Journal Applied Mechanics, Vol. 18,pp.405-413
[4] Oxley,P.L.B, “Allowing for end cutting edge effects in predicting forces in bar turning with oblique machining conditions”, Journal Title, Proc Inst MechEng, Vol.
,Jain, A. and Altan,T., “A finite element of orthogonal machining using different tool edge geometries”, Journal of Materials Processing , Vol. 146, pp.72-81

A Modified Monte-Carlo Method (MMCM) in which phonon bundles take non-energy is developed to model the steady state phonon radiative transfer in nanoscale materials.
The results indicate that the developed method has a good accuracy in solving the phonon radiative transfer in nanoscale materials.
A square of side () geometry for silicon materials is considered.
Temperature distributions in square of geometry for silicon materials Figure 4.
Cha: Computational Materials Science.

Comprehensive research and outlook of loose solid materials on the gully system under hydrodynamic conditions Shun Yang1, 3, a, Guoqiang Ou1, 2, *, Xianjun Ji1, 3, b, Jun Wang1, 3, c 1Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 2Key Laboratory of Mountain Hazards and Earth Surface Process, CAS, Chengdu 3Graduate University of Chinese Academy of Sciences, Beijing ayangshun09@126.com, b jifeng988@163.com, c junwang.paul@gmail.com *Corresponding author: ougq@imde.ac.cn Keywords: Hydrodynamic conditions, solid materials, flume experiments, prospects.
The paper reviewed the research and progress of solid materials on the gully system in the world and pointed out the shortage of it.
Research of Solid Materials under Hydrodynamic Effects Abundant of solid loose materials, enough water and steepen terrain condition constitute the three requirements of debris flow formation.
T.Takahashi: Journal of the Hydraulics Division, Vol.104(8),1978,p.1153-1169 [39].
Jon.J.Major: The Journal of Geology.

Experimental Materials Chitosan (>90%, Zhejiang Golden-shell Biochemical Co., Ltd.
Results and Discussion Performance comparison of different materials on the adsorption of Cu2+ Table 1 shows the Al-CTS composite, chitosan, Al2O3 and Al+CTS mixed materials, four kinds of materials at room temperature, the adsorption properties of Cu2+ solution whose concentration is 2.5×10-3mol·L-1.
Journal of Applied Polymer Science, 2002, 84, 1185-1192
Journal of Haz-ardous Materials, 2002, 90(1): 77-95
Journal of Applied Poly- mer Science, 2002, 84(6): 1185-1192.

Acknowledgements The research for this project was supported by the National Natural Science Foundation of China, for the Study on the Standard Test Method of Materials and Masonry Based on Raw-soil (51478043).
J China Civil Engineering Journal, 48:81-87
Journal of Materials in Civil Engineering. 24(6):775–782 [14] MEHTA P K，MONTEIRO P J M.Concrete microstructure properties and materials.Third Edition,2005:49-50 [15] Joshua B.
J.USA:Journal of Materials in Civil Engineering.(2):85-87
Lu, Yi-hong.Wang, et al.Experimental Strength of Earth-Based Construction Materials in Different Regions of China.J.Advances in Materials Science and Engineering.10,9.( 2019)

Floor Materials The choice of environmentally friendly materials is an important step in the path towards sustainable building.
The quality satisfaction of floor materials in location 1 improves from merely 5 % above average up to 45.1%.
Journal of Facilities, Vol. 18(1/2) (2002), p. 66-67 [2] Novick, D.
Journal of Management in Engineering.
Blackwell Science Ltd., Oxford. (1997).

Qualitative and Quantitative Architecture Characterisation of Porous Materials Dimitris Tsarouchas1,a University of Cambridge, Department of Engineering, Trumpington Street, Cambridge CB2 1PZ, UK adt335@cam.ac.uk Keywords: tomography, segmentation, thinning, deconvolution, heterogeneous materials Abstract.
A method for extracting accurate microstructural information from heterogeneous materials using micro Computed Tomography (µCT) is presented.
Schjø dt Thomsen, Bridging the length-scale gap-short fibre composite material as an example, Journal of Materials Science 41 (20) (2006) 6737-6750
Delisee, Macroscopic thermal properties of real fibrous materials: Volume averaging method and 3D image analysis, International Journal Of Heat And Mass Transfer 49 (11-12) (2006) 1958-1973
Thoma, Numerical investigations of the elastic and plastic behaviour of an opencell aluminium foam, Materials Science and Engineering A 397 (1-2) (2005) 391-399

fhwang@nwpu.edu.cn Keywords: notches, stress intensity factor, brittle materials.
The results are shown in Figure 3, as the ceramics is brittle materials the experimental data is somewhat scatter.
[2] R X Xu, T H Topper, and J C Thompson, Fatigue Fracture Engineering and Materials Structure 20(9) 1351-1361 1997
[3] J Schijive, Fatigue Fracture Engineering and Materials Structure 5 77-90,1982 [4] Y Murakami, Stress Intensity Factor Handbook, Pergamon Press,1980 [5] R A Smith and K J Miller, International Journal of Mechanical Science 19 11-22 1977
[8] P Lukas, M Klesnil, Materials Science and Engineering 34(1978)61-66

Describing Method for Information Protecting Composite Materials Liu Heng, Zeng Zhaoyang, Wu Chao Department of Camouflage and Simulation Engineerings PLA University of Science and Technology, Nanjing, Jiangsu Province, China zengzy1212@hotmail.com Keywords: microwave absorption, composite material, information protection.
Introduction Microwave absorption materials have been widely used in information protection technology, however, new materials that have higher absorption ability and lighter mass are still in urgent need for many cases, especially in defense information protecting.
Compositing technology is widely used in fabricating new microwave absorption materials[1,2], because this technology can gather advantages of different materials.
However, the relation between the properties of the composite material and the properties of the involved elementary materials is a bit blurry.
HP8722ES vector analyzer was used to measure the electric-magnetic parameters of the elementary materials.