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Nowdays, the traditional elasticity method used to evaluate the seismic safety of high arch dams is unable to reflect the dynamic performance of concrete materials and nonlinear response under earthquake load, such as the generation and development of micro cracks, the damage development in dams and the rate-dependent behavior of dam concrete.
Damage Plasticity Model Dam concrete is a damage sensitive material.
Under external load, there is the generation and development of micro cracks in concrete material, and this will apparently decrease the strength and elastic modulus of concrete, the material characteristics is called damage softening effect.
References [1] DU Rongqiang, LIN Gao, HU Zhiqiang: Safety assessment of concrete gravity dams based on dynamic, Journal of Hydraulic Engneering,Vol.37(2006), p.1055-1062 [2] Liao Zhenpeng, Huang Kongliang, Yang Baipo et al: Transmitting boundary to transient wave,Science in China(Series A), Vol.26(1984), p. 50-56 [3] Deeks A J, Randolph M F.Axisymmetric time-domain transmitting boundaries, Journal of Engineering Mechanics, Vol.120(1994), p. 25-42 [4] Li Tongchun, Li Miao, Wen Zhaowang.Application of locally incompatible meshes to stress analysis of high arch dams, Journal of Hohai University (Natural Sciences ),Vol.31(2003), p. 42-45 [5] NIU Zhiguo, LI Tongchun, WANG Yali.
Synthesis of simulated earthquake waves based on hydraulic design response spectrum,Journal of Hehai University (Natural Sciences ),Vol.35(2006),p. 262-265

Materials and Methods 1.1.
Materials 1.1.1.
[4] Lucas, A., Ancient Egyptian materials and industries, Kessinger Publishing, Third Edition, (2003)
A., Shaw, I., Stone, in Ancient Egyptian materials and technology (Paul T.
[19] Torraca, G., Lectures on materials science for architectural conservation, The Getty Conservation Institute, U.S.A, (2009)

There are new materials and processing methods [1].
Galkina, N. (2015) Study of Rheological Properties of Materials at the Blade Processing on Example of Milling Nickel-Chromium Alloy 10H11N23T3 MR VD, Applied Mechanics and Materials, vol. 756 (2015) pp 120-125 [3] Komissarov V.
I., investigation of the machinability of titanium and heat-resistant materials in face milling.
Ai, “The assessment of cutting temperature measurements in high-speed machining”, in Materials Science Forum, 2004
Kondratiev, A. (2014) Methodology of rheological material properties phenomenological modeling at high speed cutting by reverse analysis, Research Journal of Applied Sciences 9(11):753-760 http://medwelljournals.com/abstract/?

Carbon nanotubes are the strongest and stiffest materials to be discovered in terms of tensile strength and elastic modulus [10-12].
Hence the total weight of nano materials in this specimen is 2grams with each 1gram of CNT and graphene.
Turning operations were carried out on two samples, namely pure copper and hybrid composite copper with 0.4% wt of nano materials.
Manikanda Prabu, A study on characteristics of parameters influencing internal grinding process with MRR, Indian Journal of Science and Technology, 9(37), (2016), 01-07
Manikanda Prabu, Study and analysis of thermal energy storage system using phase change materials (PCM), International Journal of Applied Engineering Research, 10(62), (2015), 118- 122

Model making uses similar materials.
Conclusion Select the appropriate physical model materials of hard brittle rock with rock burst proneness, produce a physical model of underground caverns and conduct plane strain physical model tests.
International Journal of Rock Mechanics and Mining Sciences，2003，40(5)：609–631
Chinese Journal of Rock Mechanics and Engineering，2003，22(9)：1430–1436.
Advance in Earth Sciences, 2004, 19 (3) : 451-456.

Research on Experiment and Technique of Material Identification for Debris of Engineering Equipment based on Computer Vision Qunzhang Tu 1, a, Ming Pan1, b, Jianxun Zhao1, c, Dazhen Su1, a and GuoTao Wang1, c 1 Engineering Institute of Engineering Corps, PLA University of Science and Technology, Nanjing, Jiangsu, 210007, China atqzlhnj@126.com, bpanlvnn@gmail.com, csxzjxstudent@163.com Keywords: Image Processing, Support Vector Machine, Material Identification.
The materials and types of debris can be fast identified after the model is trained and the identification accuracy is high, thus a new method for fault diagnosis of engineering equipment is provided.
The sensitive characteristic parameters for material division should be chosen in the process of material identification.
The accuracy rate of classification is the most direct index for the evaluation of material identification method.
References [1] Zuo HF: The Engine Wear Condition Monitoring and Fault Diagnose Technique (Aviation Industry Press, Beijing 1995).In Chinese [2] Tu QZ, Zuo HF et.al: Journal of Nanjing University of Aeronautics and Astronautics vol. 10(2003), p. 506-509.

Because of their poor quality, the performance of PSL made from these waste veneer residues usually disqualified as structural materials [2].
Materials and method Materials.Poplar veneer strands were obtained from local plywood plant in Nanjing.
Flexural toughness index (ID ) is a parameter that reflect response of different materials to the flexural load, it is calculated as the ratio of Wp to Wi.
[3] Yixin Zhu, Mingjie Guan, Yukai Fan, Prestressing effects of twisted bamboo bundle on the wood-bamboo laminated veneer lumber, Journal of Nanjing Forestry University (Natural Sciences Edition).6(2007)16-20
[8] Zehui Jiang, Ge Wang, Benhua Fei, The Research and development on bamboo/wood composite materials, Forest Research.6(2002)712-718

The shelf life of food can be increased by coating barrier materials on plastic films.
Min: Diffusion coefficient of orange juice flavor compounds into packaging Materials, Vol.40 (2007), p. 157–163
Raheem: Application of plastics and paper as food packaging materials, J.
Siddiqi, S.; Naz, S.; Ahmed, S.A.; Sayeed: International Journal of Food Science & Technology, (2011), vol.46, p.250-256
Kochhar: Active packaging in food industry, Journal of Environmental Science, Toxicology and food Tech., p. 2319-2399.

Email: talwarsamy@gmail.com Keywords: Composite materials; drilling processes;Grey relational analysis Optimization Abstract Machining of composite materials is an important and current topic in modern researches on manufacturing processes.
As a consequence of the widening range of applications of MMC, the machining of these materials has become a very important subject for research.
The particles used in the MMCs are harder than most of the cutting tool materials.
[2] Teti, R., “Machining of composites materials,” Annals of CIRP,Vol. 51, No. 2, (2002) pp. 611-634
Mahapatra., “A Grey-Based Taguchi Approach for Characterization of Erosive Wear Phenomenon of Glass–Polyester Fly Ash Filled Composites” Journal of Polym Environ, Springer Science, Vol.18, (2010) pp 177-187

With the addition of nanometer inorganic particles into polysaccharides, the new composite materials will exhibit unexpected properties, which greatly differ from that of conventional materials [6-8].
Experimental Materials and reagents.
The study of mechanical properties is primary for determining the performance of materials, especially that of films materials.
Journal of Anhui University Natural Science Edition (In Chinese) Vol. 26 (2002), p. 71 [16] Chen H S, Sun.
Journal of Materials Science Letters Vol. 21 (2002), p. 1637