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The elastic material was adopted as the rock material for the calculation.
Fig.1 The cross section of the slope Fig.2 The finite element mode of the slope Effects of Excavation Angle on Slopes Damage under the Static Condition Material damage is the gradually physical process to damage material.
[3] R.Q.Huang, W.L.Li: Chinese Journal of Rock Mechanics and Engineering.
[10] Y.L.HE, S.Y.LU:Chinese Journal of Geotechnical Engineering.
[12] L.J.TAO, S.R.SU, Z.Y.ZHANG:Journal of Engineering Geology.

Acknowledgement In this paper, the research was sponsored by the Nature Science Foundation (Project No. 11202103) and Zijin Zhi Xing Foundation of Nanjing University of Science and Technology (Project No. 2013zj-0201).
Material Science And Technology, 1996, 4(2):16-19
Ordnance Material Science And Engineering, 2010, 33(4):68-71
Journal Of North University Of China, 2009, 30(5):489-494
Chinese Journal Of Explosives And Propellants, 2008, 3(31):20-24

The authors designed the tests to make a comprehensive study considering all the factors published in the Science Direct Database during January 2004 to September 2014.
The biomass conversion efficiency relies on the usage, material, size and shape of the particles, gas flow, and types of reactors.
Progress in Energy and Combustion Science 2005, 31(2):171-192
Progress in Energy and Combustion Science 2011, 37(4):462-502
[22] Parikh J, Lior N: Energy and its sustainable development for India, Editorial Introduction and commentary to the Special Issue of Energy – The International Journal.

[3] Torru Tanaka, Kastuhiko Saito, Mitsuhiro Nishio, Qixin Guo and Hiroshi Ogawa, Journal of Material Science : Materials in Electronics, LLC (2008) [4] TRakahiro Ishizaki, Nagahiro Saito, Osamu Takai, Shuichi Asakuru, Kaori Goto and Akio Fuwa, Electrochimica Acta, 50 (2005) 3509-3516 [5] C.
Gebhardt, Journal of Crystal Growth, 138 (1994) 412 [8] R.
Science, 174 (1986) 522 [9] U.Pal, S.
Mazumdar and H.L.Das, Bullatine of Material Science, 29, 1(2006) 11-15 [11] G.I.Rusu, P.Prepilita, N.
Popa, Journal of Optoelectronics and Advanced Materials, V. 7, 2 (2006) 829-835 [12] H.

Valvular leaflets made with polymer materials of porcine or bovine pericardial can be opened or closed by ejected blood.
We assume valve leaflets material’s modulus of elasticity which is 5.4Mpa and its Poisson’s ratio is 0.48[5].
Acknowledgment This work was supported by the National Natural Science Foundation of China(NO:31170906) and the Technic Development Foundation of Shandong Province (2009GG10002082).
[4] Luo, X.Y, W.G.Li and J.Li, Geometrical Stress-Reducing Factors in Anisotropic Porcine Heart Valves, Journal of Biomechanical Engineering.Commun. 125 (2003)735-743
Martin, Smoothing Spline Curves and Surfaces forSampled Data, International Journal of Innovative Computing, Information and Control(IJICIC).

Introduction Adiabatic shear is a mechanical behavior of materials in many deformation processes, such as high speed impact, erosion-corrosion, high-energy-rate forming and high-speed cutting.
The experimental materials were machined into disc specimens with 95mm in diameter and 3.5mm in height.
Bolle and P.Chevrier, et al: Materials Science and EngineeringA Vol.452-453(2007), p.469 [5] R.F.Recht: Trans.ASME, Journal of Applied Mechanics Vol.31(1964), p.189 [6] C.L.
Lai, et al: Materials Science and Engineering A Vol.276(2000), p.250 [8] Y.B.
Chen, et al: Materials Science and Engineering A Vol.299(2001), p.287

Experimental Research of the Acoustic Emission (AE) Characteristics during the Tensile Process of the Blowout Preventer Shell Material Zhao Junru, Dai Guang, Zhang Ying (Mechanical Science and Engineering College, Northeast petroleum university, Daqing,163318, China ) Keywords: blowout preventer, AE testing, Frequency Spectrum Analysis Abstract.
Analyzed the acoustic emission characteristics in different damage phases of this material using parameter analysis and waveform analysis.
experiment specimen The experiment specimens are made of ZG25CrNiMo, which is the shell material of BOP, shown as figure 1.
Figure 6 shows the waveform and spectrum of every damage stage of the BOP shell material after wavelet de-noising.
Acoustic Emisson Monitoring of Fatigue crak Propagation [J], Journal of Consturctional Steel Research, 2003, 59(6): 659-712

With layered structures, it is possible to design the microstructural characteristics of materials, leading to increased threshold strength.
Materials were shaped by aqueous tape casting of concentrated suspensions composed of kaolin and muscovite powders.
Conclusion The study of the processing and characterization of micro-composite materials with mullite from kaolinite and muscovite mica reveals the preferential orientations of mullite in sintered materials.
Greil, Materials Science and Engineering.
[3] Emel Ozel, Semra Kurama, Journal of materials processing technology. 198 (2008) 68–72

Up to now, many materials have been reported to have the resistive switching (RS) properties, such as transition metal oxides, chalcogenide materials, polymer and organic materials, amorphous Si, and graphene derivates [3].
Therein, BiFeO3 (BFO) become one of the most important materials for RS effect due to its tunability of leakage current, which broaden its potential use in novel, multifunctional device applications [5].
Fujisaki, Japanese Journal of Applied Physics, Vol. 49 (2010), p. 100001
Szot, Advanced Materials, Vol. 21 (2009), p. 2632
Zhao, Journal of Physics D: Applied Physics, Vol. 42 (2009), p. 185010

The raw materials were tin, silver and copper powders in micron size.
Unfortunately, the Pb based materials have toxic properties and may be harmful to health and environment [1].
Additionally, powder metallurgy offers better advantage on top of ingot metallurgy in terms of quality, cost, precision, productivity as well as by its ability to conserve raw materials through a high level of material consumption [4].
Experimental Procedure The elemental materials used in this study were 99.8% trace metal basis of Sn powder (<45 µm), 99.9% metal basis of Ag powder (5-8 µm) and 99% of Cu powder (45 µm).
R., Wettability, electrical and mechanical properties of 99.3Sn-0.7Cu/Si3N4 novel lead-free nanocomposite solder, Advanced Materials Research. 277 (2011) 106-111