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Introduction To analyze acoustic field is crucial to manufacture the ultrasonic NDT testing process, especially for the materials with complicated structures.
Recently, the ANSYS was utilized to simulate the propagation process for longitudinal wave in the materials, which has the merit of providing the image of acoustic field at any time.
Numerical simulation Assuming that the selected part inside the material is isotropic, workpiece material is steel, and its mechanical properties [6] are shown in Table 1 below.
References [1] SUN Ji-hua, LI Shu-guang,LI Shu-bang,etc.Finite Element Simulation to the Change of Ultrasonic Spectral Feature in Ultrasonic Testing[J].Journal of Shihezi University(Natural Science),2008, 26(1):101-105
The realization method of viscoelastic artificial boundary and input ground motions in general finite element software[J].Journal of Disaster Prevention and Mitigation Engineering.Vol.27,Suppl,Apr.2007.

The distance between the fixed target and the substrate materials was 60mm.
SiOx coating was stretched with elastic deformation and material yielding.
Owing to thin film molecular orientation, rearrangement, slip along the direction of external force, material yielded which meant the destruction of the original configuration.
[2] Liu Zhuang, Lin Jing, Sun Zhihui etc: Chinese Journal of Vacuum Science and Technology, May, vol. 29(2009).S1, p.94-97
[4] Zhang Junfeng, Chen Qiang, Liu Fuping etc: Chinese Journal of Vacuum Science and Technology.

In recent years, TiAlN coatings obtained by IBSD techniques were widely applied to improve the lifetime and performance of a wide variety of tool materials for their attractive properties such as high hardness, good wear and chemical stability [7].
Acknowledgements This work was supported by Natural Science Foundation of Shandong Province (Y2008F27) and Jinan Municipal Science & Technology Star Plan (20080101).
References [1] Joong-Ho Shin, Ho-Eop Yoon and Yuhua Zhang: International Journal of the Korean Society of Precision Engineering, Vol.3(2002), p50 [2] Giorgio Figliolini, Pierluigi Rea and Jorge Angeles: Mechanism and Machine Theory, Vol.41(2006), p1320 [3] Eing-Jer Wei, Hsin-Yi Lai and Chao-Kuang Chen: Journal of Materials Processing Technology, Vol. 100 (2000), p147 [4] Ronghua Wei: Surface and Coatings Technology, Vol. 203(2008), p 538 [5] C.
Miyake: J. of materials science, Vol. 35(2000), p 4193 [9] F.

Bonfield 1 1 Cambridge Centre for Medical Materials, Dept of Materials Science and Metallurgy, Cambridge University, Pembroke St, Cambridge, CB2 3QZ, United Kingdom; mqa20@cam.ac.uk 2 Bone Research Group, School of Clinical Medicine, Cambridge University, Box 157, Addenbrooke's Hospital, Cambridge CB2 2QQ, United Kingdom; dci20@mole.bio.cam.ac.uk 3 Orthopaedic Research Unit, Dept of Surgery, Cambridge University, Box 180, Addenbrooke's Hospital, Cambridge CB2 2QQ, United Kingdom Keywords: Silicon, orthosilicic acid, human osteoblasts, reverse transcriptase-polymerase chain reaction, collagen type I Abstract.
Materials and Methods Two separate experiments were carried out.
Med. 4 (1998), p1329-1333 [5] P Armitage, G Berry, Statistical Methods in Medical Research, (Blackwell Science, 1994) [6] C D Seaborn, F H Nielsen, Biological Trace Element Research 89(3): (2002), p239-250, [7] K L Tucker et al., Journal of Bone and Mineral Research 16: (2001), S510-S510 [8] R Jugdaohsingh et al., American Journal of Clinical Nutrition 75(5): (2002), p887-893 [9] M C Hott et al., Calcified Tissue International 53(3): p174-179
[10] E M Carlisle et al., Science 167 & Calc.

Mangeron, No. 59A, 700050, Iasi, Romania 2Technical University “Gheorghe Asachi” of Iasi-Romania, Department of Materials Science and Engineering, Blvd.
Mangeron, No. 59A, 700050, Iasi, Romania 3Technical University “Gheorghe Asachi” of Iasi-Romania, Department of Materials Science and Engineering, Blvd.
Mangeron, No. 59A, 700050, Iasi, Romania 6Technical University “Gheorghe Asachi” of Iasi-Romania, Department of Materials Science and Engineering, Blvd.
[6] Yong Zhang, Yunjun Zhou, Solid Solution Formation Criteria for High Entropy Alloys, Materials Science Forum 561-565, pp.1337-1339, (2007)
[10] SONG Chun-hui, GAN Zhang-hua, LU Zhi-hong et al., Preparation and Electrochemical Properties of AlMgZnSnPbCuMnNi High Entropy Alloys with Low Free Corrosion Potentials, Journal of Materials Science & Engineering 5, pp.747-752, (2011)

Management Science. 47 (2001) 1–21
Ashby, The Optimal Selection of Material and Section-shape, Journal of Engineering Design. 7(2) (1996) 129-150
Firat, Computer aided analysis and design of sheet metal forming processes: Part I – The finite element modelling concepts, Materials and Design. 28 (2007) 1298–1303
Khalina, Mehdi Jonoobi, Concept selection of car bumper beam with developed hybrid bio-composite material, Materials and Design 32 (2011) 4857–4865
Ismailb, A note on the conceptual design of polymeric composite automotive bumper system, Journal of Materials Processing Technology. 159 (2005) 145–151

Materials Science and Technology, Vol.29(4)(2013),426-438
Materials Science and Technology, Vol.30(2)(2014), 1461-1469
Journal of Materials Engineering and Performance, Vol.20 (7) (2011), 1294-1303
Materials Science and Technology, 2009, Vol.25 (1), 68-75
Babu, Optimization of weld conditions and alloy composition for welding single-crystal nickel-based superalloys, Materials Science Forum, Vol.539-543(2007), 3082 -3087.

This paper integrates the sensing technology, information science, artificial intelligence theory, computer technology and traditional structures safety monitoring theory, gives out a comprehensive system of the Tunnel engineering structure safety monitoring which integrated with the safety of the structure information extraction, comprehensive processing and analysis, structure diagnosis and safety evaluation process.
Accompanying with surrounding environment of the constantly exchange of material, energy, etc, and it has a strong "open" feature; at the same time, the system consists of many of subsystems, such as displacement and deformation, internal static loading and dynamic loading, the load change of the upper portion, the structure stress and strain, the geological environment load, ect, so the tunnel project system is both a giant and complex system[4].
[4] WANG Hao, GE Xiu-run, and DENG Jian-hu, “Study on Management System Of Monitoring Data In Tunnel Excavation,”Chinese Journal ofRockMechanics and Engineering, 2001,10,pp.1684-1686

The chloride ions in the concrete consist of the inner chloride ions which introduced by raw materials and the externally intruded chloride ions.
The negative effect of inner chloride ions can be avoided by strict control of the quality of raw materials, while the externally intruded chloride ions are inevitable[4].
Experimental procedure Materials.
Factors Affecting Diffusion of Chloride Ion in Mortar System[J].Journal of Building Materials, 2008,11（3）:328-333.
Simulation experiment and Mechanism of the combining of sea sand type chlorine ions in cement materials [J].

Influence of freezing-thawing on strength of over consolidated soil, Chinese Journal of Geotechnical Engineering, Vol.28(12), pp.2082~2087, (2006) [3] CL Chen, P Gao, ZQ Hu.
Moistening deformation characteristic of loess and its relation to structure, Chinese Journal of Rock Mechanics and Engineering, Vol.25(7), pp.1352~1361, (2006) [4] CL Chen, P Gao, J Tang.
Structure parameter of soil under complex stress conditions, Chinese Journal of Rock Mechanics and Engineering, Vol.23(24), pp.4248~4251,(2006) [6] J Deng, LM Wang, ZZ Zhang.
Microstructure characteristics and seismic subsidence of loess, Chinese Journal of Geotechnical Engineering, Vol.29(4),pp. 542~549,(2007) [7] CG Zeng, HL Liu, YD Zhou.
Effect of consolidation stress ratio on dynamic strength and dynamic pore water pressure of soil, Chinese Journal of Geotechnical Engineering, Vol.28(01), pp. 101-105,(2006).