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Experimental Study on Damping Characteristics of Piezoceramic Materials Shunted by Passive Electrical Circuits Shaoze Yan 1, Fuxing Zhang 1 and Yangmin Li2 1 Dept.
Piezoelectric materials have an ability to efficiently transform mechanical energy to electric energy and vice versa, which makes them useful as structural dampers.
The principle of piezoelectric shunt is that piezoelectric materials can convert mechanical energy into electrical energy, and the electrical energy can be dissipated through a connected load resistance.
Acknowledgements Sponsored by the National Natural Science Foundation of China under grant no. 59905016.
Hagood and A. von Flotow: Journal of Sound and Vibration Vol.146 (1991), p.243

FDM is an additive manufacturing process that uses production-grade thermoplastic materials to produce both prototypes and end-use products.
Laser Additive Manufacturing of High-Performance Materials.
New York Dordrecht London: Springer Science & Business Media
Journal of Manufacturing Science and Engineering [14] Yuan Jin, Y.
Journal of Manufacturing Systems 44, 65–78

Diatomite is a kind of non-metallic minerals, have properties as the filler, such as good stability, acid resistance, heat resistance, small density, small bulk density, absorption, dispersion and wear resistance [5], In recent years, it was applied widely in acoustic materials, building materials, coatings, insulation materials and other industries [6-8].
Acknowledgements Key Laboratory fund project of wood material science and Engineering of Jilin Province-Research on diatomite modified PP wood plastic composites.
Wood plastic composites: current trends in materials and processing [J].
Properties of heat-insulating materials [J].
Composites Science and Technology, 2004, 64: 693-700 [14] S.Y.

The high temperature is also known to significantly affect the weathering process of polymer materials [11-13].
Merah, "Natural Weathering Effects on Some Properties of CPVC Pipe Material", Elsevier’s Journal of Materials Processing Technology, Vol. 191/1-3, 198-201, 2007
Torikai, “Effects of Increased Solar Ultraviolet Radiation on Materials”, Journal of Photochemistry and Photobiology B: Biology, Vol. 46, 96-103, 1998
Materials and Structures, Vol. 22, 170-175, 1989
E.Gebril, "Effect of Weathering on Some Properties of Polyvinyl Chloride/lignin Blends," Materials Letters, Vol. 46, 332-342, 2000

Influence of Aging on Microstructure and Mechanical Properties of Wrought Magnesium Alloys Yong Xue 1, a, Zhimin Zhang 1, b, Lihui Lang 2, c, Hui Yang 1, d 1 North University of China, School of Material Science and Engineering, 030051 Taiyuan, China 2 Beihang University, School of Mechanical Engineering and Automation, 100191 Beijing, China amerryjukii@hotmail.com, bzhangzhimini@nuc.edu.cn, cforge54@163.com, dping8191@sohu.com Keywords: aging, microstructure, mechanical properties, AZ80 magnesium alloy, ZK60 magnesium alloy Abstract.
Experimental materials and methods Mg-8.9wt%Al-0.53wt%Zn alloy and Mg-(5.0-6.0) wt%Zn-(0.3-0.9) wt%Zr alloy ingots with an outer diameter of 300mm are adopted as the materials for experiment.
Firstly, intercept along the axial direction from the ingot a piece of slab with a thickness of 15mm as sample material.
Acknowledgements The present research is sponsored by National Natural Foundation of China (No.50735005, No.50605059), Shanxi Provincial Science Foundation for Youths of China (No.2007021026), and Development for Science and Technology in Higher Educational Institutes (No. 20081027).
References [1] B.L.Mordike, T.Ebert: Materials Science and Engineering, Vol.A302 (2001), p.37 [2] E.Aghion, B.Bronfin: Materials Science Forum, Vol.350-351 (2000), p.19 [3] I.M.Baghni, Y.S.Wu, and J.Q.Li et al.: The Chinese Transactions of Nonferrous Metals Society, Vol.13 (2003), p.1253 [4] T.Mukai, M.Yamanoi, and H.Watanabe et al.: Scripta Materialia, Vol.45 (2001), p.89 [5] H.Somekawa, T.Mukai: Scripta Materialia, Vol.54 (2006), p.633 [6] P.W.Song, X.T.Jing, X.F.Guo: The Chinese Journal of Nonferrous Metals, Vol.17 (2007), p.111 [7] N.Balasubramani, A.Srinivasan, S.Pillaiut: Materials Science and Engineering A, Vol.457 (2007), p.275 [8] J.Wang, J.Meng, and D.P.Zhang et al.: Materials Science and Engineering A, Vol.456 (2007), p.78 G.Y.Yuan, [9] Y.S.Sun, and X.Q.Zeng et al.: The Chinese Journal of Shanghai Jiaotong University, Vol.35 (2001), p.451 [10] J.M.Zhang, B.L.Jiang, Z.H.Wang: The Chinese Journal of Hot Working Technology, Vol.35 (2006), p.65 [11] S.Celotto: Acta Metal

But for parts with less stress, their materials should be decreased moderately, thus, making more effective usage of them.
Applied Mechanics and Materials Vols. 457-458 (2014) pp 585-588
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Analysis of bearing capacity of steel-high strength concrete composite beams Liangli Xiao, Mingyang Pan, Jian wei Han 1Wuhan University of Science and Technology,wuhan 430070,china. 2School of civil Engineering and Architecture,Wuhan University of science and Technology,wuhan 430070,china. 3School of civil Engineering and Architecture,Wuhan University of science and Technology,wuhan 430070,china.
The two materials together according to the form of composite beam can avoid the disadvantages of them and give full play to the advantages of two kinds of materials, forming the structure of high strength, high stiffness, good ductility.
Flange and web of equal thickness, the flange thickness of 0.01m, web thickness is 0.02m.In this paper three kinds of steel with the same section area, their proportion were 28.3.Materials using linear element.
The other is according to the material selection and specification level experience, strength and other indicators.
[2]Ruizs．E．Reliability Associated with Safety Factors of ACll31-89 and Mexico City concrete Design Regulations, ACI structural Journal, 990, NO．3, 1993 [3]Amadio C, Fragiacomo M．Simplified approach to evaluate creep and shrinkage effects in steel-concrete composite beams．Journal of Structual Engineering, 1997．123(9)：1153-1162

The annealing temperature had a very big influence on the transmittance, and the average transmittance was about 80%. 1 Introduction Transparent conductive oxide (TCO) films such Indium tin oxide (ITO), Fluorine-doped tin oxide (FTO), Cadmium tetroxide (CTO), have been widely applied in transparent electrodes of solar cells, amorphous silicon, liquid crystal display materials and optoelectronic information materials because of their high visible transmittance and low electrical resistivity,recent years[1].
Doped zinc oxide (ZnO) thin films has attracted more and more attention due to the abundance of raw material,its low production cost, nontoxic feature, high stability against by hydrogen plasma, outstanding high transparent and low resistivity properties compared to the ITO, FTO and CTO thin films.
Acknowledgements The work was financially supported by The Guangdong Province and Ministry of Education of China(No.2008A090400011); The Guangdong-Hong Kong Technology Cooperation Funding Project (No.2008A011800005, No.2009205115,No.20090101-4); The Natural Science Foundation of Guangdong Province (No.06025195, No.9151027501000076); The Funding Project of Shenzhen Hong Kong Innovation Circle( No.ZYB200907080105A).
References [1] LIN Ying-bin, WU Li-ping, LIN Luan:Journal of Fujian Normal University (Natural Science Edition), 2009, 5, Vol.25, No.3,P.58 [2] ZHAO Yong, YU Jin, YU Peng:Journal of Nanchang University(Natural Science), Vol.35, No.3 Jun.2011, P.258 [3] XIE Quntiao, MAO Shiping, XUE Shoudi:PIEZOELECTRICS & ACOUSTOOPTICS, Vol.33, No.2.
Appl.2011, P.299 [4] Z Q Xu, H Deng, Y Li:Materials science in semiconductor processing, Sep.2006, P.132 [5] SHI Jun-dai, YANG Huidong, HUANG BO:Science Technology and Engineering, Vol.11, No.6, 2, 2011,P.1192 [6] XU Ji-wen, WANG Hua, REN Ming-fang and CHENG Jun:Journal of Materials Science & Engineering, Vol.109, Oct.2007,P.764

Sn-Bi system is one of the most promising candidates as the lead-free solder materials.
There are several candidates for lead-free solder materials, including Sn-Ag-Cu, Sn-Bi, Sn-Zn, Sn-Zn-Bi etc. [2-4].
Stafford, J. of Electronic Materials, Vol. 37, 2007, pp. 490-497
Ivey, Journal of Materials Science: Materials in Electronics, Vol. 19, 2008, pp. 553-562
Hu, Journal of The Electrochemical Society, Vol. 158, 2011, pp.

Acknowledgment This research was supported by the Natural Science Foundation of China (NSFC).
AEl-baradie, “Tool-life prediction model by design of experiments for turning high strength steel(290 BHN),” Journal of Materials Processing Technology, Vol.77, 1998, pp.319-326
Shirakashi, “A method of recognizing tool-wear states based on a fast algorithm of wavelet transform,” Journal of Materials Processing Technology, Vol.170, 2005, pp.374-380
Sornakumar, “The effect of tool wear on tool life of alumina-based ceramic cutting tools while machining hardened martensitic stainless steel,” Journal of Materials Processing Technology, Vol.173, 2006, pp.151-156
Liang, “Modeling of cutting forces under hard turing conditons considering tool wear effect,” Journal of Manufacturing Science and Engineering, Vol.127, May, 2005, pp.262-270