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The uncertainty is mainly caused by the variability of materials, quality of construction, different environmental conditions, and so on [1-4].
Acknowledgements The work is supported by the Basic Science & Research Foundation of IEM, CEA (2013B07), International Science & Technology Cooperation Program of China (2012DFA70810), and Natural Science Foundation of China (50908216).
Katafygiotis: Journal of Engineering Mechanics, 124 (4) (1998), 455- 461
Soize: Journal of Sound and Vibration, 332 (10) (2013), 2379-2395
Beck: Journal of Engineering Mechanics, 130 (1) (2004), 16-33

Experimental Investigation on Varying Speed Control of Harmonic in Centreless Grinding Xintao Xia Mechatronical Engineering College, Henan University of Science and Technology, 48 Xiyuan Road, Luoyang 471003, China E-mail: xiaxt1957@163.com Keywords: quality control; centreless grinding system; varying speed grinding; rolling bearing; harmonic; roundness.
Acknowledgements This project was funded by the Natural Science Research Project of the Education Department of Henan Province (Grant No.2010B460008) and the Doctoral Scientific Research Initiation Fund of Henan University of Science and Technology (Grant No. 09001318).
References [1] Yuji Furukawa: Journal of Machine Tool Design and Research Vol. 11 (1971), p. 145
Vrabic: Journal of Materials Processing Technology Vol. 210 (2010) , p. 104
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Acknowledgements The authors gratefully acknowledge the financial support of Natural science Foundation in Liaoning province, Project No.201202186; References [1]COPUR H, BILGIN N, TUNCDEMIR H, BALCI C.
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As an alternative to these methods, recent proposals have emerged on the use of modern lightweight high-strength materials to reinforce reinforced concrete constructions.
The main difficulty is the different deformability of these materials.
, P Koszelnik and P Mesaros (Cham:Springer) p 195 [10] Torabian A and Mostofinejad D 2017, ACI Structural Journal 114 861-73 [11] Pham T M, Doan L V and Hadi M N S 2013 Constr.
Mater. 49 490-9 [12] Hadi M N S 2010, Australian Journal of Structural Engineering 10 169- 78 [13] Blikharskyy Z, Vashkevych R, P Vegera and Blikharskyy Y 2020 Advances in Resource-saving Technologies and Materials in Civil and Environmental Engineering in Proceedings of CEE 2019 – 2020, Lecture Notes in Civil Engineering Vol 47, ed Z Blikharskyy, P Koszelnik and P Mesaros (Cham:Springer) p 17 [14] Blikharskyy Z, Khmil R and Vegera P 2017 Shear strength of reinforced concrete beams strengthened by P.B.O. fiber mesh under loading Matec Web of Conferences 116 10.1051/matecconf/201711602006 [15] Selejdak J, Blikharskyy Y, Khmil R and Blikharskyy Z 2020 Advances in Resource-saving Technologies and Materials in Civil and Environmental Engineering in Proceedings of CEE 2019 – 2020, Lecture Notes in Civil Engineering Vol 47, ed Z Blikharskyy, P Koszelnik and P Mesaros (Cham:Springer) p 410 [16] Blikharskyy Z, Vegera P, Vashkevych R and Shnal
T 2018 Fracture toughness of RC beams on the shear, strengthening by FRCM system Matec Web of Conferences 183 10.1051/matecconf/201818302009 [17] Benzaid R and Mesbah H A 2013, Structural Engineering and Mechanics 46 111-135 [18] Blikharskyy Y, Khmil R and Blikharskyy Z 2018 Research of RC columns strengthened by carbon FRP under loading Matec Web of Conferences 174 10.1051/matecconf/201817404017 [19] Gajdosova K and Bilcik J 2013, Journal of Composites for Construction 17 239-48 [20] Olivova K and Bilcik J 2009, Slovak Journal of Civil Engineering 17 1-9 [21] Zhang Q, Mol’kov Y V, Sobko Y M, Blikhars’kyi Y Z and Khmil R E 2015, Materials Science 50 824-9

Therefore, the titanium content is controlled mainly by controlling the raw materials.
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Study on Microstructure and Mechanical Properties of Mg9AlZnGdY Magnesium Alloy after T6 in Lost Foam Casting Zhong Zhao1, a, Qiang Luo2,b and Zi Tian Fan2,c 1School of Mechanical Engineering, Ningbo University of Technology, China 315016 2 State Key Laboratory of Material Processing and Die ＆ Mould Technology, Huazhong University of Science and Technology, Wuhan, China 430074 azzsee@yahoo.cn, bluoqiang_2008@yahoo.com.cn, cfanzt@mail.hust.edu.cn Keywords: Magnesium alloy, lost foam casting (LFC), microstructure, mechanical property Abstract.
Acknowledgements This work was financially supported by the Zhejiang Natural Science Foundation (Y1110106) and the National High Technology Research and Development Program of China (2007AA03Z113).
Lin: The Chinese Journal of Nonferrous Vol. 11(2001), p. 99 In Chinese [5] I A Anyanwu, S Kamado, Y Kojima: Materials Transactions Vol. 42(2001), p. 1212 [6] X.M.Zhang, J.M.Chen, Y.L.Deng:The Chinese Journal of Nonferrous Vol. 15(2005), p. 1925 In Chinese [7] Jing G.Y.
,Li J.H.: Journal of the Chinese Rare Earth Society Vol. 25(2007), p. 610 In Chinese [8] Qiang Luo, Zhong Zhao, Qi-zhou Cai, Zi-tian Fan: Foundry, Vol.59(2010), p. 568 In Chinese [9] Q.S.

Study on Film-forming Technique of Aluminum Composite Membrane Prepared by Inorganic Precursor Sol-gel Method GUO Lin Lin 1,a , WANG Hong Min1,b , LIU Wei1,c , XU Mei1,d 1Department of Chemistry and Environmental Science, Cangzhou Normal College, Cangzhou, 061000, Hebei, China aguolinlin0613@163.com, bwhm1961@sina.cn, clw9225@sina.com, dxm308@163.com Keywords: film-forming technique, sol-gel method, inorganic precursor, composite membrane Abstract.
Table 1, Schedule of Reagent Reagent Name Molecular Formula Reagent Name Molecular Formula Aluminum Nitrate Al(NO3)3·9H2O Anhydrous Ethanol CH3CH2OH Zirconium Oxychloride ZrOCl2·8H2O Ammonia NH3·H2O Tetraethyl Orthosilicate (C2H5)4SiO4 Nitric Acid HNO3 Preparation of composite Sol with Inorganic Precursor With Al(NO3)3 as the raw material and ammonia as a catalyst, aqueous ammonia is heated to 80°C to 90 °C in water bath, and then an appropriate amount of Al(NO3)3 is added to hydrolyze, and after a certain time of reaction add nitric acid as precipitate to peptizing it.
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Model establishment and analysis of concrete dam A reservoir staunch that is shown as fig.1 is built of concrete materials.
The concrete material parameters are shown in table 1.
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The elastic modulus of the workpiece and positioning components are respectively and , Poisson's ratio are and .The static coefficient of friction for the workpiece–fixture material pair is taken to be 0.2.
Acknowledge This project was supported by National nature science founding (50975046) and shanghai leading academic discipline project (No.
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[5] QIN Guo-hua, An Optimal Method to Clamping Force DeterminationBased on the Minimum Norm Principle Journal of North University of China, Vol. 32(2011), p. 442-448

Design In our paper, copper was chosen as our metal materials, since it has low receptivity to decrease the skin effect loss at high frequency.
The authors gratefully acknowledge the assistance of Key Laboratory of Instrumentation Science & Dynamic Measurement (North University of China), Ministry of Education, National Key Laboratory for Electronic Measurement Technology.
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On-chip spiral inductors with patterned ground shields for Si-based RF IC’s [J].IEEE Journal of Solid-State Circuits, 1998, 33 (5): 743-751