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Dynamics Analysis of Industrial Sewing Machine Frame Based on FEA and Modal Experiment Zhang LI1,a, Chen KAI1,b and Xue-jiao WANG1,c 1School of Material & Mechanical Engineering, Beijing Technology and Business University, Beijing, China azhangli@th.btbu.edu.cn, b522244@163.com, c1216235677@qq.com Keywords: FEA, Experimental Modal Analysis, industrial sewing machine frame.
The material parameters of the industrial sewing machine frame are shown in Table 1.
Table 1 The material parameters of the industrial sewing machine frame Material Density Elasticity modulus Poisson's ratio Steel 7850kg/m3 2 x 105GPa 0.25 Bakelite 1200kg/m3 1.9 x 103GPa 0.36 The meshed finite element model of the brandreth is shown as Fig. 2 and the panel is shown as Fig. 3 Fig. 2 The finite element model of the brandreth Fig. 3 The finite element model of the panel The Results of Finite Element Modal Analysis The first four set natural frequencies of the industrial sewing machine frame are obtained, which are shown as Table 2.
LMS Experimental modal analysis of compressor vibration isolation component for food refrigerating unit[J].journal of Beijing technology and business university(natural science edition), 2010, 28(6):36-41

Acknowledgements The work is supported by National Natural Science Foundation of China (41104009), and the Open Research Fund Program of the Key Laboratory of Geospace Environment and Geodesy, Ministry of Education, China (Grant No. 11-01-04) and the Open Foundation of the Key Laboratory of Precise Engineering and Industry Surveying, National Administration of Surveying, Mapping and Geoinformation of China (Grant No.
New Non-iterative Solution of the Perspective 3-Point Problem, Journal of Computational Information Systems, v 8, n 9, 2012
Analytical Solution of Linear Intersection Based on Jacobi Algorithm and Its Comparison with Least Squares Solution, Applied Mechanics and Materials, Vols. 353-356, pp 3452-3455, 2013
New analytical approach to linear intersection and its application, Applied Mechanics and Materials, v 174-177, p 1962-1965, 2012

Starting material Resist coating Exposure Develop Etching Poly-si nanowires Fig. 1, Fabrication of poly- si nanowires using conventional photolithography.
[5] Robert Juhasz, Kai Kylmanen,Augustinas and Jan Linnros, Size-reduced silicon nanowires: Fabrication and electrical characterization, Elsevier, Material Science and Engineering ,pp 733-737, 2005
Fabrication of silicon nanowires by electron beam lithography and thermal oxidation size reduction method (2014) Advanced Materials Research, 832, pp. 415-418
Fabrication of High- Sensitivity Polycrystalline Silicon Nanowire Field Effect Transistor pH Sensor using conventional CMOS techmology.Japanese Journal of Applied Physics 50, Issue 4, (2011) pp.04DL05-04DL05-5

Amorphous magnetic materials (so-called amorphous alloys) have become the latest energy-saving materials for transformer cores, the main component of which is iron, silicon and boron [5].
The core loss characteristics of both materials are presented in Fig. 2.
Frost: Journal of Magnetism and Magnetic Materials Vol. 133 (1994) p. 617
[2] Y Yoshizawa - Materials Science Forum, vol. 307 (1999), p.51
Souflaris: Materials Science Forum, Vol. 670 (2011), pp. 535

Acknowledgements The study is supported in part by National Basic Research Program of China (No. 2012CB619503), the National High Technology Research and Development Program of China(2013AA031301), Program on Jiangsu Key Laboratory for Clad Materials (BM2014006), National Natural Science Foundation of China (No. 51101001 and 51201003) and Beijing Natural Science Foundation (2162006).
Mishra, Stress corrosion cracking susceptibility of ultrafine grained Al–Mg–Sc alloy, Materials Science and Engineering: A, 565 (2013) 80-89
Holtz, Precipitation behavior of the ß phase in Al-5083, Materials Science and Engineering: A, 527 (2010) 1089-1095
Allen, Direct visualization of β phase causing intergranular forms of corrosion in Al–Mg alloys, Materials Characterization, 80 (2013) 76-85
Wong, Locally reversing sensitization in 5xxx aluminum plate, Journal of materials engineering and performance, 21 (2012) 1025-1029

Introduction Basalt fiber (BF) is one kind of typical silicate inorganic non-metallic fiber possessing characters of pollution-free, green environmental-protection[1].In comparison with other fiber, basalt fiber has following features:Good mechanical properties: BF bears a strong tensile strength which is intermediate between carbon fiber and glass fiber, higher than polypropylene fiber and aramid fiber[2]; Excellent high-temperature resistance:strength of basalt fiber still remains above 90% by heating it over 600 ˚C[3];Raw materials are abundantly available and economical in price which is about 1/10 of carbon fiber[4].
Experimental General Situation Material Properties.
The design strength for concrete is grade C70 and the cement is made from ordinary portland cement; fine aggregate is from ordinary river sand, medium sand with 2.7 fineness modulus; while graded gravel with diameters ranging from 5 mm to 31.5 mm is used in the coarse aggregate; fly-ash is the classⅡ; water reducer with 25% of water reducing rate is from the CPA polycarboxylate-based retarded high range water reducer;Material of steel tubular is No.20 steel and the seamless steel tubular is 133 mm in diameter and 6 mm in thickness.
Table 1 C70 concrete composition Strength Water cement ratio W/C Sand ratio/% Material consumption per cubic meter of concrete/(kg/m3) Water Cement Sand Stone Water reducer Fly ash C70 0.29 40 150 429 690 1026 5.19 90 Table 2 Physical and mechanical properties of basalt fiber Type Diameter /μm Length /mm Length- diameter ratio Operating temperature/˚C Tensile strength /MPa Elastic modulus/GPa Elongation ultimate /% Proportion /kg·m-3 typeⅠ 18 24 1333:1 -267~700 4150~4800 93~110 3.1 2650 typeⅡ 15 12 800:1 typeⅢ 13 6 462:1 Table 3 Parameters of specimens Specimen number Pipe outside diameter D/mm Wall thickness T/mm Length L/mm Steel ratio α Yield stress fy/MPa Confinement coefficient ξ C70-0 133 6 400 0.208 295 0.929 C70-Ⅰ-1 133 6 400 0.208 295 0.894 C70-Ⅰ-3 133 6 400 0.208 295 0.878 C70-Ⅰ-5 133 6 400 0.208 295 0.905 C70-Ⅱ-3 133 6 400 0.208 295 0.850 C70-Ⅲ-3 133 6 400 0.208 295 0.828 Notes:①Steel ratio α = As/Ac, As -cross-sectional area of steel pipe,Ac -cross-sectional area
References [1] Zhonghua Zhao, Xiaobo Liu:Construction Technology under Low Temperature.Vol.33(2011),p.5 [2] lijun Ouyang, Bin Ding, Zhoudao Lu: Fiber Reinforced Plastics/Composites.Vol.37(2010),p.84 [3] Hailiang Wang, Chunwei Chang, Xinlei Yang: Railway Engineering.Vol.51(2011),p.24 [4] Ming Tang: Concrete.Vol.32(2010),p.76 [5] Sumei Zhang, Yuyin Wang: China Civil Engineering Journal.Vol.9(2004) ,p.1 [6] Feng He, Xuhong Zhou, Changhui Tang: Engineering Mechanics.Vol.17(2000),p.61 [7] Juan Chen, Yiyan Lu, Bin Li: Engineering Mechanics.Vol.28(2011),p.115 [8]Wenbo Gao, Xiaoguang Wang: Engineering Journal of Wuhan University.Vol.35(2002),p.70 [9]Shantong Zhong: Steel-tube concrete structure ( Hei Longjiang Science and Technology Publishing House, Ha Erbin1994 )

Secondly, the material parameters will be procured in thermoforming of connecting-rod slab by thermally simulated test.
Fig. 2 The hot forging drawing Fig. 3 Plasticity diagram of deformation and temperature The Establishment of 3D Model and Thermoforming Material Parameters The material for study in this paper is a new aluminum alloy, alloy elements are basically consists of Cu and Si and certain amount of rare earth elements.
[5] Zhang Changchun, Kong Weiyi: Agricultural Machinery Journal, 1996, 27 (2), pp:128～132
[7] Wang Bin, Yi Danqing: Journal of Central South University Vol. 40 (2009), pp: 123～128
[9] Hu Hongjun, Yang Mingbo, Material Science and Technology, Vol. 14 (2006), pp: 293～295.

Effect of the Ce-doped TiO2 on the Photocatalysis Degradation of MB Xiaoye Fu and Xiuhong Liang * 1Institute of Power Source & Ecomaterials Science, Hebei University of Technology, Tianjin 300130, China *liangxiuhong071@163.com Key Words: TiO2, Ce-doped TiO2, photocatalyst, sol-gel method, crystal form Abstract.
Introduction: Since Fujishima and Honda [1] discover the surface of radiatived TiO2 can photodecomposition water in 1972, the representative nano-dimension semiconductor multiphase photocatalytic materials such as TiO2, WO3, CdS, ZnS, ZnO, Fe3O4 etc, have been studied extensively.
Experiment 2.1 Material preparation In the experiment, Ti(OC4H9)4, ethanol absolute, glacial acetic acid, distilled water and salpeter solution are used.
Liu: Journal of the Chinese Society, Vol. 37 (2009), p.1458-1463 [4] Y.C.
Song, et al.: Journal of Synthetic Crystals, Vol. 37(2008), p.427-430

,in:Advanced Material Research (2011), p.335-336 [2] S.
Tangjitsitcharoen, in:Advanced Materials Research199-200 (2011), 1958-1966 [4] Dr.
Ratanakuakangwan: submitted to Journal of Applied Mechanics and Materials, vol. 490-491(2014): p. 207-212 [6] Feng Jiang, Jianfeng Li, Yiming (Kevin) Rong, Jie Sun1 and Song Zhang, The 41st CIRP Conference on Manufacturing Systems (2008) [7] Prof.Dr.
Szabó, Seminar “ModerneSchleiftechnologie” Villingen-Schwenningen (D) (2000) [8] LIU Yi-jian, ZHANG Jian-ming, WANG Shu-qing:submitted toJournal of Zhejiang University SCIENCE(2005), p.1026-1029 [9] DimitriosVakondios, PanagiotisKyratsis, Suleyman Yaldiz and Aristomenis Antoniadis, Measurement 45(2012), p.1480–1488 [10] AbdallahNasri, Mihed Ben Said, WassilaBouzidSai, Emirates: submitted to Journal for Engineering Research16 (2011), p.67-78 [11] Xiaoxiao Chen, Jun Zhao, Yueen Li, Shiguo Han, Qingyuan Cao and Anhai Li, Int J AdvManuf Technol59(2012),p.885–898 [12] Kwak JS, Int J Machine Tools Manuf(2005), p.327–334 [13] Kincl M, Turk S. andVrecer F, Int J Pharm(2005), p.39–49 [14] Gunaraj V. andMurugan N.

For example, nano-FexOy can be prepared, using some iron compounds (such as ferric citrate, iron oxalate, etc.) as raw materials by burning [2].
Yan Xin and co-works [3] have successfully used ferric citrate as raw material in the 400 ℃ - 600 ℃ for 3-5 hours to prepared γ-Fe2O3 and α-Fe2O3 with the diameter of more than 10 nm.
Experimental Experiment principle Organometallic compounds have been widely used as the precursor of metal organic chemical vapor deposition (MOCVD) method in the preparation of the nano-thin film materials because they have low melting point, are always volatile and easy to decompose and soluble in organic solvents.
Journal of Thermal Analysis and Calorimetry, 2003, 74 (2): 485~490
Journal of the Ceramic Society of Japan 104(1214), 949-952, 1996-10-01