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Parametric Studies on Effect of Trailing Liquid Nitrogen Heat Sink on TIG Welding of Steels R S Sudheesha, N Siva Prasadb Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai, India arssudh@gmail.com, b siva@iitm.ac.in Keywords: Welding, Residual Stress, Trailing heat sink, Finite element method (FEM) Abstract: Welding is an efficient material joining process.
Temperature dependent material properties such as thermal conductivity, specific heat, Young’s modulus, yield strength are used for analysis.
Acknowledgements This work is financially supported by Department of Science and Technology, Government of India.
[2] M.M.Mahapatra, G.L.Dutta, B.Pradhan and N.R.Mandal: Three-dimensional finite element analysis to predict the effects of SAW process parameters on temperature distribution and angular distortions in single-pass butt joints with top and bottom reinforcements, International journal of Pressure Vessels and Piping, Vol.83(2006), pp.721-729
C.Sun: Studies on characteristics of temperature field on GTAW with a trailing heat sink for titanium sheet, Journal of Materials Processing Technology, Vol. 147 (2004), pp. 328-355

The test materials were melted by a 25kg vacuum medium frequency induction furnace.
References [1] Wei Zhang, Jianhua Yao, Wei Peng, Chenhui Dong and Xiaodan Tang: Chinese Journal of Lasers, Vol. 35 (2008), p. 1830 (in Chinese)
[6] Liping Zhao, Jinfei Wang, Yonglin Ma and Baoping Xue: Journal of Inner Mongolia University of Science and Technology, Vol. 28 (2009), p. 32 (in Chinese)

., considering formula (7), Inference: 0+=1, which expresses the whole process from emerging to perishing. 1 only expresses process, not represent material number
Inference: -0=1, which expresses the whole process from emerging to perishing. 1 only expresses process, not represent material number. (2) and (3) only reflect the result from to .And we also get 0-∞=-1 (4) 　Prove： ，then (5) (6)　Prove: (7) or (8) or The application of in probability theory after is so defined in this paper.
Journal of Guilin Institute of Technology.
Science Of Surveying And Mapping[J].
Journal of Guilin Institute of Technology.21 (2001),p.131-135.

Design of Tools Flow Based on Reusable Scheduling in FMS Peiying Bian Xi’an University of Arts and Science, Xi’an, Shaanxi, 710065, China banry3@163.com Keywords: Flexible Manufacturing System (FMS), Tools Flow, Tools scheduling, Reusable Scheduling, Simulation Abstract.
Introduction As a rule, Flexible Manufacturing System（FMS）consist of a set of NC machine, material storage and transportation system and information control system.
It includes machining flow, material flow, and information flow, the machine flows are build for working flow and tools flow.
Journal of System Simulation, 2003, (9) : 1211～1213 [2] Korbaa O, et al.
International Journal of Flexible Manufacturing Systems , 2002, 14: 177～191 [3] Bian Peiying, Li Dexin et al.

These stiffness-parameters of elastic element are corresponding to the control device performance greatly, and material and processing errors will affect the stiffness greatly, so the production is guaranteed by means of measuring the stiffness index.
Mechanical Model Slotted bore force analysis is shown as Fig. 2: Fig. 2 Slotted bore stress analysis Hypothesis and Symbols Explanation. (1) Fixture material is uniformly and no defect. (2) The loading force F is equal on both sides of the measuring rod. (3) are positive (shear) stress component of Polar coordinates. (4) are positive (shear) strain of Polar coordinates. (5) are displacement component of Polar coordinates. (6) is elastic modulus, shear modulus, Poisson's ratio, bending rigidity, Length and cross-sectional area, constant.
Shao: Journal of Shanghai University, Vol. 3 (2004) No. 8, pp.231-234
Wang: Chinese Journal of Science Instrument, Vol. 28 (2007) No. 1, pp.53-56

To facilitate the calculation, the strip coil will be simplified overall with the orthotropic material parameters, use the symmetry of coil shape and thermal load, and take a quarter of the longitudinal section of strip coil study[2].
Fig. 2 Finite model of the strip coil Table 1 Dimension of the strip coil Inner radius[mm] Outer radius[mm] Width[mm] Thickness[mm] Material 600 1300 1350 45 SS400 The temperature gradient of strip coil after 30s of staying in hot coil box are shown in Fig. 3 ~ Fig. 6. 1-the center of the inner surface 2-coil inner core 3-the inside corner 4-the outside corner 5-the center of the outside surface Fig. 3 The curve of observation points of strip coil temperature over time Fig. 4 The temperature gradient of the center of Fig. 5 The temperature gradient of the the Inner surface to the center of the outer surface inside corner to the coil inner core Fig. 6 The temperature gradient of coil inner core to the outside corner Fig. 3 shows the curve of observation points of strip coil temperature over time.
[2] Lan Su, Xianjin Wang and Di Tang: Journal of University of Science and Technology Beijing (1999), in Chinese
[4] Ying Zhi, Xianghua Liu and Xiaoguang Zhou: Journal of Iron and Steel Research (2009), in Chinese

As we know, large numbers of geo-materials are nonlinear and non-homogeneity, so it’s particularly important in acquiring accurate test dates.
Acknowledgements National Natural Science Fund Projects (No. 51008110) References [1] J.
Dong, Journal of Vibration and Shock. 3 (2006) 29-34
Chen, Northwestern Seismological Journal, 1 (2009) 8-14.

As the boehmite nano-materials and the polymer bond, the AlOOH of boehmite exists in the form of chemical bonds, which ensures the transmission property of the polymer matrix.
Few literatures on the composite materials prepared with simple solution blending method of inorganic nano-phase having good dispersion in the organic phase are reported.
Acknowledgements The work was financed by the Guangxi Provincial Natural Sciences Foundation (0640041).
Liao, et al..: Materials Transactions Vol. 49 (2008), p.1741
Zhou, et al..: Journal of the Chinese Ceramic Society Vol. 37 (2009), p.1288.

Study of Microstructure and Texture Evolution using In-situ EBSD Investigations and SE Imaging in SEM Hans Bjerkaas1,a , Snorre Kjørstad Fjeldbo 1,b , Hans Jørgen Roven 1,c , Jarle Hjelen 1,d , Rémi Chiron 2,e and Trond Furu 3,f 1 Department of Materials Science and Engineering, Norwegian University of Science and Technology, N-7491 Trondheim, Norway 2 CNRS - PMTM laboratory, 93430 Villetaneuse, France 3 Hydro Aluminium R&D Materials Technology, N-6600 Sunndalsøra, Norway a Hans.Bjerkaas@material.ntnu.no, b fjeldbo@ntnu.no, cHans.J.Roven@material.ntnu.no, d Jarle.Hjelen@material.ntnu.no, e Remi.Chiron@galilee.univ-paris13.fr, fTrond.Furu@hydro.com Keywords: In-situ, EBSD, Grain rotation, Slip Activity Abstract.
The in-situ tensile machine attached to the specimen stage was developed at University Paris 13 - Institute Galilée [1] and further modified at the Norwegian University of Science and Technology.
Plasticity Vol. 21 (2005) p. 589 [6] Han J.H., Jee K.K., Oh K.H.: Journal of Mech.
Science Vol. 45 (2003) p. 1613 [7] Poulsen H.F., Margulies L., Schmidt S., Winther G.: Acta Mater.
Vol. 51 (2003) p. 3821 [8] Taylor G.I.: Journal of the Institute of Metals.

Locating Point of Impact on an Anisotropic Cylindrical Surface using Acoustic Beamforming Technique Hayato Nakatani1,a, Talieh Hajzargarbashi2,b, Kaita Ito3,c, Tribikram Kundu2,d and Nobuo Takeda4,e 1 Faculty of Science and Technology, Tokyo University of Science, Noda, Chiba 278-8510, Japan 2 Dept. of Civil Engineering & Engineering Mechanics, University of Arizona, Tucson, AZ, USA 85721 3 Dept. of Materials Engineering, The University of Tokyo, Tokyo 113-8656, Japan 4 Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 244-8561, Japan ahayatonakatani@rs.tus.ac.jp, btalieh@email.arizona.edu, cito@rme.mm.t.u-tokyo.ac.jp dtkundu@email.arizona.edu, etakeda@smart.k.u-tokyo.ac.jp Keywords: Impact, guided wave, beamforming, cylindrical surface, composite, optimization Abstract.
Introduction Detecting the point of impact on an anisotropic plate is of great importance because composite materials such as carbon fiber reinforced composite laminates having anisotropic properties, may be seriously damaged by impact even when there are barely visible surface damages.
Impact localization is required for health monitoring of structural systems especially those used in aviation fields where composite materials are being used in primary structures.
Grosse, Beamforming array techniques for acoustic emission monitoring of large concrete structures, Journal of Sound and Vibration 329 (2010) 2384-2394
Enoki, Acquisition and Analysis of Continuous Acoustic Emission Waveform for Classification of Damage Sources in Ceramic Fiber Mat, Materials Transactions 48 (2007) 1221-1226.