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Online since: October 2010
Authors: Yusaku Fujii, Kazuhito Shimada, Koichi Maru, William Thornton, Tao Jin
Mizuno, "Development of mass measurement devices for zero-gravity experiments", Applied Mechanics and Materials, (in print)
Miki, “Balance for measuring mass under microgravity conditions”, AIAA Journal, Vol.39, No.3, pp.455-457, 2001
Fujii, “Reconsideration of body mass measurement on the International Space Station and beyond”, Key Engineering Materials, Vols. 381-382, pp 461-464, 2008
Shimada, "Mass Measurement in Space, 1964-2010", Applied Mechanics and Materials, (in print)
Fujii, "Issues with body mass measurement on the International Space Station (ISS)", Applied Mechanics and Materials, (in print).
Miki, “Balance for measuring mass under microgravity conditions”, AIAA Journal, Vol.39, No.3, pp.455-457, 2001
Fujii, “Reconsideration of body mass measurement on the International Space Station and beyond”, Key Engineering Materials, Vols. 381-382, pp 461-464, 2008
Shimada, "Mass Measurement in Space, 1964-2010", Applied Mechanics and Materials, (in print)
Fujii, "Issues with body mass measurement on the International Space Station (ISS)", Applied Mechanics and Materials, (in print).
Online since: November 2011
Authors: Xiao Gang Zhu, Bin Long Lei
Study on safety assessment methods of the penstock of the High head hydropower station using the China standard GB/T 19624-2004
Xiaogang Zhu1, a, and Binlong Lei2,b
1School of Materials Science and Engineering, Southwest Jiaotong University, China, 610031
2School of Materials Science and Engineering, Southwest Jiaotong University, China, 610031
agangxiaozhu20055286@yahoo.cn, blbl-22110@163.com
Keywords: finite element analysis, ultrasonic flaw detection, planar defect, general assessment
Abstract.
Table 1 Geometrical dimension and material characteristics of penstock Inner diameter D/mm Thickness of the penstock t/mm Yang’s modulus E/MPa Poisson’s ratio ν Biggest pressure designed P max /MPa 1200 34 2.0×105 0.3 13.7 Fig.1 Finite element model of penstock Fig.2 Stress-strain curve of Q345 steel 1.2 Results and discussion According to Fig.3, Fig.4, Fig.5 and Fig.6, with the increase of the pressure, the plastic strain of the center of the pipe close becomes larger.
characterization (1)1# defect is characterized as the longitudinal semi-elliptical surface crack: 2c=18 mm,a=9 mm; (2)2# defect is characterized as the longitudinal semi-elliptical surface crack: 2c=28 mm,a=14 mm; (3)3# defect is characterized as the longitudinal semi-elliptical surface crack: 2c=30 mm,a=14 mm; (4)4# defect is characterized as the longitudinal semi-elliptical surface crack: 2c=25 mm,a=12 mm; (5)5# defect is characterized as the longitudinal elliptical internal crack: 2c=1 mm,2a=1 mm,p1=13mm [2,5]. 3.4 Stress calculation The primary film stress of the longitudinal crack in the circumferential weld joints is evaluated as =1.79=216.4Mpa.The primary film stress of the longitudinal crack in the longitudinal weld joints is evaluated as=1.3529=327Mpa.Because the thickness of the penstock is smaller, the primary bending stress is evaluated as =0.The secondary film stress is evaluated as =0.6=228MPa;The secondary bending stress is evaluated as =0[2]. 3.5 Determination of material
The fracture toughness of the material is evaluated as =.The fracture toughness of the material used as assessment is evaluated as =2273.8. 3.6 Calculation of and The andparameters are evaluated as follows [2,5]: =() (4) =() (5) Table 6 Values of and Specimen Number 1 2 3 4 5 /(N.mm-1.5) 772.3 979.2 1024 1396 262.6 /(N.mm-1.5) 813.7 1031 1079 973 183 3.7 Calculation of The parameter of the surface crack in the cylinder is evaluated as follows [2]: =() (6) (7) The parameter of the elliptical internal crack in the cylinder is evaluated as [2]: (8) Where;.
International Journal of Pressure Vessels and Piping82, 2005:787-796
Table 1 Geometrical dimension and material characteristics of penstock Inner diameter D/mm Thickness of the penstock t/mm Yang’s modulus E/MPa Poisson’s ratio ν Biggest pressure designed P max /MPa 1200 34 2.0×105 0.3 13.7 Fig.1 Finite element model of penstock Fig.2 Stress-strain curve of Q345 steel 1.2 Results and discussion According to Fig.3, Fig.4, Fig.5 and Fig.6, with the increase of the pressure, the plastic strain of the center of the pipe close becomes larger.
characterization (1)1# defect is characterized as the longitudinal semi-elliptical surface crack: 2c=18 mm,a=9 mm; (2)2# defect is characterized as the longitudinal semi-elliptical surface crack: 2c=28 mm,a=14 mm; (3)3# defect is characterized as the longitudinal semi-elliptical surface crack: 2c=30 mm,a=14 mm; (4)4# defect is characterized as the longitudinal semi-elliptical surface crack: 2c=25 mm,a=12 mm; (5)5# defect is characterized as the longitudinal elliptical internal crack: 2c=1 mm,2a=1 mm,p1=13mm [2,5]. 3.4 Stress calculation The primary film stress of the longitudinal crack in the circumferential weld joints is evaluated as =1.79=216.4Mpa.The primary film stress of the longitudinal crack in the longitudinal weld joints is evaluated as=1.3529=327Mpa.Because the thickness of the penstock is smaller, the primary bending stress is evaluated as =0.The secondary film stress is evaluated as =0.6=228MPa;The secondary bending stress is evaluated as =0[2]. 3.5 Determination of material
The fracture toughness of the material is evaluated as =.The fracture toughness of the material used as assessment is evaluated as =2273.8. 3.6 Calculation of and The andparameters are evaluated as follows [2,5]: =() (4) =() (5) Table 6 Values of and Specimen Number 1 2 3 4 5 /(N.mm-1.5) 772.3 979.2 1024 1396 262.6 /(N.mm-1.5) 813.7 1031 1079 973 183 3.7 Calculation of The parameter of the surface crack in the cylinder is evaluated as follows [2]: =() (6) (7) The parameter of the elliptical internal crack in the cylinder is evaluated as [2]: (8) Where;.
International Journal of Pressure Vessels and Piping82, 2005:787-796
Online since: May 2013
Authors: Keya Dharamvir, Charanjit Singh, Preeti Singla, Sonal Singhal
Introduction
Nanotubular materials have been the topic of current research interest for their potential applications in various fields such as catalysis, integrated circuits, biosensors, photovoltaic devices, etc. [1-5].
Controlled dimensionality and size of these tubular carbon materials have also been regarded as significant factors that lead to certain unexpected properties, for example, isotropic or anisotropic behavior and region-dependent surface reactivity.
Infrared analysis generally finds encounters associated with carbon materials, yet this technique is useful for studying the nature of oxygen surface groups.
Dekker, Logic Circuits with Carbon Nanotube Transistors, Science 294 (2001) 1317-1320
Bharadwaj, Comparative study of carbon nanotube dispersion using surfactants; Journal of Colloid and Interface Science 328 (2008) 421–428
Controlled dimensionality and size of these tubular carbon materials have also been regarded as significant factors that lead to certain unexpected properties, for example, isotropic or anisotropic behavior and region-dependent surface reactivity.
Infrared analysis generally finds encounters associated with carbon materials, yet this technique is useful for studying the nature of oxygen surface groups.
Dekker, Logic Circuits with Carbon Nanotube Transistors, Science 294 (2001) 1317-1320
Bharadwaj, Comparative study of carbon nanotube dispersion using surfactants; Journal of Colloid and Interface Science 328 (2008) 421–428
Online since: November 2011
Authors: Yu Quan Chen, Wan Ting Niu, Lu Yao Zhang, Min Pan
I.Introduction
Magnetic probes has gained widespread interest across several disciplines such as chemistry, life sciences and biomedicine due to its excellent magnetic control properties, and can be used in magnetic separation[1], molecular imaging[2], intracellular hyperthermia[3] as well as drug delivery system[4].
II.Materials and Methods A Reagents and Instruments All chemicals were analytical reagent grade without further purification.
III.Results and Discussions A Morphology and diameter of dextran coated SPIO Fig. 1 (A) TEM image of dextran coated SPIO and (B) statistical diameter distribution by Micrograph Fig. 1 (A) shows that the morphology of the most of the SPIO was nearly spherical, and dispersed well in water; the diameter of dextran coated SPIO was around 8-10nm, and the superparamagnetic behavior of the materials can be attributed to such a small size.
Pellegrino, “From iron oxide nanoparticles towards advanced iron-based inorganic materials designed for biomedical applications,” Pharmacol.
Xu, “Efficient Synthesis of α-D-Glucose-1-Phosphate by Maltodextrin Phosphorylase Immobilized on Amino-functionalized Magnetic Nanoparticles,” Chinese Journal of Catalysis, vol.31, no.9, pp. 1227-1232, October 2010
II.Materials and Methods A Reagents and Instruments All chemicals were analytical reagent grade without further purification.
III.Results and Discussions A Morphology and diameter of dextran coated SPIO Fig. 1 (A) TEM image of dextran coated SPIO and (B) statistical diameter distribution by Micrograph Fig. 1 (A) shows that the morphology of the most of the SPIO was nearly spherical, and dispersed well in water; the diameter of dextran coated SPIO was around 8-10nm, and the superparamagnetic behavior of the materials can be attributed to such a small size.
Pellegrino, “From iron oxide nanoparticles towards advanced iron-based inorganic materials designed for biomedical applications,” Pharmacol.
Xu, “Efficient Synthesis of α-D-Glucose-1-Phosphate by Maltodextrin Phosphorylase Immobilized on Amino-functionalized Magnetic Nanoparticles,” Chinese Journal of Catalysis, vol.31, no.9, pp. 1227-1232, October 2010
Online since: December 2011
Authors: I. Aubert, J. Jumel, M. Tarek-Lamazouade, Julien Vulliet
Any improvement in materials and/or architecture of interconnects will make this technology more affordable and competitive.
Methods Materials.
Caboche, Journal of power sources, 193 (2009) 136–145 [9] S.
Saintier, Materials Science and Engineering: A, Volume 527, Issues 21-22, (2010), Pages 5858-5866 [11] J.
Chêne, Plastox2007, EDP Sciences, (2009) 131-145
Methods Materials.
Caboche, Journal of power sources, 193 (2009) 136–145 [9] S.
Saintier, Materials Science and Engineering: A, Volume 527, Issues 21-22, (2010), Pages 5858-5866 [11] J.
Chêne, Plastox2007, EDP Sciences, (2009) 131-145
Online since: December 2010
Authors: Peng Fei Li, Bao Dong Liu, Miao Xin Zhang, Zhi Mao Feng
The material of the steel plate is galvanized steel Q235A, its yield strength and allowable stress are 235, 140.
Acknowledgement This research was supported by National Natural Science Foundation of China (50878016).
Journal of Beijing Jiaotong University. 2009, 33(4):65-68
Journal of China & Foreign Highway. 2009, 29(6):141-145
Acknowledgement This research was supported by National Natural Science Foundation of China (50878016).
Journal of Beijing Jiaotong University. 2009, 33(4):65-68
Journal of China & Foreign Highway. 2009, 29(6):141-145
Online since: September 2013
Authors: Li Li Yan, Jian Hua Wang, Jian Nan Li, Yi Hui Ji
It indicated that the nano-particle polymer was an ideal material to form a thin and dense mud cake, as confirmed and presented by Sensory [4~5].
He: Journal of Drilling and Completion Fluids (In Chinese) Vol. 26 (2009), p. 60~62
Xu: Journal of Petroleum Drilling Techniques (In Chinese) Vol. 37 (2009), p. 61~62
Ning: Organic Structure Identification and Organic Spectroscopy (Science Press, China 2000)
He: Journal of Drilling and Completion Fluids (In Chinese) Vol. 26 (2009), p. 60~62
Xu: Journal of Petroleum Drilling Techniques (In Chinese) Vol. 37 (2009), p. 61~62
Ning: Organic Structure Identification and Organic Spectroscopy (Science Press, China 2000)
Online since: October 2013
Authors: Yao En Yang, Qing Min Wang
Each unit cross section of the cables is solid round and the selected material is made of aramid fiber composites.
Acknowledgements The study described in this paper was supported by the science and technology department of HeBei province grant (13210301D), Hundreds of excellent innovative talents in Colleges and Universities of Hebei Probince([2013]BR2-237) and also supported by Hebei "333 talent project” ([2012]334-6).
[3] Shipeng Wang, Yancai Xie, “Reliability-based analysis of responses of closed-loop vibration control systems with uncertain parameters”, Journal of IJACT, vol. 3, no. 8, pp. 245-254, 2011
[4] Jianli Wei, “A Risk Evaluation Method for the High-Technology Project Investment Based on ETWA Operator with 2-Tuple Linguistic Information”, Journal of Convergence Information Technology, vol. 5, no. 10, pp. 176-180, 2010.
Acknowledgements The study described in this paper was supported by the science and technology department of HeBei province grant (13210301D), Hundreds of excellent innovative talents in Colleges and Universities of Hebei Probince([2013]BR2-237) and also supported by Hebei "333 talent project” ([2012]334-6).
[3] Shipeng Wang, Yancai Xie, “Reliability-based analysis of responses of closed-loop vibration control systems with uncertain parameters”, Journal of IJACT, vol. 3, no. 8, pp. 245-254, 2011
[4] Jianli Wei, “A Risk Evaluation Method for the High-Technology Project Investment Based on ETWA Operator with 2-Tuple Linguistic Information”, Journal of Convergence Information Technology, vol. 5, no. 10, pp. 176-180, 2010.
Online since: October 2014
Authors: Tzong Shyng Leu, Chin Fong Lin
Introduction
Inkjet printing is a process that material is deposited onto a substrate by ejection of liquid droplet from a nozzle.
Acknowledgement The study was supported by the funding from Ministry of Science and Technology, Taiwan under the contract of NSC 102-2221-E-006 -091-MY3.
Concept, Design, and Model, Journal of Microelectromechanical System, 11, pp. 427–436, (2002) [5] F.
Part II: Fabrication, Implementation, and Characterization”, Journal of Microelectromechanical System, 11, 437–447, (2002)
Acknowledgement The study was supported by the funding from Ministry of Science and Technology, Taiwan under the contract of NSC 102-2221-E-006 -091-MY3.
Concept, Design, and Model, Journal of Microelectromechanical System, 11, pp. 427–436, (2002) [5] F.
Part II: Fabrication, Implementation, and Characterization”, Journal of Microelectromechanical System, 11, 437–447, (2002)
Online since: August 2015
Authors: S. Rajkumar, R. Maradona
The material of the pipe is chosen as copper and water is chosen as the fluid.
Raghavan, Experimental studies of a double-pipe helical heat exchanger, Experimental Thermal and Fluid Science. 29 (2005) 919–924
A, The effects of Prandtl numbers on local and average convective heat transfer characteristics in helical pipes, Journal of Heat Transfer. 119 (1997) 463–473
International Journal of Thermal Technologies. 3 (2013) 126-130.
Raghavan, Experimental studies of a double-pipe helical heat exchanger, Experimental Thermal and Fluid Science. 29 (2005) 919–924
A, The effects of Prandtl numbers on local and average convective heat transfer characteristics in helical pipes, Journal of Heat Transfer. 119 (1997) 463–473
International Journal of Thermal Technologies. 3 (2013) 126-130.