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Online since: April 2013
Authors: R. Rezzoug, H. Djelouah, L. Louni
The echo of the resonant part is used in non-destructive testing to identify and characterize materials for both their bodies and their geometric shapes.
It is in this context that the RST has been widely used to identify different materials on the basis of their resonance spectrum.
The MIIR (method of isolation and identification of resonances) is an experimental technique developed by Maze et al. [15] to check the results of the RST for different materials.
Uberall ,” Acoustic resonance scattering “, Gordon and breach science .1992
JSME International Journal Series C, Vol 47, N°1, 2004, pp 297-304
It is in this context that the RST has been widely used to identify different materials on the basis of their resonance spectrum.
The MIIR (method of isolation and identification of resonances) is an experimental technique developed by Maze et al. [15] to check the results of the RST for different materials.
Uberall ,” Acoustic resonance scattering “, Gordon and breach science .1992
JSME International Journal Series C, Vol 47, N°1, 2004, pp 297-304
Online since: August 2008
Authors: Marize Varella de Oliveira, Anderson Camargo Moreira, Carlos R. Appoloni, Luiz Carlos Pereira, Waléria Silva de Medeiros
However,
the toughness and fatigue resistance of these materials do not accomplish the requisites for
load-bearing implants that usually can be achieved by metallic biomaterials.
Dunand: Advanced Engineering Materials Vol. 6 (2004), p. 369
Jones: Surface Science Reports Vol. 42 (2001), p.75
Pilliar: Journal of Orthopedic Research Vol. 19 (2002), p. 187
Brinson: Mechanical Materials January (2005), p. 1
Dunand: Advanced Engineering Materials Vol. 6 (2004), p. 369
Jones: Surface Science Reports Vol. 42 (2001), p.75
Pilliar: Journal of Orthopedic Research Vol. 19 (2002), p. 187
Brinson: Mechanical Materials January (2005), p. 1
Online since: September 2009
Authors: Yu Hong Huang, Yu Gang Zhao, Xian Jin Yu, Zeng Dian Zhao
Experimental
Instruments and Materials.
Material: The high temperature binder was self-made.
The glass phase could be due to the solidification of some eutectic material formed by some materials and sintering additives in the process of sintering.
Acknowledgements The authors acknowledge the National Natural Science Foundation of China(50775133)for financial support.
Kokubo: Journal of Non-Crystalline Solids, Vol. 82 (1986) No.1-3, pp 24-30
Material: The high temperature binder was self-made.
The glass phase could be due to the solidification of some eutectic material formed by some materials and sintering additives in the process of sintering.
Acknowledgements The authors acknowledge the National Natural Science Foundation of China(50775133)for financial support.
Kokubo: Journal of Non-Crystalline Solids, Vol. 82 (1986) No.1-3, pp 24-30
Online since: June 2010
Authors: Ramana G. Reddy, Yu Hao Lu
Reddy
2,b
1
Graduate Student and 2ACIPCO Professor
Department of Metallurgical and Materials Engineering, The University of Alabama, P.O.
The material used on (100) n-type wafers.
Reddy, in: Materials in Clean Power System II.
TMS (The Minerals, Metals & Materials Society), (2007), p.11 [8] H.
Reddy, Journal of Power Sources, Vol. 129, pp. 62-67, 2004
The material used on (100) n-type wafers.
Reddy, in: Materials in Clean Power System II.
TMS (The Minerals, Metals & Materials Society), (2007), p.11 [8] H.
Reddy, Journal of Power Sources, Vol. 129, pp. 62-67, 2004
Online since: November 2014
Authors: Liang Jing Zhang, Su Ping Cui, Hong Xia Guo, Xiao Yu Ma, Xiao Gen Luo
Effect of Cerium on Manganese Base Catalysts by Co-Precipitation for Low-Temperature SCR of NO with NH3
Liangjing Zhang a, Suping Cui b *, Hongxia Guo, Xiaoyu Ma, and Xiaogen Luo
Department of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, P.R.
The crystal structures of the catalytic materials were determined by X-ray diffraction using a Shimadzu XRD-7000 diffract meter with a Cu-Kα radiation (wavelength 1.5406Å).
Catalytic materials were pretreated at 473 K under vacuum, and the analysis of the supports was done at 77 K under vacuum.
Journal of Hazardous Materials 162 (2009) 249–1254
The crystal structures of the catalytic materials were determined by X-ray diffraction using a Shimadzu XRD-7000 diffract meter with a Cu-Kα radiation (wavelength 1.5406Å).
Catalytic materials were pretreated at 473 K under vacuum, and the analysis of the supports was done at 77 K under vacuum.
Journal of Hazardous Materials 162 (2009) 249–1254
Online since: September 2014
Authors: Yulia Tarasevich, Anna Savchenko
To solve this problem it is needed to know intensities of wear of seal materials.
On the basis of the experimental data in [10], the activity of seal surfaces wear depends on material, form and state of surface, mechanical descriptions of material (durability, hardness, elastic), flow velocity.
References [1] Black H.F., Effects of Hydraulic Forces in Annular Pressure Seals on the Vibrations of Centrifugal Pump Rotors, J. of Mechanical Engineering Science, Vol. 11, N2 (1969) 206-213
[4] San Andres L., Dynamic Force and Moment Coefficients for Short Length Annular Seals, Journal of Tribology, Vol.115, N1 (1993) 61-70
[10] Ratner A.V., Zelensky V.G., Erosion of materials of thermal power equipment, Energy, Moscow, 1966
On the basis of the experimental data in [10], the activity of seal surfaces wear depends on material, form and state of surface, mechanical descriptions of material (durability, hardness, elastic), flow velocity.
References [1] Black H.F., Effects of Hydraulic Forces in Annular Pressure Seals on the Vibrations of Centrifugal Pump Rotors, J. of Mechanical Engineering Science, Vol. 11, N2 (1969) 206-213
[4] San Andres L., Dynamic Force and Moment Coefficients for Short Length Annular Seals, Journal of Tribology, Vol.115, N1 (1993) 61-70
[10] Ratner A.V., Zelensky V.G., Erosion of materials of thermal power equipment, Energy, Moscow, 1966
Online since: July 2005
Authors: Shuangquan Tang, Ming Bo Yang, Fu Sheng Pan
Effects of Technological Factors on the Mold Filling Velocity of
Magnesium Alloys in the Expendable Pattern Casting (EPC) Process
Mingbo Yang
1,a
, Fusheng Pan
2,b
, Shuangquan Tang3,c
1
Chongqing Institute of Technology, No.4 Xingsheng Road, Yangjiaping, Chongqing400050, P.R.China
2
College of Materials Science and Engineering, Chongqing University, Chongqing400044, P.R.China
3
Chongqing Nanchuan Machinery Industry Co.
Introduction Magnesium alloys are the lightest structural materials, which are gaining increased importance for automotive application due to its low density, high strength-to-weight ratio, good machinability, and excellent castability, etc.
High-pressure die casting is currently the preferred route for the advanced materials.
The combination of the advanced technology of the EPC process with the lightest structural materials will surely bring a bright future for the application of magnesium alloys, especially in the casting of thin-wall, complex-geometry and smooth as-cast surface of components [1,2].
Fu, C.W.Ramsay and D.R.Askeland: AFS.Trans Vol.105(1997), p.419 [5] Z.L.Liu, G.H.Wu and W.J.Ding: Journal of Aeronautical Mater(in chinese).
Introduction Magnesium alloys are the lightest structural materials, which are gaining increased importance for automotive application due to its low density, high strength-to-weight ratio, good machinability, and excellent castability, etc.
High-pressure die casting is currently the preferred route for the advanced materials.
The combination of the advanced technology of the EPC process with the lightest structural materials will surely bring a bright future for the application of magnesium alloys, especially in the casting of thin-wall, complex-geometry and smooth as-cast surface of components [1,2].
Fu, C.W.Ramsay and D.R.Askeland: AFS.Trans Vol.105(1997), p.419 [5] Z.L.Liu, G.H.Wu and W.J.Ding: Journal of Aeronautical Mater(in chinese).
Online since: September 2013
Authors: Qing Long An, Ming Chen, Jia Jin Tian, Chang Ying Wang
Woon et al. [3] have studied the friction between the rounded cutting edge and the machined material by means of FEM.
As a kind of newly developed material, 30Cr3 has not obtained much attention.
The thickness of the cut material is maximum when the cutter enters the workpiece and zero when the cutter cut out the workpiece.
Acknowledgement The work was supported by the Important National Science & Technology Specific Projects (2013ZX04009-031).
Zhou: Journal of South China University of Technology.
As a kind of newly developed material, 30Cr3 has not obtained much attention.
The thickness of the cut material is maximum when the cutter enters the workpiece and zero when the cutter cut out the workpiece.
Acknowledgement The work was supported by the Important National Science & Technology Specific Projects (2013ZX04009-031).
Zhou: Journal of South China University of Technology.
Online since: December 2010
Authors: Chang Jun Ke, Hao Wang, Tao Ke
For autoclaved material, we can obtain high compressive strength autoclaved silicate products with waste concrete.
Experiment materials and methods Waste concrete: Choose three kinds of waste concrete whose coarse aggregate is granite.
a b c d Fig.1 XRD patterns of raw materials a, waste concretes; b, granite; c, cement; d, hydrated cement at room temperature Pressure molded in φ36×36mm cylindrical model, and the pressure of forming is 0.6MPa.
Acknowledge This research has been supported by natural science foundation in Hubei province and national college student’s innovation experiment plan.
Journal of Building Materials, 3 (04) (2000), p 376 (In Chinese)
Experiment materials and methods Waste concrete: Choose three kinds of waste concrete whose coarse aggregate is granite.
a b c d Fig.1 XRD patterns of raw materials a, waste concretes; b, granite; c, cement; d, hydrated cement at room temperature Pressure molded in φ36×36mm cylindrical model, and the pressure of forming is 0.6MPa.
Acknowledge This research has been supported by natural science foundation in Hubei province and national college student’s innovation experiment plan.
Journal of Building Materials, 3 (04) (2000), p 376 (In Chinese)
Online since: October 2013
Authors: Wen Li, Hai Nan Yan, Peng Wang, Xiao Gang Chen, Li Na Yao
This article will use the ANSYS / LS-DYNA software on the mechanical properties of the concrete under axial compression reinforcement FRP pipes for analysis.
2 The finite element analysis model established of reinforcement with FRP pipe concrete axial compression
2.1 Real constant selection
GFRP pipe, the bending modulus of elasticity 19.5Mpa, Poisson's ratio of 0.3; concrete compressive strength = 25MPa, elastic modulus = 21GPa, Poisson's ratio is 0.2; reinforced, elastic modulus = 200GPa, Poisson's ratio of 0.3, yield strength = 364Mpa (measured).
2.2 Materials selection unit and constitutive relations selection
(1) Reinforced constitutive relations.
The GFRP pipe unit with ANSYS shell41 film unit, it can only bear tensile force without the bending and compressive ability, It is conformed the GFRP pipe constraint force of the reinforced concrete axial compression member, the fibrous material of the uniform anisotropic, The direction of the vertical fiber material is not strength.
Many tests proved nearly ideal elastic the FRP material the stress - strain relationship, in the finite element analysis, set the FRP materials for the ideal elastic material, that fibrous rupture and fiber stress exceeds the tensile strength calculated terminated
Journal of Structural Engineering, 1997, 123(1):86-94
Shanxi Science and Technology Press, 1994
The GFRP pipe unit with ANSYS shell41 film unit, it can only bear tensile force without the bending and compressive ability, It is conformed the GFRP pipe constraint force of the reinforced concrete axial compression member, the fibrous material of the uniform anisotropic, The direction of the vertical fiber material is not strength.
Many tests proved nearly ideal elastic the FRP material the stress - strain relationship, in the finite element analysis, set the FRP materials for the ideal elastic material, that fibrous rupture and fiber stress exceeds the tensile strength calculated terminated
Journal of Structural Engineering, 1997, 123(1):86-94
Shanxi Science and Technology Press, 1994