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Online since: April 2021
Authors: P.A. Gamov, A.R. Tabylbaeva, A. Bil'genov
Materials and Experimental
Dunite is a mineral formed by silicates of magnesium and iron with segregated inclusions of chromite.
Reduction of Kemi chromite with methane, Journal of the Southern African Institute of Mining and Metallurgy, 2018, Т. 118, № 6, pp. 575-580
[2] Roshchin A.V Crystal-chemical transformations in oxides during metallization of poor and complex iron-containing ores: thesis. for a job. student degree of candidate of technical sciences, A.V.
Features of the selection of the metal phase in different mineral components of dunite, Current problems of steel electrometallurgy: materials of the XVI International conference: 2 hours, ed.
Metallographic Estimation of the Number of Forming Metallic Particles Obtained during Direct and Indirect Reduction of Metals from Complex Oxides, Materials Science Forum, Vol. 946, pp. 523–527
Reduction of Kemi chromite with methane, Journal of the Southern African Institute of Mining and Metallurgy, 2018, Т. 118, № 6, pp. 575-580
[2] Roshchin A.V Crystal-chemical transformations in oxides during metallization of poor and complex iron-containing ores: thesis. for a job. student degree of candidate of technical sciences, A.V.
Features of the selection of the metal phase in different mineral components of dunite, Current problems of steel electrometallurgy: materials of the XVI International conference: 2 hours, ed.
Metallographic Estimation of the Number of Forming Metallic Particles Obtained during Direct and Indirect Reduction of Metals from Complex Oxides, Materials Science Forum, Vol. 946, pp. 523–527
Online since: July 2011
Authors: Cui Ying Lu, Xiao Wei Yin, Xiang Ming Li
As to polycrystalline materials, space charge polarization, ion vibration, electron polarization losses and deformation losses all happen in the frequency above GHz, so the dielectric loss tangent can be expressed as follows:
(2)
where εc" is the loss factor because of conductivity, εR" is the loss factor because of ion jump and dipole relaxation.
As known from formula (2), electrical conductivity loss is a key factor for many dielectric materials [17,25-27].
Oha: Journal of Analytical and Applied Phyrolysis, Vol. 9 (1986), p. 227-254
Goetz and et al: Diamond and Related Materials, Vol. 1 (1992), p. 875-881
Stinton: Science Vol.235 (1991), p. 1104-1109
As known from formula (2), electrical conductivity loss is a key factor for many dielectric materials [17,25-27].
Oha: Journal of Analytical and Applied Phyrolysis, Vol. 9 (1986), p. 227-254
Goetz and et al: Diamond and Related Materials, Vol. 1 (1992), p. 875-881
Stinton: Science Vol.235 (1991), p. 1104-1109
Online since: May 2011
Authors: Dong Quan Yang, Hong Peng
By fiber model, beams composed of composite materials, such as reinforced concrete beams, can be easily accounted for.
Because different fiber can have different material properties, we can use this method to account for offset problems [7], in which we can set the material properties of some fibers to be zero. 4.
Assuming small strains, the material model used for materially-nonlinear-only analysis can be directly employed in the Total Lagrange formulation for large displacement and large rotation analysis by simply substituting in the material characterization the second Piola-Kichhoff stresses and Green-Lagrange strains for the small displacement engineering stress and strain measures [5].
For perfectly plastic material, , , .
Acknowledgement This work is supported by Natural Science Foundation of Hainan Province, PR China (808100) References [1] E.N.
Because different fiber can have different material properties, we can use this method to account for offset problems [7], in which we can set the material properties of some fibers to be zero. 4.
Assuming small strains, the material model used for materially-nonlinear-only analysis can be directly employed in the Total Lagrange formulation for large displacement and large rotation analysis by simply substituting in the material characterization the second Piola-Kichhoff stresses and Green-Lagrange strains for the small displacement engineering stress and strain measures [5].
For perfectly plastic material, , , .
Acknowledgement This work is supported by Natural Science Foundation of Hainan Province, PR China (808100) References [1] E.N.
Online since: January 2012
Authors: Jian Xiong Ye, Lin Wen Yu, Yi Zhang
The Effect of Limestone Powder and Clay Content on MB Value of Manufactured Sand
Ye Jianxiong1,a, Yu Linwen1,b, Zhang Yi2,c
1College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China
2Chongqing Consturtion Residential Engineering Co., Ltd,Chongqing 400045, China
ayjxiong1974@163.com, byulw@cqu.edu.cn, c zhangyi_2000@tom.com
Keywords: manufactured sand; limestone powder content; MB value; clay content.
All the materials were dried to constant weight at (105±5)℃, and then cooled to room temperature for standby application.
Evaluation of Manufactured Stone Sand for Use in Virginia Construction Materials Research and Development.
Vulcan Materials Company, 1985.3
ACI Journal, Proceedings, 1985, 82(3):363-371
All the materials were dried to constant weight at (105±5)℃, and then cooled to room temperature for standby application.
Evaluation of Manufactured Stone Sand for Use in Virginia Construction Materials Research and Development.
Vulcan Materials Company, 1985.3
ACI Journal, Proceedings, 1985, 82(3):363-371
Online since: June 2022
Authors: Antonín Kříž, Zbyněk Špirit, David Bricin, Josef Odehnal
The sample material was made of an unspecified copper alloy.
Typical for these defects is that the moulding material remains baked in their vicinity.
This article was made possible by funding from the SGS‐2018‐051 project “Application of new treatment and test procedures to surfaces and bulk materials for improved usability of assemblies and work tools in industry”.
Smart, Investment Casting, London: The Institute of Material, Minerals and Mining, 1995
Journal of Materials Processing Technology, 178(1-3), (2006) pp.29-33
Typical for these defects is that the moulding material remains baked in their vicinity.
This article was made possible by funding from the SGS‐2018‐051 project “Application of new treatment and test procedures to surfaces and bulk materials for improved usability of assemblies and work tools in industry”.
Smart, Investment Casting, London: The Institute of Material, Minerals and Mining, 1995
Journal of Materials Processing Technology, 178(1-3), (2006) pp.29-33
Online since: November 2016
Authors: Nasri A. Hamid, Yusof Abdullah, Nor Faizah Jamal, Zaahidah Atiqah Mohiju
Ions and particles irradiation have shown to be able to influence the growth, dislocations or crystal defects in microstructure of most materials, and eventually could altered the mechanical and electrical properties of the materials [2-6].
In addition, it has been reported that collision of particles by irradiation or heavy ions would introduce columnar amorphous regions along the cascades of materials and become effectives pinning centers [8,9].
It was also reported that the strength of ceramics materials increases with decreasing porosity [12].
See, in: Proceedings of the International Workshop on New Trends in Science and Technology, edited by Z.B.
Asbullah: Journal of Nuclear and Related Technologies Vol. 9(2) (2012), p. 1 [4] Z.
In addition, it has been reported that collision of particles by irradiation or heavy ions would introduce columnar amorphous regions along the cascades of materials and become effectives pinning centers [8,9].
It was also reported that the strength of ceramics materials increases with decreasing porosity [12].
See, in: Proceedings of the International Workshop on New Trends in Science and Technology, edited by Z.B.
Asbullah: Journal of Nuclear and Related Technologies Vol. 9(2) (2012), p. 1 [4] Z.
Online since: December 2011
Authors: Gui Xiang Zeng
District main physical and mechanical parameters of materials shown in Table 1, in which is the static elastic modulus.
Table 1 District materials are mainly mechanical parameters Material Compressive strength (MPa) Tensile strength (MPa) Elastic modulus (GPa) Density (kg/m3) Poisson's ratio A(I) RCC200 20.3 1.54 20.8 2408 0.167 A(II) RCC150 15.7 1.24 16.2 2448 0.167 A(III) CVC200 22.7 1.75 25.4 2400 0.167 Muddy siltstone 14.48 - 6.79 2530 0.27 Conglomerate 20.54 - 2.11 2520 0.25 Sandstone 34.76 - 12.9 2540 0.23 C15 18.2 1.40 21.2 2400 0.167 C20 22.7 1.75 25.4 2400 0.167 C25 26.6 2.15 29.9 2400 0.167 The finite element mesh.
In the case of empty reservoir, most of the regions are in compression, due to the compressive strength of concrete materials be of better performance, therefore that the dam heel Department compressive stress is also much smaller than the design value of compressive strength of concrete will not harm dam.
Sichuan Building Science, Vol.1(2006), p.43-45, in Chinese
Engineering Journal of Wuhan University, Vol.6(2003), p.22-26, in Chinese
Table 1 District materials are mainly mechanical parameters Material Compressive strength (MPa) Tensile strength (MPa) Elastic modulus (GPa) Density (kg/m3) Poisson's ratio A(I) RCC200 20.3 1.54 20.8 2408 0.167 A(II) RCC150 15.7 1.24 16.2 2448 0.167 A(III) CVC200 22.7 1.75 25.4 2400 0.167 Muddy siltstone 14.48 - 6.79 2530 0.27 Conglomerate 20.54 - 2.11 2520 0.25 Sandstone 34.76 - 12.9 2540 0.23 C15 18.2 1.40 21.2 2400 0.167 C20 22.7 1.75 25.4 2400 0.167 C25 26.6 2.15 29.9 2400 0.167 The finite element mesh.
In the case of empty reservoir, most of the regions are in compression, due to the compressive strength of concrete materials be of better performance, therefore that the dam heel Department compressive stress is also much smaller than the design value of compressive strength of concrete will not harm dam.
Sichuan Building Science, Vol.1(2006), p.43-45, in Chinese
Engineering Journal of Wuhan University, Vol.6(2003), p.22-26, in Chinese
Online since: May 2007
Authors: Anil K. Sachdev, Wen Jiang Ding, Alan A. Luo, Ying Xin Wang, Xiao Qin Zeng
Cole, Materials Science Forum, Vol. 419-422(2003), p. 43
[2] T.
Luo, (The Minerals, Metals and Materials Society,Warrendale, PA, 2004), p. 79 [4] R.Y.
Davies, Journal of Mater.
Beals (The Minerals, Metals and Materials Society,Warrendale, PA, 2006), p. 333 [6] Y.X.
Beals (The Minerals, Metals and Materials Society,Warrendale, PA, 2006), p. 245 [7] M.J.
Luo, (The Minerals, Metals and Materials Society,Warrendale, PA, 2004), p. 79 [4] R.Y.
Davies, Journal of Mater.
Beals (The Minerals, Metals and Materials Society,Warrendale, PA, 2006), p. 333 [6] Y.X.
Beals (The Minerals, Metals and Materials Society,Warrendale, PA, 2006), p. 245 [7] M.J.
Online since: March 2021
Authors: Hisaki Watari, Toshio Haga, Keisuke Oida, Shinichi Nishida
Watari: Semisolid strip casting using a vertical type twin roll caster, Materials Science Forum Vol. 426 (2003), p. 477-482
[18] T.
Ikawa: A vertical type twin roll caster for aluminum alloy strip, Journal of Materials Processing and Technology Vol. 140 (2003) ,p. 610-615 [19] T.
Kumai: A high speed twin roll caster for aluminum alloy thin strip, Transaction of the Materials Research Society of Japan Vol. 29 (2004), p. 1823-1828 [20] T.
Watari: A single roll caster for aluminum alloy strip, Advanced Materials ResearchVol. 382 (2012), p. 368-371 [21] T.Haga,K.Akitsu,K.Kamakura,S.Kumai,H.Watari: Single roll caster equipped with a scraper, Key Engineering Materials Vols. 504-506 (2012), p. 1243-1248 [22] T.
Ikawa: A vertical type twin roll caster for aluminum alloy strip, Journal of Materials Processing and Technology Vol. 140 (2003) ,p. 610-615 [19] T.
Kumai: A high speed twin roll caster for aluminum alloy thin strip, Transaction of the Materials Research Society of Japan Vol. 29 (2004), p. 1823-1828 [20] T.
Watari: A single roll caster for aluminum alloy strip, Advanced Materials ResearchVol. 382 (2012), p. 368-371 [21] T.Haga,K.Akitsu,K.Kamakura,S.Kumai,H.Watari: Single roll caster equipped with a scraper, Key Engineering Materials Vols. 504-506 (2012), p. 1243-1248 [22] T.
Online since: December 2022
Authors: Veysel Kobya, Ali Mardani, Burak Felekoğlu, Kambiz Ramyar, Kemal Karakuzu
Materials and Method
Materials.
Ramyar, Effect of cement C3A content on properties of cementitious systems containing high-range water-reducing admixture, Journal of Materials in Civil Engineering. 29 (2017) 04017066 [3] A.
Construction and Building Materials, 312, (2021), 125366
Science and technology of concrete admixtures.
Materials. 132, (2017), 112–123
Ramyar, Effect of cement C3A content on properties of cementitious systems containing high-range water-reducing admixture, Journal of Materials in Civil Engineering. 29 (2017) 04017066 [3] A.
Construction and Building Materials, 312, (2021), 125366
Science and technology of concrete admixtures.
Materials. 132, (2017), 112–123