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Online since: March 2013
Authors: Yan Sun, Shao Yong Jiang, Zhou Wei, Xian Cai Lu
Table 1 Analysis data of energy spectrometer of nanocoating on shear slip surface of experimental specimens and native material component
Kind
Determining points
Content of component (%)
Sign
Seat
SiO2
Al2O3
Fe2O3
CaO
MgO
Na2O
K2O
Nanocoating layer of shear surface
H1
single nano-sized grains
66.47
19.78
2.8
8.04
2.91
H2
sphere compound grains
66.17
20.43
1.94
7.81
3.65
H3
flaser compound grains
67.02
20.75
1.55
8.40
2.28
Granitic material
71.73
14.19
0.34
1.56
0.44
4.22
4.24
3.2 The granite was also cut into a cylinder body (∅ 17mm and high 40mm), and next a triaxial compression test machine with piston (type CJ-500) was applied under axle load 960 MPa, confining pressure 80 MPa and room temperature (22℃).
Abe, 3D numerical simulations of fault gouge evolution during shear: Grin size reduction and strain cocalization, Earth and Planetary Science Letter, 274 (2008) 72-81
Abe, 3D numerical simulations of fault gouge evolution during shear: Grin size reduction and strain cocalization, Earth and Planetary Science Letter, 274 (2008) 72-81
Online since: January 2010
Authors: Anna Konstanciak
Although the test has confirmed
that coke undergoes grain degradation and volatile matter content reduction as it comes down the
blast furnace, the scatter of these effects in particular samples in Table 1 suggests that the analysis
of samples taken from the tuyères may not allow different coke batches to be compared.
The following calculation conditions were assumed: − the reaction system is a closed system, − reactions attain the condition of chemical equilibrium, − the pressure is constant (p = 2.5 atm), while the temperatures vary in the range from 1400 K to 1800 K, − chemical composition of 9.8% of ash in the coke: Fe - 8.8 %; Mn - 0.12 %; P - 0.590 %; S - 0.67 %; SiO2 - 40.0 %; Al2O3 - 26.5 %; CaO - 7.2 %; MgO - 3.6 %, − it was preliminarily assumed that several dozens different chemical compounds, either gaseous or condensed, might occur among the reaction products, − thermochemical data for particular substances were taken from the Computer Thermochemical Database of the TERMO system.
The following calculation conditions were assumed: − the reaction system is a closed system, − reactions attain the condition of chemical equilibrium, − the pressure is constant (p = 2.5 atm), while the temperatures vary in the range from 1400 K to 1800 K, − chemical composition of 9.8% of ash in the coke: Fe - 8.8 %; Mn - 0.12 %; P - 0.590 %; S - 0.67 %; SiO2 - 40.0 %; Al2O3 - 26.5 %; CaO - 7.2 %; MgO - 3.6 %, − it was preliminarily assumed that several dozens different chemical compounds, either gaseous or condensed, might occur among the reaction products, − thermochemical data for particular substances were taken from the Computer Thermochemical Database of the TERMO system.
Online since: July 2015
Authors: Viton Uthaisangsuk, Suttirat Punyamueang
The tempered martensite resulted in a significant reduction in the nanohardness when comparing with the martensitic islands in the base metal.
Jang , Predicting flow curves of two-phase steels from spherical nanoindentation data of constituent phases: Isostrain method vs. non-isostrain method , Int.
Jang , Predicting flow curves of two-phase steels from spherical nanoindentation data of constituent phases: Isostrain method vs. non-isostrain method , Int.
Online since: April 2013
Authors: Olivier Dalverny, Joel Alexis, Thibaut Fourcade, Adrien Broue, Jeremie Dhenni, Jean Michel Desmarres, Cedric Seguineau, Talal Masri
Thus, the whole elastic-plastic behaviour of thin layers can be characterized and provides meaningful data for improving design and reliability of MEMS with freestanding parts.
As the damage of material results in an invisible reduction of the effective area, an effective stress σ is calculated as: σ=σ SS (2) Combining (1) and (2) gives: σ=σ1-D (3) The principle of strain equivalence is based on the assumption that the behaviour law of virgin materials remains valid when replacing the applied stress σ by the equivalent stress σ.
As the damage of material results in an invisible reduction of the effective area, an effective stress σ is calculated as: σ=σ SS (2) Combining (1) and (2) gives: σ=σ1-D (3) The principle of strain equivalence is based on the assumption that the behaviour law of virgin materials remains valid when replacing the applied stress σ by the equivalent stress σ.
Online since: October 2010
Authors: Yuan Yuan Wang, Jian Bo Wang, Cheng Xiao Hu, Yan Lin Zhang
Recently international support for developing these relatively new sources of energy was increased due to their benefits one such benefit is the reduction in green house gas emissions [2,3].There has been some success in producing H2 fermentatively, from simple substrates such as glucose, monosaccharides, some well defined polysaccharide substances such as starch and cellulose [4,5] and some more complex and heterogeneous such as wastewater.
The values of P, Rm and λ for each batch were determined by best fitting the H2 production data for Eq. (1) using the Matlab 6.5.
The values of P, Rm and λ for each batch were determined by best fitting the H2 production data for Eq. (1) using the Matlab 6.5.
Online since: August 2009
Authors: Jun Sheng Liang, Chong Liu, Ling Jun Sun
The data in
Fig.12 was obtained using 60°C methanol at a flow rate of 0.1ml/min.
A 4-time increase of the peak power density of the fuel cell can be achieved by increasing the methanol temperature from 20°C to 80°C due to the speeding up of electrochemical kinetic and reduction of the membrane resistance in this procedure.
A 4-time increase of the peak power density of the fuel cell can be achieved by increasing the methanol temperature from 20°C to 80°C due to the speeding up of electrochemical kinetic and reduction of the membrane resistance in this procedure.
Online since: January 2010
Authors: Volker Schulze, Manuel Klemenz
For ρ = 0.5 mm in Fig. 3 a) the cyclic bending leads to a distinct reduction of the compressive
residual stresses within the first 0.1 mm below the notch ground and a flattening of the residual
stress peak with a slight shift to greater depths.
Its use as input data for the fatigue strength estimation is anyhow appropriate as it provides the correct depth of the compressive residual stress region. 0,0 0,1 0,2 0,3 0,4 0,5 -1200 -1000 -800 -600 -400 -200 0 200 SP SP + CB σ * a = 243 MPa Exp.
Its use as input data for the fatigue strength estimation is anyhow appropriate as it provides the correct depth of the compressive residual stress region. 0,0 0,1 0,2 0,3 0,4 0,5 -1200 -1000 -800 -600 -400 -200 0 200 SP SP + CB σ * a = 243 MPa Exp.
Online since: June 2010
Authors: Harshad A. Sonawane, Suhas S. Joshi
Recently, the use of
higher cutting speeds have shown promise in the reduction in tool wear and cutting forces and thus
improving machined surface quality to some extent [4-5].
Altintas, Prediction of Ball- end milling forces form orthogonal cutting data, International Journal of Machine Tools & Manufacture, Vol. 36, No. 9. pp. 1059-1072, 1996
Altintas, Prediction of Ball- end milling forces form orthogonal cutting data, International Journal of Machine Tools & Manufacture, Vol. 36, No. 9. pp. 1059-1072, 1996
Online since: October 2010
Authors: Abdelsamie Elmenshawi, Mohamed Sorour, Don Duchesne, Jocelyn Paquette, Aftab Mufti, Leslie Jaeger, Nigel Shrive
First,
axial compression was applied to obtain axial load-deformation data.
Also, the reduction in elastic modulus due to cracking would increase the damping level as compared to the uncracked behaviour.
Also, the reduction in elastic modulus due to cracking would increase the damping level as compared to the uncracked behaviour.
Online since: May 2010
Authors: Pavlo E. Markovsky
So, obtained data unambiguously illustrates advantages of LRHT employment for improvement
of fatigue properties of engine compressor blades made of two-phase α+β titanium alloy.
Table 2 Mechanical Properties of weld deposited specimens ## Condition Mechanical Properties σ0.2, MPa UTS, MPa Elongation, % Reduction of Area, % Impact Toughness, kgf/mm2 VT22+SP15 1 As-deposited 79,2 93,5 2,1 12,4 1,4 2 After LRHT 95,6 113,6 6,9 43,5 4,4 VT22+VT22 3 As-deposited 81,2 96,0 1,7 12,3 1,3 4 After LRHT 97,9 109,5 4,6 41,1 3,5 a b c Fig. 10.
Table 2 Mechanical Properties of weld deposited specimens ## Condition Mechanical Properties σ0.2, MPa UTS, MPa Elongation, % Reduction of Area, % Impact Toughness, kgf/mm2 VT22+SP15 1 As-deposited 79,2 93,5 2,1 12,4 1,4 2 After LRHT 95,6 113,6 6,9 43,5 4,4 VT22+VT22 3 As-deposited 81,2 96,0 1,7 12,3 1,3 4 After LRHT 97,9 109,5 4,6 41,1 3,5 a b c Fig. 10.