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Online since: March 2014
Authors: Hans-Jürgen Christ, Ken Wackermann
The development of the distributions with the degree of embrittlement and the number of loading cycles reflect the microstructural changes in both phases.
(austenite) and an average grain size of 28 μm (austenite) and 5 μm (ferrite).
In (a) the stress amplitude is plotted versus the number of cycles in linear scale and in (b) the course of the cyclic plastic strain amplitude is shown in a logarithmic scale of the loading cycles.
After a certain number of cycles most of the precipitates in the area of plastic deformation are dissolved and the softening slows down. 1h475°C 0h475°C 100h475°C 5h475°C Fig 4: Change of the model parameter g (mean value) of the bifurcated yield stress distribution function for (from top to bottom) the tests 0h475°C, 1h475°C, 5h475°C and 100h475°C.
(austenite) and an average grain size of 28 μm (austenite) and 5 μm (ferrite).
In (a) the stress amplitude is plotted versus the number of cycles in linear scale and in (b) the course of the cyclic plastic strain amplitude is shown in a logarithmic scale of the loading cycles.
After a certain number of cycles most of the precipitates in the area of plastic deformation are dissolved and the softening slows down. 1h475°C 0h475°C 100h475°C 5h475°C Fig 4: Change of the model parameter g (mean value) of the bifurcated yield stress distribution function for (from top to bottom) the tests 0h475°C, 1h475°C, 5h475°C and 100h475°C.
Online since: June 2011
Authors: Feng Li Huang, Jin Mei Gu, Yong Jian Lou, Guo Wen Liu
The discrete encoding manner is adopted, and the real solutions are kept when ants code, therefore, real number or discrete encoding manner is adopted in cross and variation operation.
This problem is solved by NSGAII, the encoding use real numbers.
Set the number of population is 20, crossover possibility is 0.9, mutation possibility is 0.1, is 100, the number of population renewing used the expression , stands for the iteration times.
The number of ants is set as 16 to maintain the diversity of this problem better, the number of ants which enhance the local capacity of searching optimal solution by using the manner of positive feedback is 4.
Multi-objective Runner Optimization of Injection Mold Based on Variable-grain Strategy.
This problem is solved by NSGAII, the encoding use real numbers.
Set the number of population is 20, crossover possibility is 0.9, mutation possibility is 0.1, is 100, the number of population renewing used the expression , stands for the iteration times.
The number of ants is set as 16 to maintain the diversity of this problem better, the number of ants which enhance the local capacity of searching optimal solution by using the manner of positive feedback is 4.
Multi-objective Runner Optimization of Injection Mold Based on Variable-grain Strategy.
Online since: September 2013
Authors: Guang Li
Uygur architectural decorative patterns classification and the development and application of information technology
GuangLi1
Xinjiang Construction Vocational and Technical College, China
Email:xjlg5677@163.com
Keywords: Uygur architectural decorative patterns;Geometric pattern;Plant grain;Text lines and Classification of patterns;Patterns of development and application of information technology
Abstract:Uygur architectural decorative patterns is an important part of Chinese traditional culture , which is reflect the history of the nation's art form.
At second ,patterns stored in paper records are also facing problems susceptible to corrosion and damage; Third, mastering the craft of decorative patterns Uyghur craftsmen in the community is not given more attention, there is no economic security, the number gradually reduced, resulting in the loss of the traditional process gradually.
At second ,patterns stored in paper records are also facing problems susceptible to corrosion and damage; Third, mastering the craft of decorative patterns Uyghur craftsmen in the community is not given more attention, there is no economic security, the number gradually reduced, resulting in the loss of the traditional process gradually.
Online since: July 2011
Authors: Hong Gao, Zhi Qiang Hu, Jiao Kang, Hong Ru Zhou, Shang Ru Zhai, Ying Qin
It was shown that, with the sintering temperature of 1000 oC and the amount of PEG-400 of 1.5 wt % , the size of primary crystal grain was about 48 nm.
Then it creates hydrogen-based between a large number of ether bonds (-O-) and -OH which coats on the particle surface.
Then it creates hydrogen-based between a large number of ether bonds (-O-) and -OH which coats on the particle surface.
Online since: October 2010
Authors: Chun Rong Wang, Zhu Fa Zhou, Yan Jie Li, Ran Ran Tian, Xiao Chun Dai
Fig. 2 (a) shows spherical α-Fe2O3 cores are very uniform, stably dispersed and the average grain diameter of the particles is 80 nm.
Compared to α-Fe2O3 seeds, it is clear that the surface of typical spherical α-Fe2O3 /Ag core/shell structures in Fig. 2 (b) and (c) is not smooth, instead there are some flecks spreading on the surface, indicating that a large number of Ag particles may be included in theα-Fe2O3 nanoparticles.
The α-Fe2O3/Ag core/shell structures are very uniform, well dispersed and the average grain diameter of the particles is 95 nm.
Compared to α-Fe2O3 seeds, it is clear that the surface of typical spherical α-Fe2O3 /Ag core/shell structures in Fig. 2 (b) and (c) is not smooth, instead there are some flecks spreading on the surface, indicating that a large number of Ag particles may be included in theα-Fe2O3 nanoparticles.
The α-Fe2O3/Ag core/shell structures are very uniform, well dispersed and the average grain diameter of the particles is 95 nm.
Online since: October 2010
Authors: Xue Hui Zhao, Zhen Quan Bai, Kai Lin, Yan Han
Fig.6(a2) shows that the number of pits on the surface of Incoloy825, and there was a slight attack on the InconelG3.
Similarly, corrosion scale consisted of white grains as shown in Fig.7(b1), but the grains became fine relatively and local areas on the surface, Fig.7(b2) shows that the pitting was lightened.
Similarly, corrosion scale consisted of white grains as shown in Fig.7(b1), but the grains became fine relatively and local areas on the surface, Fig.7(b2) shows that the pitting was lightened.
Online since: April 2011
Authors: Evgeny N. Selivanov, R.I. Gulyaeva, L.Y. Udoeva, A.D. Verchinin
Introduction
A number of studies [1-5] have been dedicated to processes underlying the oxidation of sulfides of nonferrous metals.
In addition to the counter diffusion of ions of oxygen and the metals through a layer of oxide-sulfide products of the reactions, it was found that sulfur saturated the unreacted central part of the sulfide grains.
This is explained by the occurrence of diffusion processes and a different composition of the surface on the side of the sulfide grains.
In addition to the counter diffusion of ions of oxygen and the metals through a layer of oxide-sulfide products of the reactions, it was found that sulfur saturated the unreacted central part of the sulfide grains.
This is explained by the occurrence of diffusion processes and a different composition of the surface on the side of the sulfide grains.
Online since: August 2015
Authors: Christopher Machio, Hilda Kundai Chikwanda, Ronald Machaka, Thembinkosi Shabalala
A number of empirical equations have been proposed to characterize densification behaviour and expose underlying densification mechanisms.
Using the Scherrer equation, the mean grain sizes of the TiH2 and SS316L phases in the powder blend were determined to be 10.5nm and 18.6nm, respectively.
This behaviour is uncharacteristic for conventional coarse-grained polycrystalline materials, but it has been observed and discussed for nanocomposite powders [21].
Using the Scherrer equation, the mean grain sizes of the TiH2 and SS316L phases in the powder blend were determined to be 10.5nm and 18.6nm, respectively.
This behaviour is uncharacteristic for conventional coarse-grained polycrystalline materials, but it has been observed and discussed for nanocomposite powders [21].
Online since: February 2016
Authors: Andrey S. Babenko, Yuri E. Yakimov, Ksenia A. Petrochenko, Alexander V. Kurovsky
In a number of cases the specific microbial strains were secured from earthworms’ coprolites for effective protective bacterization of grain crops [5].
Zotikova Effectiveness of applying microorganisms isolated from earthworm coprolites in increasing yielding capacity of grain crops, Sib.
Zotikova Effectiveness of applying microorganisms isolated from earthworm coprolites in increasing yielding capacity of grain crops, Sib.
Online since: July 2007
Authors: Edgar F. Rauch, G. Shigesato
Introduction
The stress and hardening behaviours of metals are related to structural features like dislocation
densities or grain size.
The latter is related to the average intragranular misorientation gradient [13] through: ∑ ∆ == = 15 1 )F( x2bN. 1 1 θ θθ θ ρ dx d b (1) with F(θ) being the misorientation angle distribution calculated over the whole map in both x and y directions, b is the burgers vector, N is the total number of pixels and ∆x the step size.
The sum is limited to the range 1°<θ<15° to exclude most of the noise and eventual grain boundaries.
The latter is related to the average intragranular misorientation gradient [13] through: ∑ ∆ == = 15 1 )F( x2bN. 1 1 θ θθ θ ρ dx d b (1) with F(θ) being the misorientation angle distribution calculated over the whole map in both x and y directions, b is the burgers vector, N is the total number of pixels and ∆x the step size.
The sum is limited to the range 1°<θ<15° to exclude most of the noise and eventual grain boundaries.