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Online since: November 2012
Authors: Junichi Harashita, Yuji Tomoda, Jun Shinozuka
Each thermocouple is numbered from 1 to 7 as shown in Fig.1 (a).
Many pinholes appear for Ni film and the grain size expands for Cu film [8].
Since the electrical conductivity or resistivity depends on the mean free path of electron or relaxation time for electron, pinhole or large crystal grain seems to affect the electrical property.
Many pinholes appear for Ni film and the grain size expands for Cu film [8].
Since the electrical conductivity or resistivity depends on the mean free path of electron or relaxation time for electron, pinhole or large crystal grain seems to affect the electrical property.
Online since: October 2013
Authors: Yin Suo Dai, Jian Dang Ding, Yue Hu Tan, Xiao Jun Yuan, Chun Hua Lu, Zi Ming Gong
Markou et al. [10] studied the effect of many factors such as grain sizes, water to cement, superplasticizer, on effectiveness of cement grouting and compression strength and permeability coefficient.
Table 4 Collected datum of strain at different load Number 1 2 3 4 5 6 7 8 9 10 Load/KN 0 7.2 8.5 20.6 30 42.6 60 68 79 87 Strain/mm 0 0 0.75 3.46 6.22 9.31 11.4 12.64 13.96 15.71 It can be seen in Table 4 that at the first stage, the stress increased to 7.2 kN while the strain remained unchanged.
Pull-out strength of axially loaded steel rods bonded in glulam perpendicular to the grain [J].
Table 4 Collected datum of strain at different load Number 1 2 3 4 5 6 7 8 9 10 Load/KN 0 7.2 8.5 20.6 30 42.6 60 68 79 87 Strain/mm 0 0 0.75 3.46 6.22 9.31 11.4 12.64 13.96 15.71 It can be seen in Table 4 that at the first stage, the stress increased to 7.2 kN while the strain remained unchanged.
Pull-out strength of axially loaded steel rods bonded in glulam perpendicular to the grain [J].
Online since: August 2013
Authors: Chih Chien Liu, Her Yung Wang, Wen Ten Kuo, Chun Ya Shu
The grains passed through #4 sieve.
The fine aggregate of the WMSWIBA was derived from the incinerator bottom ash in the south of Kaohsiung City, the grains passed through a #4 sieve, and the specific gravity was 2.21.
Table 3 shows that the cumulating plus sieve rates of WMSWIBA fine aggregate on the sieves of different numbers are higher than those of natural fine aggregate.
The fine aggregate of the WMSWIBA was derived from the incinerator bottom ash in the south of Kaohsiung City, the grains passed through a #4 sieve, and the specific gravity was 2.21.
Table 3 shows that the cumulating plus sieve rates of WMSWIBA fine aggregate on the sieves of different numbers are higher than those of natural fine aggregate.
Online since: June 2011
Authors: Sebastien Mercier, F. Popoff, Cecile Davoine, A. Götzfried
It consists in causing grains of metal powder to adhere to the surface of expanded polystyrene balls, using an organic binder by using a fluidized bed and then using a thermal sintering technique on a set of the spheres once they have been brought into contact.
Only one step is needed to eliminate the organic components (polystyrene and binder), densify the shells by sintering with grains of powder and assemble the spheres together.
As a indeterminated number of hollow spheres are open because of defect in their shell or because of the sample cutting, the exposed surface of the samples is difficult to determine precisely, the results are given in terms of a simple mass rather than a mass per unit surface.
Only one step is needed to eliminate the organic components (polystyrene and binder), densify the shells by sintering with grains of powder and assemble the spheres together.
As a indeterminated number of hollow spheres are open because of defect in their shell or because of the sample cutting, the exposed surface of the samples is difficult to determine precisely, the results are given in terms of a simple mass rather than a mass per unit surface.
Online since: August 2018
Authors: Wen Zhong Lu, Fei Liang, Zi Qing Zeng, Gui Fen Fan, Xiao Hong Wang, Meng Meng Hao
Furthermore, high decomposition temperature of sulfate inhibits grain growth resulting in small particle size and less agglomeration [17,18].
YAG powders agglomeration can be attributed to too fast grain growth, which is detrimental to the densification of YAG ceramic [24].
For YAG-1.5 there are a large number of fine particles around the coarse particles.
YAG powders agglomeration can be attributed to too fast grain growth, which is detrimental to the densification of YAG ceramic [24].
For YAG-1.5 there are a large number of fine particles around the coarse particles.
Online since: October 2006
Authors: Fumio Takeo, Masumi Saka, S. Reaz Ahmed
This problem of crack closure becomes more serious in the case of back-wall cracks in
thick-walled structures, especially in the welded regions, as the large scattering noise from the grain
boundaries of the weld metals decreases the accuracy of the evaluation drastically.
Therefore, DCPD technique is realized to be capable of eliminating some of the major problems encountered in the ultrasonic testing of cracks, as it is practically free from the problem of crack closure as well as that of grain noises.
The accuracy as well as reliability of the developed measuring system has been verified through the evaluation of a number of 3-D back-wall cracks in 40mm-thick stainless steel plates.
Therefore, DCPD technique is realized to be capable of eliminating some of the major problems encountered in the ultrasonic testing of cracks, as it is practically free from the problem of crack closure as well as that of grain noises.
The accuracy as well as reliability of the developed measuring system has been verified through the evaluation of a number of 3-D back-wall cracks in 40mm-thick stainless steel plates.
Online since: July 2012
Authors: Zhan Chang Pan, Guang Hui Hu, Shi Rong Chen, Xin Long Tian, Qiong Yang, Guan He Luo, Yi Wang
The copper layer finally obtained is uniform and compact, for the copper grain size is mostly the same and the gap between the particles is extremely small.
3.3 Electrochemical detection of copper deposition process
Electroless plating was a process of redox reaction on the electrode at the same time.
Once the reaction started, formaldehyde began to be oxidized while a large number of Cu2 + was reduced, so the Cu2+ of the electrode’s surface was almost all consumed and the Cu2+ of the plating solution could not supply in time.
(2)Uniform copper particles could be obtained quickly, once the polyurethane resin catalyst is immersed in the electroless copper plating bath, with the extension of time, the copper layer finally obtained is dense and compact, the copper grain size is mostly the same and the gap between the particles is extremely small
Once the reaction started, formaldehyde began to be oxidized while a large number of Cu2 + was reduced, so the Cu2+ of the electrode’s surface was almost all consumed and the Cu2+ of the plating solution could not supply in time.
(2)Uniform copper particles could be obtained quickly, once the polyurethane resin catalyst is immersed in the electroless copper plating bath, with the extension of time, the copper layer finally obtained is dense and compact, the copper grain size is mostly the same and the gap between the particles is extremely small
Online since: December 2012
Authors: Dong Wei Liu, Jilili Abuduwaili
Saline playa is mainly composed of loose lacustrine salt-rich sediments in fine grain form [5,6].
In this period, blown by strong wind, the saline sediments were seriously eroded and the number of salt dust storm days would increase in consequence.
Li, The influence of dry lakebeds, degraded sandy grasslands and abandoned farmland in the arid inlands of northern China on the grain size distribution of East Asian aeolian dust, Environ Geol. 53 (2008) 1767–1775
In this period, blown by strong wind, the saline sediments were seriously eroded and the number of salt dust storm days would increase in consequence.
Li, The influence of dry lakebeds, degraded sandy grasslands and abandoned farmland in the arid inlands of northern China on the grain size distribution of East Asian aeolian dust, Environ Geol. 53 (2008) 1767–1775
Online since: May 2014
Authors: Mike Keavey, Joanna Walsh, John A. Francis, Philip J. Withers, Hamidreza Abdolvand, Alison Mark, N. O’Meara, H. Dai, S. Bate, B. Pellereau
In the general format, austenite transforms into other phases following:
dXdt=FT, G, C×SX
SX=X0.41-X1-X0.4X
(1)
where X represents ferrite, pearlite, or bainite phase fractions, F is a function of current temperature at an IP, G, the Prior Austenite Grain Size (PAGS), and C, the steel composition.
(a) Finite element input model showing the temperature distribution (˚{TTP}730 C) for the high speed autogenous weld with the centre of the torch being at the middle; (b) finite element calculation of bainite distribution in the middle of the beam for the slow speed traverse; (c) effect of prior Austenite grain size on the phase transformation from austenite into bainite: finite element results for cooling rate of 3 ˚{TTP}730 C/sec 4.
Comparison between results for ASTM PAGS number 0 and 3 in Fig. 1c shows that the change in the PAGS can change the nature of the transformation sigmoidal function.
(a) Finite element input model showing the temperature distribution (˚{TTP}730 C) for the high speed autogenous weld with the centre of the torch being at the middle; (b) finite element calculation of bainite distribution in the middle of the beam for the slow speed traverse; (c) effect of prior Austenite grain size on the phase transformation from austenite into bainite: finite element results for cooling rate of 3 ˚{TTP}730 C/sec 4.
Comparison between results for ASTM PAGS number 0 and 3 in Fig. 1c shows that the change in the PAGS can change the nature of the transformation sigmoidal function.
Online since: October 2018
Authors: Surapich Loykulnant, Paweena Prapainainar, Peerapan Dittanet, Wichudaporn Seangyen, Pongdhorn Sae-Oui
Introduction
Rice husk (RH) is the outermost layer of a paddy grain which can be separated from rice grain by milling process.
The functional groups of the synthesized and treated silica nanoparticles were analyzed by Fourier transform infrared spectroscopy (FTIR, Spectrum 400 FT-IR/FT-NIR Spectrometer/PerkinElmer) at room temperature over the wave number range from 4000 - 550 cm-1.
The functional groups of the synthesized and treated silica nanoparticles were analyzed by Fourier transform infrared spectroscopy (FTIR, Spectrum 400 FT-IR/FT-NIR Spectrometer/PerkinElmer) at room temperature over the wave number range from 4000 - 550 cm-1.