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Online since: October 2018
Authors: M.A. Mikheenkov, O.Yu. Sheshukov, D.A. Lobanov
In our opinion, in the works [10-17] the study directions are secondary production factors, since in these aggregates only one component of slags, iron-containing, is affected.
The chemical composition of variable factors in the experiment is presented in table 2.
Factors variability interval The factor type Variability interval Lower Upper Code*, ea Nat.**, mass.% Code, ea Nat., mass.% LF slag content 0.17 17.00 0.67 67.00 EAF slag content 0.17 17.00 0.67 67.00 СаСО3 content 0.17 17.00 0.67 67.00 * - coded value, **- natural value The raw mix components were mixed in accordance to the experiment plan, melted and then slowly cooled.
Phase composition of clinker made of slag Phase 3CaO·SiO2 2CaO·SiO2 3CaO·Al2O3 MgO Other [mass. %] 51.3 30.1 10.7 3.8 4.1 Despite the fact that the iron-containing phase 4CaO·Al2O3·Fe2O3 in the clinker was not found, due to the presence in the clinker of other hydraulically active phases, it showed good physical and mechanical properties.
Egiazaryan, Optimization of phase composition of high-calcium-content slag for stabilization and ob-taining of hydraulic properties.
Online since: May 2013
Authors: I.A. Leenson, J. Beckman, A.A. Krutikova, A.A. Ischenko
Efficiency and quality of SPM depend on many factors.
The efficiency and the quality of SPM depended on many factors.
These optical properties depend on a number of factors, such as structural defects and impurities, phase state and several other conditions [123—125].
Numerous examples presented in the monograph [154] show that with decreasing particle size, nano-objects affect many different physical and chemical properties.
In particular the properties affected can include color, solubility, material strength, electrical conductivity, magnetic properties, mobility (including in the environment and within the human body), chemical, and biological activity [149].
Online since: April 2011
Authors: Yu Qiang Han, Bian Guo, Fei Zhou Li
Guo1,c 1 Department of Mechanical Engineering, Baoji University of arts and science, Baoji 710016, China ahanyuqiang62@163.com, blfz1010@sohu.com, cgguo2006@126.com Key words: industrial overlock machine, multiple-bar linkage, kinematic analysis, the method of successive approximation of link length Abstract.
Introduction The differential feed mechanism of overlock machine have to carry out complicated movements to suit a wide variety of elastic properties of different fabrics, by which the application range of the machine could be expanded.
Feeding is only affected by needle range.
The mainly factors which can affect that is the needle spacing mechanism.
Chinese Journal of Mechanical Engineering, Vol. 17(1981) , p. 68-76.
Online since: August 2013
Authors: Xue Peng Li, Ai Lun Wang, Yong Lei Su
Then, performance degradation process of gas turbine system for different factors was analyzed.
The results showed that: (1) An equivalent method on contact stiffness of turbine interface was presented, pretightening force is reducing as the result of stress relaxation, that affects contact stiffness of turbine interface
Changes of Material Properties and Life Management of Steam Turbine Components under Long Term Service[J].
Contact Stiffness of Rough Mechanical Joint Surface[J].
Modern mechanical dynamics and engineering application[M].
Online since: January 2012
Authors: Pan Pan Zhang, Li Lei Miao, Peng Cheng Xie, Wei Min Yang
Numerical simulation of differential injection molding based on Moldex 3D Lilei Miaoa,Pengcheng Xieb, Panpan Zhangc and Weimin Yangd College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China amiaoxinyu@163.com, bxiepengcheng@gmail.com, cpeterpan9152@126.com, dyangwm@mail.buct.edu.cn Keywords: differential injection molding; melt pump; filling length; theoretical basis Abstract.
Introduction Kim[2] carried out a study on the effect of thermo-physical properties, relative humidity and stiffness on the warpage of a PMMA diffusing plate modified with glass fibers in a direct-lit backlight unit of a liquid crystal display.
Conclusion This study is to find the factor affecting the filling volume during the filling stage.
The single factor experimental simulation shows that the influence degree of process parameters on filling volume can be ordered in melt temperature > mold temperature.
China Mechanical Engineering. 13 (2002) 592-596
Online since: August 2013
Authors: Ai Feng Zhang, Yang Liu, Xiang Li
Because of its mechanical characteristics between the continuous girder bridge and cable-stayed bridge, it is also known as "partial cable-stayed bridge".
While modeling, three element types are adopted on the basis of mechanical characteristics of low-pylon cable-stayed bridge and analysis on different element types.
This thesis adopts Changshan Bridge as engineering background, to analyze two geometric nonlinear influence factors including cable sag effect and large deformation effect.
Gravity sag deformation is additional deformation under the sag effect, and the elastic deformation is only related to material properties.
Equivalent modulus of elasticity will be affected by three factors including material deformation, the variations of the structural elongation and sag.
Online since: December 2014
Authors: Wiesław Zwierzycki, Kasper Górny, Przemysław Tyczewski
Tribological properties of mixtures containing new ecological refrigerants with compatible lubricants should be examined.
Hence, the viscosity and solubility of refrigerant–lubricant mixtures are the important factors in determining their suitability for specific applications, and in particular, for predicting reliable oil return.
Table 1 shows typical properties of testing oils.
Properties of testing oils Oil type Property Viscosity [mm2/s] Viscosity index Flash point [oC] Pour point [oC] 40 oC 100 oC Synthetic POE 32 5.8 115 236 -48 Synthetic POE 68 8.7 95 230 -36 The refrigeration oil should show good miscibility with refrigeration gas in order to achieve compressor lubrication and oil recovery in the refrigeration cycle.
Attempts should be made to examine tribological properties of mixtures of new ecological refrigerants with compatible lubricants.
Online since: March 2016
Authors: Ran Ding, Ai Min Zhao, Chao Zhi, Jian Guo He, Yi Fei Gong
In the circumstance of two-body abrasion, hardness was an important factor, the property of wear resistance enhanced while the hardness increased except for TM steel.
It greatly affects the reliability and service life of the metal parts.
Wear is a complex process, involving many factors, such as counterpart, pressure, temperature, surface finish, lubrication and corrosion [1].
Therefore, the hardness is one of the important factors for the wear resistance in the present study.
Surface nanocrystallization of AISI 304 stainless steel induced by surface mechanical attrition treatment[J].
Online since: November 2010
Authors: Saeid Hadidi-Moud, P. Akbarzadeh
In metals without the FCC microstructure the motion of dislocation is affected by the thermal agitation of the atoms.
This is followed by introducing the Weibull distribution function in terms of stress intensity factor that is widely used in literature for brittle fracture prediction.
(1) Where E=206 GPa and v=0.3 were the specific material properties within the range of temperatures.
We set Kmin equal to zero, invariant of material flow properties, crack-front configuration, and temperature.
But Weibull exponent is dependant on geometry [6], temperature and maybe other factors.
Online since: January 2006
Authors: Hsiang Chen Hsu, Wei Mao Hung
This paper demonstrates the thermal-induced mechanical problems resulted from various temperature profiles of reliability test for a system-in-package (SIP) assembly process.
The flip-chip specimen was taken and the Moiré Interferometry was used as methodology to verify the developed Finite Element Model and material property.
The flip chip specimen was taken and the Moiré Interferometry was used as methodology to verify the developed Finite Element Model and material property [3].
This implies that passive SMD will not affect the thermal-induced stress/strain in all SIP plastic packages.
For thermal design, it is found that passive SMDs will not affect the thermal-induced stress/strain and FC chip is placed at the center of package will result in decreasing in the warpage in CSP solder bumps.
Showing 19541 to 19550 of 26166 items