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Online since: March 2008
Authors: Jean Bernard Vogt
In addition, it has been demonstrated that
DSS combined very good mechanical properties (strength, ductility, toughness…) and corrosion
resistance (particularly in the case of chloride corrosion), in a wide variety of applications.
However the relationship between microstructure and mechanical properties is most of time difficult to be predicted.
It is therefore of interest to know if under cyclic loading similar restricting properties exist and how to reduce them.
However, the mechanical properties of 475°C aged DSS are well known to be ferrite dependent.
Conclusions Duplex stainless steels exhibit a lot of interesting properties which to be improved requires deep metallurgical analysis.
However the relationship between microstructure and mechanical properties is most of time difficult to be predicted.
It is therefore of interest to know if under cyclic loading similar restricting properties exist and how to reduce them.
However, the mechanical properties of 475°C aged DSS are well known to be ferrite dependent.
Conclusions Duplex stainless steels exhibit a lot of interesting properties which to be improved requires deep metallurgical analysis.
Online since: December 2016
Authors: Yoshitaka Umeno, Atsushi Kubo
Insights about a microscopic-level structure are particularly necessary because it is thought that a strong and complex correlation exists between mechanical properties and the molecular structure of a polymer.
Such knowledge can provide a general guideline to design new structural polymers of excellent mechanical properties.
There are several important factors which are expected to strongly affect the mechanical properties, e.g., temperature and molar mass.
However, these factors have not been investigated in the previous study.
Table 2: Properties of prepared simulation cells.
Such knowledge can provide a general guideline to design new structural polymers of excellent mechanical properties.
There are several important factors which are expected to strongly affect the mechanical properties, e.g., temperature and molar mass.
However, these factors have not been investigated in the previous study.
Table 2: Properties of prepared simulation cells.
Online since: April 2012
Authors: Yi Du Zhang, Qiong Wu, Xiang Sheng Gao, Lin Fang
State Key Laboratory of Virtual Reality Technology and Systems, School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China
2.
Tool deflection is one of the important influencing factors for surface roughness and surface integrity of work piece in cutting process.
The main factors are the tool geometry, the cutting condition and the work piece properties.
Tool deflection can affect the acceptable dimension accuracy of finishing.
The isotropic material properties are input according to different cutter material.
Tool deflection is one of the important influencing factors for surface roughness and surface integrity of work piece in cutting process.
The main factors are the tool geometry, the cutting condition and the work piece properties.
Tool deflection can affect the acceptable dimension accuracy of finishing.
The isotropic material properties are input according to different cutter material.
Online since: July 2014
Authors: M.J. McCarthy, Noor Azline Mohd Nasir
The microstructure and mechanical properties of blended cements hydrated at various temperatures.
Mechanical activation of granulated blast furnace slag and its effect on the properties and structure of portland slag cement.
Concrete : microstructure, properties, and materials, McGraw-Hill
Evolution of mechanical properties of concrete containing ground granulated blast furnace slag and effects on the scaling resistance test at 28 days.
Effects of metakaolin and silica fume on properties of concrete.
Mechanical activation of granulated blast furnace slag and its effect on the properties and structure of portland slag cement.
Concrete : microstructure, properties, and materials, McGraw-Hill
Evolution of mechanical properties of concrete containing ground granulated blast furnace slag and effects on the scaling resistance test at 28 days.
Effects of metakaolin and silica fume on properties of concrete.
Online since: February 2013
Authors: Shu Fa Chen, Cheng Long Feng, Jin Song Chen, Jin Yang
But it is should be noted that material wear is a systematic behavior, there are many factors affecting the wear behavior, such as material microstructure and hardness, ambient temperature, applied load, etc.
,among of these, the applied load is an important factor affecting the material wear[8].
Tribological properties of laser cladding high-temperature self-lubrication composite coatings [J].
Microstructure and tribological properties of laser clad CaF2/Al2O3 self-lubrication wear-resistant ceramic matrix composite coatings [J].
Microstructure and tribological properties of laser cladding Ni45-CaF2-WS2 self-lubrication coating [J].
,among of these, the applied load is an important factor affecting the material wear[8].
Tribological properties of laser cladding high-temperature self-lubrication composite coatings [J].
Microstructure and tribological properties of laser clad CaF2/Al2O3 self-lubrication wear-resistant ceramic matrix composite coatings [J].
Microstructure and tribological properties of laser cladding Ni45-CaF2-WS2 self-lubrication coating [J].
Online since: June 2012
Authors: Shan Wen Zhang, Jian Xin Ying
It is presented that not only blaze angle but apex angle affect diffraction efficiency.
Blaze angle is regarded as a decided factor for diffraction efficiency which corresponds to blaze wavelength one to one [5,6].
Blaze angle is the major factor of diffraction efficiency that decides the distribution of major energy, but another parameter of triangle groove grating, apex angle also affects diffraction efficiency to extent, both blaze angle and apex angle decides diffraction efficiency at the same time.
Electromagnetic theory of gratings Because of taking into account the vectorial property of light, electromagnetic theory of gratings is more suitable to design diffraction gratings in magnitude of wavelength than scalar diffraction theory.
Beijing: Mechanical industry press. 1986.
Blaze angle is regarded as a decided factor for diffraction efficiency which corresponds to blaze wavelength one to one [5,6].
Blaze angle is the major factor of diffraction efficiency that decides the distribution of major energy, but another parameter of triangle groove grating, apex angle also affects diffraction efficiency to extent, both blaze angle and apex angle decides diffraction efficiency at the same time.
Electromagnetic theory of gratings Because of taking into account the vectorial property of light, electromagnetic theory of gratings is more suitable to design diffraction gratings in magnitude of wavelength than scalar diffraction theory.
Beijing: Mechanical industry press. 1986.
Online since: April 2022
Authors: Luisa Molari, Antonio Maria D'Altri, Giovanni Castellazzi, Stefano de Miranda, Francesco Ubertini, Nicolò Lo Presti
Accordingly, the effects of layers with different properties on the crystallized salt distribution and damage pattern are highlighted.
Indeed, the presence of material layers with different hygroscopic and mechanical properties can have a significant effect on the moisture transport, salt crystallization, and damage distribution, significantly affecting the environmental degradation phenomenon.
A simple benchmark is analyzed to highlight the effects of layers with different properties on the crystallized salt distribution and damage pattern.
Mechanical model.
To this aim, the physical properties of a cementitious matrix made of Portland cement binder and quartz sand, characterized according to [1], are adopted for Layer 2.
Indeed, the presence of material layers with different hygroscopic and mechanical properties can have a significant effect on the moisture transport, salt crystallization, and damage distribution, significantly affecting the environmental degradation phenomenon.
A simple benchmark is analyzed to highlight the effects of layers with different properties on the crystallized salt distribution and damage pattern.
Mechanical model.
To this aim, the physical properties of a cementitious matrix made of Portland cement binder and quartz sand, characterized according to [1], are adopted for Layer 2.
Heat Build-Up and Fire Performance of Wood-Polypropylene Composites Containing Recycled Mineral Wool
Online since: November 2013
Authors: Olli Väntsi, Timo Kärki
Box 20, 53851 Lappeenranta, Finland
aolli.vantsi@lut.fi, btimo.karki@lut.fi
Keywords: Wood plastic composite, Mineral wool, Recycling, Fire properties, Heat build-up
Abstract.
It has been shown that inorganic mineral fillers can improve the fire properties of WPCs[14].
The optical properties of composites are a key factor in their heat build-up behavior [17].
Conclusions The addition of recycled mineral wool into wood plastic composites affected the heat build-up and fire properties of composites.
Optical properties, mainly a* and L* values of CIE L*a*b* color system, were found to be the main factors affecting the heat build-up of the studied composites.
It has been shown that inorganic mineral fillers can improve the fire properties of WPCs[14].
The optical properties of composites are a key factor in their heat build-up behavior [17].
Conclusions The addition of recycled mineral wool into wood plastic composites affected the heat build-up and fire properties of composites.
Optical properties, mainly a* and L* values of CIE L*a*b* color system, were found to be the main factors affecting the heat build-up of the studied composites.
Online since: November 2011
Authors: R. Ganesh Narayanan, Saravana Kumar Gurunathan, Susanta Kumar Dey
An L27 orthogonal array was selected for conducting simulations at three levels for six factors.
Schematic representation of controllable factors Design of Experiments (DOE) Table 1.
The six factors considered at three levels are shown in Table 2 for DP590 Steel TWBs.
Evaluating TWB tensile properties Table 3.
Values of the six TWB factors are also provided.
Schematic representation of controllable factors Design of Experiments (DOE) Table 1.
The six factors considered at three levels are shown in Table 2 for DP590 Steel TWBs.
Evaluating TWB tensile properties Table 3.
Values of the six TWB factors are also provided.
Online since: July 2011
Authors: Yan Chen, M.M. Zhang, Y.J. Li, Z.Q. Liu, G.B. Liao
Based on the above situation, this paper proposes to produce composite magnetic materials of high properties with rapid sintering etc. finishing process through analysing and assessing the magnetism and two-phase microstructure and constituents so that the magnetic abrasive particles with best magnetism can be developed and the key technology for manufacturing new composite materials can be achieved.
Generally speaking, iron will not be melt but molten and this provides good conditions for aluminium oxide being embedded into its surface, it therefore concluded that temperature control is a critical factors in making magnetic abrasive by sintering process.
The ratio of reduced iron and abrasive particle size is another critical factor affecting magnetic abrasive finishing, particle size is better at a ratio of 5:3.
Thirdly, the sintering time affects magnetic abrasive finishing.
Seeing from Testwork 1, it is distributed in layers from inner to outer, besides the overflowing of iron, it also attributes to the time of sintering, theoretically speaking , the iron in the middle layer can overflow, the iron in the core should also flow towards the middle layer, there should be the least Fe in the core, but the result is just opposite, it shows that the billet is not thoroughly sintered during sintering process, therefore sintering time is also a critical factor affecting even distribution of abrasive materials.
Generally speaking, iron will not be melt but molten and this provides good conditions for aluminium oxide being embedded into its surface, it therefore concluded that temperature control is a critical factors in making magnetic abrasive by sintering process.
The ratio of reduced iron and abrasive particle size is another critical factor affecting magnetic abrasive finishing, particle size is better at a ratio of 5:3.
Thirdly, the sintering time affects magnetic abrasive finishing.
Seeing from Testwork 1, it is distributed in layers from inner to outer, besides the overflowing of iron, it also attributes to the time of sintering, theoretically speaking , the iron in the middle layer can overflow, the iron in the core should also flow towards the middle layer, there should be the least Fe in the core, but the result is just opposite, it shows that the billet is not thoroughly sintered during sintering process, therefore sintering time is also a critical factor affecting even distribution of abrasive materials.