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Online since: September 2008
Authors: Guggi Kofod
The symmetry properties of these conditions leads to
simplifications in the analytical expressions describing the deformation under actuation, and will
therefore also simplify the discussion of the influence of the mechanical properties of a material
upon actuation properties, which is the topic of this paper.
As discussed by Wissler and Mazza [11], the VHB 4910 material has probably changed its composition since it was first used in 2000 [1], which would affect hyper-elastic properties.
The effects on dielectric properties were also discussed in [11].
The mechanical properties of the electrodes have been disregarded entirely, however, the mechanical response of the electrodes can be boxed with that of the dielectric elastomer into a composite stress-strain behaviour of the actuator as a whole [3].
and 1 are identical apart from a factor '1x .
As discussed by Wissler and Mazza [11], the VHB 4910 material has probably changed its composition since it was first used in 2000 [1], which would affect hyper-elastic properties.
The effects on dielectric properties were also discussed in [11].
The mechanical properties of the electrodes have been disregarded entirely, however, the mechanical response of the electrodes can be boxed with that of the dielectric elastomer into a composite stress-strain behaviour of the actuator as a whole [3].
and 1 are identical apart from a factor '1x .
Online since: November 2013
Authors: Mohsen Izadinia, Arash Khosravi, Amir Mahdi Moslemi, Mohaddeseh Heydari
Nano Silica is high pozzolanic material which is used recently in concrete to improve its mechanical properties.
Introduction Several factors are important in durability of concrete structure, such as permeability of concrete, concentration of sulfate and type of structure [1].
This is an important factor in permeability of concrete specimens which affects the resistance of concrete toward the sulfate attack[4].
Physical properties of Nano Silica Phase Specific gravity Ave particles size (nm) pH Electrical conductivity (mS/cm) Nano-SiO2 Clear liquid (colloid) 1.10 2.1 9-11 3.47 The properties of fine and coarse aggregate which is used in this study are shown in Table 2.
Properties of aggregate in concrete specimens Aggregate Max size (mm) Finesse Module (FM) Density(gr/cm3) Water absorption (%) Gravel 19 4.96 2.58 1.74 Sand 2.56 2.3 Preparation and testing procedure.
Introduction Several factors are important in durability of concrete structure, such as permeability of concrete, concentration of sulfate and type of structure [1].
This is an important factor in permeability of concrete specimens which affects the resistance of concrete toward the sulfate attack[4].
Physical properties of Nano Silica Phase Specific gravity Ave particles size (nm) pH Electrical conductivity (mS/cm) Nano-SiO2 Clear liquid (colloid) 1.10 2.1 9-11 3.47 The properties of fine and coarse aggregate which is used in this study are shown in Table 2.
Properties of aggregate in concrete specimens Aggregate Max size (mm) Finesse Module (FM) Density(gr/cm3) Water absorption (%) Gravel 19 4.96 2.58 1.74 Sand 2.56 2.3 Preparation and testing procedure.
Online since: November 2014
Authors: Sufizar Ahmad, Syazwan Liyana Sulaiman, Hariati Taib
The reduction of chromium (Cr(VI)) ions by both of PVA/CS/(nano and micro)-SiO2) beads, as evaluated by the reduction duration taken were studied by photocatalytic process in which factors of SiO2 powders size and pH of reducing environment were varied.
Glutaraldehyde serves as chemical modification/cross-linking agent that increases the reduction properties while preventing the dissolution of CS in strong acids and improving the mechanical strength of CS [18-21].
Thus, this supports the better performance of PVA/CS/nano-SiO2 beads in photocatalytic properties.
Wang, Adsorption properties of N-succinyl-chitosan and crosslinked N-succinyl-chitosan resin with Pb(II) as template ions, Sep.
Wang, Adsorption properties of carboxymethyl-chitosan and cross-linked carboxymethyl-chitosan resin with Cu(II) as template, Sep.
Glutaraldehyde serves as chemical modification/cross-linking agent that increases the reduction properties while preventing the dissolution of CS in strong acids and improving the mechanical strength of CS [18-21].
Thus, this supports the better performance of PVA/CS/nano-SiO2 beads in photocatalytic properties.
Wang, Adsorption properties of N-succinyl-chitosan and crosslinked N-succinyl-chitosan resin with Pb(II) as template ions, Sep.
Wang, Adsorption properties of carboxymethyl-chitosan and cross-linked carboxymethyl-chitosan resin with Cu(II) as template, Sep.
Online since: June 2012
Authors: Ya Di Liu
Bamboo mildew fungi feed on the material without cell wall, so it has minor hazards to the cell and also does not affect the strength of bamboo.
These photo-electrons and holes have superior redox capacity which can kill many bacteria and viruses, and they also are qualified by wide range of antibacterial spectrum, good heat resistance, excellent antibacterial effect and so on, which may significantly improve the anti-bacterium and anti-mold properties of material.
At the same time, they characterize the form and structure of TiO2 by using NMR, FESEM, XRD and EDAX, and focus on studying the influence of temperature on the morphology, the crystal form and the anti-bacterium and anti-mold properties of TiO2 film.
The future research direction of the anti-mold and anti-corrosion of bamboo timber will focus on the development of new, green, highly effectively and inexpensive mold preservatives, which mainly includes anti-mold and anti-corrosion effect, durability, cost, environmental protection, anti-loss, the influence on the physical and mechanical properties of plates and so on.
[9] Song Ye, Wu Yiqiang, Yu Yan, Effect of Titanium Dioxide on Color Stability and Mildewproof Properties of Bamboo [J].
These photo-electrons and holes have superior redox capacity which can kill many bacteria and viruses, and they also are qualified by wide range of antibacterial spectrum, good heat resistance, excellent antibacterial effect and so on, which may significantly improve the anti-bacterium and anti-mold properties of material.
At the same time, they characterize the form and structure of TiO2 by using NMR, FESEM, XRD and EDAX, and focus on studying the influence of temperature on the morphology, the crystal form and the anti-bacterium and anti-mold properties of TiO2 film.
The future research direction of the anti-mold and anti-corrosion of bamboo timber will focus on the development of new, green, highly effectively and inexpensive mold preservatives, which mainly includes anti-mold and anti-corrosion effect, durability, cost, environmental protection, anti-loss, the influence on the physical and mechanical properties of plates and so on.
[9] Song Ye, Wu Yiqiang, Yu Yan, Effect of Titanium Dioxide on Color Stability and Mildewproof Properties of Bamboo [J].
Online since: September 2016
Authors: Zhao Yang, Guang Xu Wang, Xue Xuan Xu, Xiao Long He, Jian Ning Lu
These cracks are the most fatal factors that affect the mechanical properties of bi-metal products.
The mechanical properties of the material containing plate like crack are bad.
It was found that the samples with curved interface have better mechanical properties.
And T6 heat treatment was found improved the mechanical properties very much.
It results in a very much increase of the mechanical properties of the bi-metal part.
The mechanical properties of the material containing plate like crack are bad.
It was found that the samples with curved interface have better mechanical properties.
And T6 heat treatment was found improved the mechanical properties very much.
It results in a very much increase of the mechanical properties of the bi-metal part.
Online since: February 2013
Authors: Janusz Pobędza, Andrzej Sobczyk
Microscopic picture of columnar nanostructured coating [5]
Fig. 4 illustrates friction properties, taken from friction tests [5], after 105 fretting cycles for steel with CNC and DLC coatings.
Cylinder friction force is varied and depends on few factors like: cylinder velocity, pressure and temperature.
The first stage of research were dedicated to determine properties of singular cartridge valve 2-URES-6 installed in two way body.
The use of water reduces pressure losses by half, positively affecting energy efficiency of the high pressure water hydraulic system.
Covering the inside surface of the cylinder and the piston and piston rod surface confirms the protective properties of novel coatings against corrosion of steel parts, together with acceptable values of hydro-mechanical efficiency, not different from characteristics of oil actuators.
Cylinder friction force is varied and depends on few factors like: cylinder velocity, pressure and temperature.
The first stage of research were dedicated to determine properties of singular cartridge valve 2-URES-6 installed in two way body.
The use of water reduces pressure losses by half, positively affecting energy efficiency of the high pressure water hydraulic system.
Covering the inside surface of the cylinder and the piston and piston rod surface confirms the protective properties of novel coatings against corrosion of steel parts, together with acceptable values of hydro-mechanical efficiency, not different from characteristics of oil actuators.
Online since: April 2007
Authors: Lan Yi Wang, Cheng Xiang Lu, Guo Yi Tang
All these superior electrical properties are attributed to the CS powder, which makes more uniform do-
pant distribution throughout the multilayer ZnO varistors.
The uniformity in the distribution of additives is an important factor to influence the figures of merit of ZnO varistors.
Electrical properties.
It is well known that physical properties of ZnO varistor materials depend strongly on the microstructure, including grain size and boundary characteristics.
The chemical homogeneity of specific dopants and the ceramic micro- structure play an important role in the electrical properties of varistors.
The uniformity in the distribution of additives is an important factor to influence the figures of merit of ZnO varistors.
Electrical properties.
It is well known that physical properties of ZnO varistor materials depend strongly on the microstructure, including grain size and boundary characteristics.
The chemical homogeneity of specific dopants and the ceramic micro- structure play an important role in the electrical properties of varistors.
Online since: September 2014
Authors: Samah B. Daffalla, Hilmi Mukhtar, Maizatul Shima Shaharun
The physiochemical properties of the developed adsorbents were evaluated.
To upgrade or improve the adsorption properties of the RH, thermal treatment of rice husk has been established.
Factors affecting sorption, such as contact time and pH were investigated.
The kinetics of the adsorption of phenol was studied in batch experiment by using a GFL mechanical shaker (3017).
In order to compare the textural properties of adsorbents, the parameter obtained from BET surface area, pore volume and pore diameter are tabulated in Table 2.
To upgrade or improve the adsorption properties of the RH, thermal treatment of rice husk has been established.
Factors affecting sorption, such as contact time and pH were investigated.
The kinetics of the adsorption of phenol was studied in batch experiment by using a GFL mechanical shaker (3017).
In order to compare the textural properties of adsorbents, the parameter obtained from BET surface area, pore volume and pore diameter are tabulated in Table 2.
Online since: February 2013
Authors: Lin Lv, Xiao Jiao Zuo, Huan Liu, Hong Jun Huang, Xiao Guang Yuan
The diffusion layer of such an interface, will on one hand, increase the property of the composite material, and on the other hand, cause some deterioration of properties.
Such composite material needs to have not only good composite strength, but also good electrical conductivity and mechanical properties.
However, the diffusion heat treatment will cause the diffusion layer to appear, and it has a multiple copper aluminum inter-metallic compounds, that will affect the strength of binding and the electrical property [4].
Study on cold-rolling of aluminum-coated magnesium composite plates and the properties of interface[D].
Influence of deformation processing on mechanical and conductivity properties of Cu-Fe composites.
Such composite material needs to have not only good composite strength, but also good electrical conductivity and mechanical properties.
However, the diffusion heat treatment will cause the diffusion layer to appear, and it has a multiple copper aluminum inter-metallic compounds, that will affect the strength of binding and the electrical property [4].
Study on cold-rolling of aluminum-coated magnesium composite plates and the properties of interface[D].
Influence of deformation processing on mechanical and conductivity properties of Cu-Fe composites.
Online since: September 2011
Authors: Liu Min, Jun Ying Tian, Mei Yan Liu
But wool raw materials can not meet the demand of textile industry, wool fiber production is influenced by many factors such as geographic conditions.
Sodium alginate produced by Shanghai cognis chemical Co., LTD Warmth retention test Warmth retention is tested according to GB/T11048-89《Testing method for warmth retention property》with ASTM plate-type fabric warm apparatus.
Dyeing properties of wool-like fabric improved also.
How Alkali Treatments Affect Selected Properties Of Polyester, Cotton and Polyester/Cotton Fabrics.
China Textile Leader.2009,(1):77~80 [5] Matsudaira Mitsuo,Matsui Masao,Changes in the Mechanical Properties and Fabric Handle of Polyester-fibre Fabrics Through the Finishing Stages[J],Journal of the Textile Institute,1992,83(1):144-155 [6] Sheth Geeta N., Musale Aparna A.
Sodium alginate produced by Shanghai cognis chemical Co., LTD Warmth retention test Warmth retention is tested according to GB/T11048-89《Testing method for warmth retention property》with ASTM plate-type fabric warm apparatus.
Dyeing properties of wool-like fabric improved also.
How Alkali Treatments Affect Selected Properties Of Polyester, Cotton and Polyester/Cotton Fabrics.
China Textile Leader.2009,(1):77~80 [5] Matsudaira Mitsuo,Matsui Masao,Changes in the Mechanical Properties and Fabric Handle of Polyester-fibre Fabrics Through the Finishing Stages[J],Journal of the Textile Institute,1992,83(1):144-155 [6] Sheth Geeta N., Musale Aparna A.