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Online since: September 2018
Authors: Leonid M. Usepyan, Elizaveta O. Lotoshnikova, Valeriya N. Telegina, Elzara O. Tsybenko
If in the coating operation dynamic impacts (rap, rap with abrasion, etc.) begin to prevail, and they are getting stronger and more influence of aggressive factors (e.g., use of antifreeze), with intensive use premature products failure is possible.
The influence of grain composition of fillers on properties of hard-pressed concrete was estimated at the first stage.
On the one hand, the increase in the proportion of angular particles has a positive effect on the concrete strength, but reduces its durability, on the other hand, significantly increases the internal friction when compacting a rigid mixture and this negatively affects the homogeneity of the concrete properties.
Any additional fillers treatment (surface activation, enrichment) will improve the properties of hardened concrete.
Usepyan, The Effect of prescription and technological factors on the properties of fine-grained hard-pressed concrete, Don Engineering vestnik.1 (2018).
Online since: October 2007
Authors: Fernand D.S. Marquis
The goals are to implement designs to fully mimic the properties of carbon nanotubes on larger scales for enhanced thermal and electrical management in addition to controlled strength and toughness.
The electrical properties of carbon nanotubes vary from those typical of semiconducting to those typical of metallic conductors depending on the type and chirality of the CNT.
The mechanical properties of carbon nanotubes are expected to equal of exceed the expected values of perfect materials.
The focus of this research is the application of robust carbon nanoparticles with superior thermal, electrical and mechanical properties and well established physical and chemical stability in order to design and manufacture new classes of very novel, unique and efficient carbon nanotube nanocomposites, with much lower additive concentrations.
With this model we can explore various factors that can affect thermal conductivity of nanofluids such as aspect ratio (L/D), decoupled orientation effects (along nanotube axis, Kl, transverse to nanotube Ktrans), along with overall volume loading.
Online since: September 2007
Authors: Jindřich Musil, P. Zeman
Unique properties of these new hard composites make enable to realize new applications not mastered so far.
This article reports on structure, microstructure, surface morphology, mechanical properties and high-T oxidation resistance of the a-Si3N4/MeNx composites with a high (≥50 vol.%) content of aSi3N4 phase.
This is a reason, why the nanocomposite films lose their unique properties at T>Tcr.
The effect of these three factors on the film crystallization is further illustrated on the crystallization of Zr-Si-N films during their thermal annealing performed under different conditions.
Musil: Physical and mechanical properties of hard nanocomposite films prepared by reactive magnetron sputtering, Chapter 10 in the book "Nanostructured Hard Coatings", A.
Online since: May 2004
Authors: Jérôme Chevalier, Gilbert Fantozzi, J.S. Moya, J.F. Bartolomé, J. Requena, Ramon Torrecillas, S. Deville, L.A. Díaz
By tailoring the microstructure, it is possible to get better mechanical properties without any thermal degradation sensitivity.
The alumina grains elongation will further improve the mechanical properties.
Mechanical properties These composites show [3] an increase of crack resistance compared to the composites processed with a classical route (powder-mixing).
Conclusion Microstructures, mechanical properties and thermal stability of zirconia toughened alumina nanocomposites have been studied.
These advanced composites exhibit higher mechanical properties than both monolithic alumina and zirconia.
Online since: October 2022
Authors: Ya Nan Li, Zhi Hui Li, Qing Hong Wen, He Yin, Kai Wen
Generally speaking, after casting, homogenization treatment, and plastic deformation, a large number of second phases are distributed on the aluminum alloy matrix, and these second phases are the main factor affecting the comprehensive properties of the alloy.
The factors affecting the dissolution of the second phase during the solution treatment of Al-Zn-Mg-Cu alloys include solution temperature, solution time, quenching transfer time, etc.
Among them, the temperature and time of solution treatment are the main factors [8].
Chen, Evolution of second phases and mechanical properties of 7075 Al alloy processed by solution heat treatment, Trans.
Khang Chuan, Effect of a two-step solution heat treatment on the microstructure and mechanical properties of 332 aluminium silicon cast alloy, Mater.
Online since: November 2013
Authors: Mohd Sallehuddin Yusof, Muhamad Nor Nodin
S.YUSOF2,b 1,2Faculty of Mechanical and Manufacturing Engineering Universiti Tun Hussein Onn Malaysia, Batu Pahat, Johor,Malaysia.
It will be investigated here and any important parameter will be affected the printing quality will be determined.
In term of surface properties of PDMS, it can be readily modified using combination of oxygen plasma treatment and formation of Self Assembled Monolayers (SAMs) [5].
Besides that, it shrinks by a factor of -1% upon thermal curing, and it can be readily swelled by nonpolar solvents such as toluene and hexane [5].
The roller speed, adhesion factors of PDMS, friction between PDMS and roller, ink viscosity, annilox roller engraving, and subtract are important factors might be affect the performance of PDMS as a plate for flexography printing.
Online since: August 2011
Authors: Ji Wen Li, Ai Qin Wang, Jing Pei Xie, Ke Feng Zhang, Dou Qin Ma, Di Xin Yang, W.Y. WANG
The mechanical property can be influenced remarkably by a few non-metallic inclusions [1].
Main reason of the steel crack generation is the inclusion in the steel which also has the prodigious influence for quality and mechanical property of steel.
In non-metallic inclusions, the sulfides are the source of cracks generally, and the cracks in steel are enlarged when the sulfides are combined with other factors.
The second sulfide is very like the bar and distributes between the dendrite, which is harmful to mechanical properties of the steel.
This inclusion influence on steel mechanical properties is between the first and second kind inclusions [8-9].
Online since: September 2013
Authors: Yan Pang, Zhao Peng Zhu
Its production process is complex, which affects its promotion.
Table 1, Compressive and tensile strength of various materials Kind Average compressive strength(MP) Average tensile strength Bamboo 48.7 208.2 Wood 44.4 107.3 Plastic(density 1.3g/㎡) 70 45 There are plenty of factors affecting the selection of border scheme.
Layer A is the general objective with best comprehensive efficiency; layer B includes three criteria for general objective realization, that is economic indicator, technological indicator, social indicator; layer C is index layer, including nine indicators which affecting the general objective and criterion realization.
Mechanical Properties Of Phyllostachys Pubescens (Journal of Central South University of Forestry & Technology, China 2012)
The Mechanical Properties & Mechanical Model of Foam(PLASTICS SCL. & TECHNOLOGY, China 2003)
Online since: January 2013
Authors: Ke Man, Ju Wang, Rui Su, Yong Qiang Zhu
The rock permeability is influenced by the stress on the rock, the aperture width, roughness, filling and other factors.
All these factors must be considered carefully and should not be ignored.
The joint physical and mechanical properties are defined by the two parameters.
The dependence of fracture mechanical and fluid flow properties on fracture roughness and sample size[J].
[20] J.Zhao and E T Brown, Hydro thermo mechanical properties of joints in the Carnmenellis granite [J].
Online since: November 2012
Authors: Robert V. Goldstein, N.M. Osipenko
Some Mechanical Models of Chemical-mechanical Polishing Processes R.
Empirical data related to specific variants of the process, as a rule, represent the property of the appropriate companies.
The CMP parameters and results depend on mechanical properties of contacting bodies such as stiffness, hardness and compressibility.
The erosion model is aimed to combine the chemical affects modeled at the abrasive particles scale with the processes at the scale of the whole polished surface [7].
Note, that to estimate the crack opening one can neglect by a difference of deformation properties of contacting materials loading to some tangential forces.
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