Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: August 2015
Authors: Hardev Singh Virk, Divya Singh, B. Bhattacharya
Polymers, in addition to their economical superiority, possess a large variety of favorable physical, chemical and mechanical properties.
Cross-linking occurs in Teflon after irradiating it with gamma rays which improves its mechanical properties [58].
Chen et al. [61] modified the mechanical properties of polyimide by bombarding it with 2 MeV Si ions.
Zihlif, Examination of optical properties and estimation of mechanical energies of irradiated polypropylene and Teflon, Rad.
Wang, The modification of mechanical properties by 2 MeV Si ions irradiating polyimide, Nucl.
Cross-linking occurs in Teflon after irradiating it with gamma rays which improves its mechanical properties [58].
Chen et al. [61] modified the mechanical properties of polyimide by bombarding it with 2 MeV Si ions.
Zihlif, Examination of optical properties and estimation of mechanical energies of irradiated polypropylene and Teflon, Rad.
Wang, The modification of mechanical properties by 2 MeV Si ions irradiating polyimide, Nucl.
Online since: December 2022
Authors: Ojo Sunday Isaac Fayomi, O. Joshua Okeniyi, Biola Mathew Biodun
The size of an oxide's particles is very important to the structure, size, and other properties of a substance.
Temperature, pH, and time are just a few examples of process factors that can and should be adjusted [38].
Ashori, ‘Wood plastic composites from agro-waste materials: Analysis of mechanical properties’, Bioresource technology, vol. 101, no. 7, pp. 2525–2528, 2010.
“Physical Properties of Rice Residues as Affected by Variety and Climatic and Cultivation Conditions in Three Continents.”
Influence of inherent silicon and metals in rice husk on the char properties and associated silica structure.
Temperature, pH, and time are just a few examples of process factors that can and should be adjusted [38].
Ashori, ‘Wood plastic composites from agro-waste materials: Analysis of mechanical properties’, Bioresource technology, vol. 101, no. 7, pp. 2525–2528, 2010.
“Physical Properties of Rice Residues as Affected by Variety and Climatic and Cultivation Conditions in Three Continents.”
Influence of inherent silicon and metals in rice husk on the char properties and associated silica structure.
Online since: May 2017
Authors: Indranil Banerjee, Krishna Pramanik, Mahesh Kumar Sah
Many research groups have studied the SF/PVA blends to improve the mechanical properties of SF [15–19].
Xu, Metal ion permeation properties of silk fibroin/chitosan blend membranes, Polym.
Kuga, Structure and properties of silk fibroin–poly (vinyl alcohol) gel, Int.
Yao, Deposition behavior and properties of silk fibroin scaffolds soaked in simulated body fluid, Mater.
Gunasekaran, Selected properties of pH-sensitive, biodegradable chitosan–poly (vinyl alcohol) hydrogel, Polym.
Xu, Metal ion permeation properties of silk fibroin/chitosan blend membranes, Polym.
Kuga, Structure and properties of silk fibroin–poly (vinyl alcohol) gel, Int.
Yao, Deposition behavior and properties of silk fibroin scaffolds soaked in simulated body fluid, Mater.
Gunasekaran, Selected properties of pH-sensitive, biodegradable chitosan–poly (vinyl alcohol) hydrogel, Polym.
Online since: May 2017
Authors: Margarita Isaenkova, Evgeny Grigoriev, Artem Lunev, Artem Zazolin, Denis Pchelyakov, Yuri Perlovich, Olga Krymskaya
The main reason for lower densities of the compacts in our experiment
is the absence of the binder, which strongly affects the pressing procedure [19].
Hopefully, this does not affect the peak of the distribution.
Corresponding relative changes in volume (and density) are of the same order.The expression obtained for the deformation rate ˙ε by Coble [23] is very similar to Eq. 1 except for a numeric factor and a slightly different dependence on the crystallite size d.
Nien-Nan, The conversion of UO2 via ammonium uranyl carbonate: Study of precipitation, chemical variation and powder properties, Journal of Nuclear Materials 99, 2 (1981) 135-147
Siegele, Cleavage fracture assessment of transient thermo-mechanical loading situations by local approach, Engineering Fracture Mechanics (2017) http://dx.doi.org/10.1016/j.engfracmech.2017.02.012 [23] R.
Hopefully, this does not affect the peak of the distribution.
Corresponding relative changes in volume (and density) are of the same order.The expression obtained for the deformation rate ˙ε by Coble [23] is very similar to Eq. 1 except for a numeric factor and a slightly different dependence on the crystallite size d.
Nien-Nan, The conversion of UO2 via ammonium uranyl carbonate: Study of precipitation, chemical variation and powder properties, Journal of Nuclear Materials 99, 2 (1981) 135-147
Siegele, Cleavage fracture assessment of transient thermo-mechanical loading situations by local approach, Engineering Fracture Mechanics (2017) http://dx.doi.org/10.1016/j.engfracmech.2017.02.012 [23] R.
Online since: August 2013
Authors: Hong Yun Wei, Yu Guo Wei, Xiu Li Zhang, Wei Feng Zhou, Yuan Yuan Li
According to the design mixing ratio in Table 1, test cubes of 150 × 150 × 150 are fabricated (standard recommended sizes of φ100 × 100 and φ200 × 100 are not used mainly because that if the standard recommended sizes are used, due to the constraint of the cylindrical sidewall, the side face of the shaped specimen often has significant defects, which will affect the test results).
Due to higher activity of the slag powder, the active ingredients (activated aluminum and silicon in glass state) in the slag powder react with the hydration product of the cement (referred to as secondary reaction), generating hydrated silicic acid with cementitious properties and hydrated calcium aluminate cementitious substance on the surface, which fill the cement pores and improve the concrete density, simultaneously reduce the amount of Ca (OH)2 in the cement paste, form C-S-H gels, weaken the preferred orientation of Ca (OH)2, increase the density of the interface transition zone, and improve the structure and micro-mechanical properties of the interface transition zone; in addition, the slag powder is of small particles, with larger specific surface area and stronger adsorbing and curing abilities for chloride ions, the slag powder also contains a large amount of calcium and aluminum phases, the hydrated calcium aluminate produced in the hydration can combine with the chlorine ions
Study on Dense Packing Properties of Cementitious Materials [J].
Study on Influential Factors and Assessment Indexes of Duration Property of Concrete [J].
Due to higher activity of the slag powder, the active ingredients (activated aluminum and silicon in glass state) in the slag powder react with the hydration product of the cement (referred to as secondary reaction), generating hydrated silicic acid with cementitious properties and hydrated calcium aluminate cementitious substance on the surface, which fill the cement pores and improve the concrete density, simultaneously reduce the amount of Ca (OH)2 in the cement paste, form C-S-H gels, weaken the preferred orientation of Ca (OH)2, increase the density of the interface transition zone, and improve the structure and micro-mechanical properties of the interface transition zone; in addition, the slag powder is of small particles, with larger specific surface area and stronger adsorbing and curing abilities for chloride ions, the slag powder also contains a large amount of calcium and aluminum phases, the hydrated calcium aluminate produced in the hydration can combine with the chlorine ions
Study on Dense Packing Properties of Cementitious Materials [J].
Study on Influential Factors and Assessment Indexes of Duration Property of Concrete [J].
Online since: October 2014
Authors: Ming Liu, Sue Ling Lai, Kuo Cheng Kuo, Khunlaphat Chancham
In every country, energy is one of the significant factors for the economic development and plays as the important role in economic activities [7].
In particular German mechanical engineering products, vehicles, and chemicals are highly valued internationally.
This indicates that economic growth is one of the important factors to determine the progress of FDI in Germany.
Moreover, the high-skilled labor force yielding the good productivity is one of vital factors for Germany that many foreign investors make a decision as the investment location.
FDI is as one of the driven factors of economy in Germany.
In particular German mechanical engineering products, vehicles, and chemicals are highly valued internationally.
This indicates that economic growth is one of the important factors to determine the progress of FDI in Germany.
Moreover, the high-skilled labor force yielding the good productivity is one of vital factors for Germany that many foreign investors make a decision as the investment location.
FDI is as one of the driven factors of economy in Germany.
Online since: July 2021
Authors: Nurdin Ali, Husaini Husaini, Zulfri Muhammad, Mulyati Sri
Corrosion is the destruction or damage to property due to reacting to its environment [1], one of which is atmospheric corrosion.
Corrosion is the main factor causing premature failure of much of the equipment and infrastructure to be in corrosive operating environments [2],[3] [4].
Exposure testing only considers the weight loss variable, assuming that all atmospheric corrosion factors are represented in the form of mass loss.
The high rainfall that occurred at the study site, as well as humidity, greatly affects the level of corrosion that occurs in 5 (five) types of steel construction, as shown in Fig 9 above.
Ariffin, “Atmospheric Corrosion of Structural Steels Exposed in The 2004 Tsunami-Affected Areas of Aceh,” Int.
Corrosion is the main factor causing premature failure of much of the equipment and infrastructure to be in corrosive operating environments [2],[3] [4].
Exposure testing only considers the weight loss variable, assuming that all atmospheric corrosion factors are represented in the form of mass loss.
The high rainfall that occurred at the study site, as well as humidity, greatly affects the level of corrosion that occurs in 5 (five) types of steel construction, as shown in Fig 9 above.
Ariffin, “Atmospheric Corrosion of Structural Steels Exposed in The 2004 Tsunami-Affected Areas of Aceh,” Int.
Online since: October 2004
Authors: Eric J. Palmiere, I.C. Howard, S. Das
Howard
3,c
1
Automation Division, Tata Steel, Jamshedpur, INDIA-831 001
2
Institute for Microstructural and Mechanical Processing: The University of Sheffield (IMMPETUS)
Department of Engineering Materials, Mappin Street, Sheffield, S1 3JD, UK
3
IMMPETUS, Department of Mechanical Engineering, Mappin Street, Sheffield, S1 3JD, UK
a
sumitesh.das@tatasteel.com, be.j.palmiere@sheffield.ac.uk, ci.howard@sheffield.ac.uk
Keywords: Cellular automata modeling, FE modeling, length scales, hot rolling.
Differentiating the above equation with respect to strain gives i CA i CA d l M d ε ρ b = + (2) where +i CAdρ is the increase in dislocation density as a result of a change in strain ( i CAdε ) at a CA cell, M is the Taylor factor (=3.1 for f.c.c. metals) and i is the property of the CA cell expressed in terms of microstructural features such as grain interiors, grain boundaries, carbide particles etc.
The simulation is not affected as the macro variables in each FE drive the CA associated with it and act independently of the neighbouring CA arrays.
Differentiating the above equation with respect to strain gives i CA i CA d l M d ε ρ b = + (2) where +i CAdρ is the increase in dislocation density as a result of a change in strain ( i CAdε ) at a CA cell, M is the Taylor factor (=3.1 for f.c.c. metals) and i is the property of the CA cell expressed in terms of microstructural features such as grain interiors, grain boundaries, carbide particles etc.
The simulation is not affected as the macro variables in each FE drive the CA associated with it and act independently of the neighbouring CA arrays.
Online since: November 2022
Authors: Nalan Oya San Keskin, Furkan Deniz, Hasan Nazir
In this research, due to its commercially available, easy-to-process, high mechanical, thermal, and chemical resistance properties, polysulfone has been selected as the coating material [18].
Researchers have made great efforts to improve the properties of nanofibers.
The antibacterial properties of the PSU-Nf-AgNPs were explored against Gram-negative, Gram-positive bacteria, and model biofilm bacterium (Fig. 4).
This result clearly claimed antibacterial properties in PSU-Nf-AgNPs due to the surface-functionalized AgNPs on the nanofiber membranes.
Thus, acid corrosion was not a contributing factor in this work.
Researchers have made great efforts to improve the properties of nanofibers.
The antibacterial properties of the PSU-Nf-AgNPs were explored against Gram-negative, Gram-positive bacteria, and model biofilm bacterium (Fig. 4).
This result clearly claimed antibacterial properties in PSU-Nf-AgNPs due to the surface-functionalized AgNPs on the nanofiber membranes.
Thus, acid corrosion was not a contributing factor in this work.
Online since: August 2004
Authors: Bernard Pieraggi, Daniel Monceau, Nadia Vialas
Introduction
Single crystal nickel-base superalloys are widely used as turbine blades components in aero
and industrial gas turbines since they combine good mechanical properties with
microstructural stability at relatively high temperature [3].
Spallation depends on many factors such as surface roughness, surface preparation, material composition, but also cycle duration.
Cycle frequency can affect Al loss in the coating due to oxidation if it affects spallation.
Spallation depends on many factors such as surface roughness, surface preparation, material composition, but also cycle duration.
Cycle frequency can affect Al loss in the coating due to oxidation if it affects spallation.