Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: April 2009
Authors: Vincent Vignal, J. Marcos Salazar, Aurélie Clair, Marc Foucault, Eric Finot, Laurent Markey
Today, the impact of the oxide growth
on the mechanical properties of nickel alloys is a challenge.
The surface analysis and the quantification of the local deformation are key factors to deduce the surface damage of the substrate produced by corrosion.
The mechanical properties of the alloy are modified, in the long term, by the heat transfer between the primary and secondary water inside the steam generator.
The mechanical properties of surfaces or thin films determine the survival and/or the ageing of many industrial components.
Eisenstadt: Introduction to Mechanical Properties of Materials (The McMillan Co., New York 1971)
The surface analysis and the quantification of the local deformation are key factors to deduce the surface damage of the substrate produced by corrosion.
The mechanical properties of the alloy are modified, in the long term, by the heat transfer between the primary and secondary water inside the steam generator.
The mechanical properties of surfaces or thin films determine the survival and/or the ageing of many industrial components.
Eisenstadt: Introduction to Mechanical Properties of Materials (The McMillan Co., New York 1971)
Online since: August 2023
Authors: Aurelian Gruin, Cornelia Baeră, Bogdan Bolborea, Ion Aurel Perianu, Luiza Varga
The physical characteristics of the use sands are presented in Table 1; future analysis is considered, in order to obtain a clear view of all parameters and factors that could affect the mortars’ properties, fresh or hardened state.
Physical properties of aggregates used for mortar mix design Physical properties Natural Sand 0/4 (S) Spent garnet I (SG I) Spent garnet II (SG II) Bulk density, (kg/m3) 1550 2000 2120 Dry net density, (kg/m3) - 2690 - Water absorption (WA, %) - 2.4 - Fineness modulus 6.86 3.74 3.88 Table 2.
Hardened state densities of the mixes Mechanical properties evaluation The compressive strengths, as critical mechanical characteristic for concrete and mortar evaluation, was performed by using the EN 196-1 [19] and EN 1015-11 [21] standardized procedures, at several relevant ages: early age, namely 7 days, 14 days and 28 days.
No indication of future incompatibilities, affecting compression as critical parameter for material evaluation, is expected.
Mechanical properties of self-compacting geopolymer concrete containing spent garnet as replacement for fine aggregate.
Physical properties of aggregates used for mortar mix design Physical properties Natural Sand 0/4 (S) Spent garnet I (SG I) Spent garnet II (SG II) Bulk density, (kg/m3) 1550 2000 2120 Dry net density, (kg/m3) - 2690 - Water absorption (WA, %) - 2.4 - Fineness modulus 6.86 3.74 3.88 Table 2.
Hardened state densities of the mixes Mechanical properties evaluation The compressive strengths, as critical mechanical characteristic for concrete and mortar evaluation, was performed by using the EN 196-1 [19] and EN 1015-11 [21] standardized procedures, at several relevant ages: early age, namely 7 days, 14 days and 28 days.
No indication of future incompatibilities, affecting compression as critical parameter for material evaluation, is expected.
Mechanical properties of self-compacting geopolymer concrete containing spent garnet as replacement for fine aggregate.
Online since: September 2011
Authors: Wei Fang Zhang, Ming Yuan Yang, Zong Ren Wang
According the law, the input uncertainty factors of the TCC measurement are temperature measurement, length measurement and the radial heat losses.
And the uncertainty of the experiment is the sum of the uncertainty of those factors.
Testing and discussion TCC between typical structural materials GH4169 and K417was tested, and its influence factors were studied by the equipment and method introduced above.
This is because high temperature can not only affect the mechanical property and heat transfer performance of material, but also causes oxidization of the interface.
The change of the mechanical property and heat transfer performance of material can promote the increasing of contact area and interfacial heat transfer to a certain extent, however the oxidization of the interface has an adverse affection.
And the uncertainty of the experiment is the sum of the uncertainty of those factors.
Testing and discussion TCC between typical structural materials GH4169 and K417was tested, and its influence factors were studied by the equipment and method introduced above.
This is because high temperature can not only affect the mechanical property and heat transfer performance of material, but also causes oxidization of the interface.
The change of the mechanical property and heat transfer performance of material can promote the increasing of contact area and interfacial heat transfer to a certain extent, however the oxidization of the interface has an adverse affection.
Online since: June 2008
Authors: Sergey Usherenko, Oleg Figovsky
As much as possible essential changes in properties of materials can be gained at use of
physical tools which provide simultaneously many factors of action on a material.
As a result of complex affecting the phase transition in metals and graphite and considerable crushing of structural elements is detected.
These neither mechanical nor hydrodynamical factors of SDP have essential influence on a situation inside a metal barrier. 4.
Very small volume concentration of reinforcing elements, however, leads to essential changes of mechanical properties.
Thus, it is not possible to find connection between volume changes of "channel" zones in structure and level of mechanical properties.
As a result of complex affecting the phase transition in metals and graphite and considerable crushing of structural elements is detected.
These neither mechanical nor hydrodynamical factors of SDP have essential influence on a situation inside a metal barrier. 4.
Very small volume concentration of reinforcing elements, however, leads to essential changes of mechanical properties.
Thus, it is not possible to find connection between volume changes of "channel" zones in structure and level of mechanical properties.
Online since: August 2014
Authors: Monthon Nakpathom, Nattadon Rungruangkitkrai, Charoon Klaichoi, Rattanaphol Mongkholrattanasit, Jitti Pattavanitch
The fastness properties ranged from fair to good, while washing fastness was poor level.
Different factors affecting the dyeing ability were recorded and thoroughly investigated in this experiment.
It is hoped that the data from this article can provide a good insight into the UV protection properties of clothing made from silk fabric dyed with lac dye.
Evaluation of colour fastness properties The colour fastness to washing, light, and rubbing and water of the dyed samples was determined according to ISO standard test methods.
It was concluded that silk fabrics dyed with powdered lac dye with metal mordants (AlK(SO4)2, CuSO4, FeSO4 and SnCl2) have “very good to excellent UV protection” properties.
Different factors affecting the dyeing ability were recorded and thoroughly investigated in this experiment.
It is hoped that the data from this article can provide a good insight into the UV protection properties of clothing made from silk fabric dyed with lac dye.
Evaluation of colour fastness properties The colour fastness to washing, light, and rubbing and water of the dyed samples was determined according to ISO standard test methods.
It was concluded that silk fabrics dyed with powdered lac dye with metal mordants (AlK(SO4)2, CuSO4, FeSO4 and SnCl2) have “very good to excellent UV protection” properties.
Online since: April 2021
Authors: Hao Ran Zheng
The Process of Dendrites Growth
The growth of lithium dendrite is one of the fundamental problems affecting the safety and stability of lithium batteries.
Other similar alkali metals or alkaline earth metals have similar properties.
However, the SEI film composed of inorganic substances lacks good mechanical properties, so it cannot adapt to the volume change during lithium deposition and dissolution. [18] The poor mechanical properties of SEI make metallic lithium inevitably expose new surfaces during cycling, resulting in the gradual consumption of additives, so the improvement of lithium anodes by inorganic additives is quite limited.
Factors Which Limit the Cycle Life of Rechargeable Lithium (Metal) Batteries.
Dendrite Growth of Lithium Metal Anode for Rechargeable Batteries: Theoretical Basis, Influencing Factors and Inhibition Methods.
Other similar alkali metals or alkaline earth metals have similar properties.
However, the SEI film composed of inorganic substances lacks good mechanical properties, so it cannot adapt to the volume change during lithium deposition and dissolution. [18] The poor mechanical properties of SEI make metallic lithium inevitably expose new surfaces during cycling, resulting in the gradual consumption of additives, so the improvement of lithium anodes by inorganic additives is quite limited.
Factors Which Limit the Cycle Life of Rechargeable Lithium (Metal) Batteries.
Dendrite Growth of Lithium Metal Anode for Rechargeable Batteries: Theoretical Basis, Influencing Factors and Inhibition Methods.
Online since: November 2013
Authors: Ming Chen, Zhen Zhang, Yang Xu, Tao Wang
Reasonable design of oil tank and study of oil tank fire extinguishing introducing new method are very important to property safety and social stability.
Vehicle safety monitoring is studied and we analyze and summarize the many factors that affect vehicle safety, and practicality of extracting a representative vehicle safety monitoring technology, analytics implementations.
Mao: Mechanical properties of Jintan mine rock salt under complex stress paths, International Journal of Rock Mechanics and Mining Sciences, Vol.56(2012), p.54-61
Vehicle safety monitoring is studied and we analyze and summarize the many factors that affect vehicle safety, and practicality of extracting a representative vehicle safety monitoring technology, analytics implementations.
Mao: Mechanical properties of Jintan mine rock salt under complex stress paths, International Journal of Rock Mechanics and Mining Sciences, Vol.56(2012), p.54-61
Online since: October 2012
Authors: Liang Li, Dong Mei You, Bing Han
Many factors impacting mountainous highway routing decision-making.
Many factors affecting highway routing plan such as the topographic condition, operation condition and environmental protection.
The factors influence with each other and its weight is variable.
In solving process for decision-making of route selection, it is very important to determine the weight of decision factor which affect the reliability and accuracy of the alternative ranking result.
Gray system theory and its application in mechanical engineering [M].National Defense University Press2001.
Many factors affecting highway routing plan such as the topographic condition, operation condition and environmental protection.
The factors influence with each other and its weight is variable.
In solving process for decision-making of route selection, it is very important to determine the weight of decision factor which affect the reliability and accuracy of the alternative ranking result.
Gray system theory and its application in mechanical engineering [M].National Defense University Press2001.
Online since: September 2013
Authors: Jie Fan, Yong Liu, Xiao E Wang, Wei Jie Gao, Kun Wang
Nanofiber nonwoven has been used in many fields due to the high surface area to volume ratio of the nanofibers and other extremely excellent properties.
The methods included liquid reservoir collector[4], dynamic liquid system[5] , mechanical twisting [6], two rings collector[7] and conjugate electrospinning [8, 9], etc.
The possible reason might be that the charged jets were affected by a strong electric field.
Applied voltage is one of the important factors affecting on nanofibers in electrospinning.
Fig.4 Photograph and SEM micrograph of PVA continuous nanofiber yarn obtained in this experiments Mechanical behavior of the yarn was showed in Table 1.
The methods included liquid reservoir collector[4], dynamic liquid system[5] , mechanical twisting [6], two rings collector[7] and conjugate electrospinning [8, 9], etc.
The possible reason might be that the charged jets were affected by a strong electric field.
Applied voltage is one of the important factors affecting on nanofibers in electrospinning.
Fig.4 Photograph and SEM micrograph of PVA continuous nanofiber yarn obtained in this experiments Mechanical behavior of the yarn was showed in Table 1.
Online since: May 2013
Authors: Xiao Peng Yao, Guo Fu Yin, Hui Fang
The main structure of gantry machine tools includes a cross beam, a longitudinal beam, a column, a sliding box, a ram, a spindle and other mechanical parts, whose static and dynamic stiffness largely decides the dynamic properties and working properties of machine tools.
Since the nineteen fifties, Soviet Union scholars have firstly studied the structure of machine tools, the stiffness of key components and influencing factors[1].
In recent years, scholars around the world more realized the importance of the dynamic, static characteristics of key components to the whole machine tools, but due to the force of the non-linear and diversity of factors, most of them are based on the experimental study which lack accurate simulation analysis.
For the 5-axis gantry machine tools, because its structure and dynamic characteristics are greatly different from the ones of traditional machines, the existing machine tool’s optimization method and algorithms analysis have been unable to fully meet the research needs.This paper puts forward a new simplification algorithm about variable cross-beam to study stiffness properties and performance prediction of machine tools.
Static analysis of the beam Static analysis is applied to calculate the displacement, stress, strain in mechanical structure under the dead load.
Since the nineteen fifties, Soviet Union scholars have firstly studied the structure of machine tools, the stiffness of key components and influencing factors[1].
In recent years, scholars around the world more realized the importance of the dynamic, static characteristics of key components to the whole machine tools, but due to the force of the non-linear and diversity of factors, most of them are based on the experimental study which lack accurate simulation analysis.
For the 5-axis gantry machine tools, because its structure and dynamic characteristics are greatly different from the ones of traditional machines, the existing machine tool’s optimization method and algorithms analysis have been unable to fully meet the research needs.This paper puts forward a new simplification algorithm about variable cross-beam to study stiffness properties and performance prediction of machine tools.
Static analysis of the beam Static analysis is applied to calculate the displacement, stress, strain in mechanical structure under the dead load.