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Online since: February 2016
Authors: István Páczelt, Zenon Mróz
The coupled thermo-mechanical problem was solved by the operator split technique [38].
This type of mechanical friction clutch is a very popular mechanical element used for effective braking of the rotating machine elements [41] or another type brake system [42].
The factor value is .
Mróz: Analysis of thermo-mechanical wear problems for reciprocal punch sliding, Adv.
Grzelczyk: Modeling and analytical/numerical analysis of wear processes in a mechanical friction clutch.
This type of mechanical friction clutch is a very popular mechanical element used for effective braking of the rotating machine elements [41] or another type brake system [42].
The factor value is .
Mróz: Analysis of thermo-mechanical wear problems for reciprocal punch sliding, Adv.
Grzelczyk: Modeling and analytical/numerical analysis of wear processes in a mechanical friction clutch.
Online since: November 2009
Authors: Ji Luo, Zhi Rui Wang
Introduction
The grain size effect on deformation mechanism is one of the most important problems on
microstructure-based properties.
It is well known that, the principles or rules for single crystal properties cannot be, and should not be, applied directly for polycrystalline materials.
It is clear that the size of the crystal would affect the total elastic energy stored.
This would to some extent affect the accuracy of the predictions.
Courtney: Mechanical Behavior of Materials (McGraw Hill, Boston-Toronto 2000)
It is well known that, the principles or rules for single crystal properties cannot be, and should not be, applied directly for polycrystalline materials.
It is clear that the size of the crystal would affect the total elastic energy stored.
This would to some extent affect the accuracy of the predictions.
Courtney: Mechanical Behavior of Materials (McGraw Hill, Boston-Toronto 2000)
Online since: April 2015
Authors: Tong Liu, Min Shan Liu
Utilizing molecular dynamics method not only a great deal of valuable micro-behaviors can be got but also the macro-properties of a material can be reproduced[15].
It is expected to probe whether crack growth properties have relationship with some parameters referring to radial distribution function in α-Fe during crack propagation at different temperatures.
Factor Cm(T) is defined as a function in form of
It has been found that the temperature significantly affects the crack growth rate.
High Temperature Thermal and Structural Material Properties for Metals used in LWR Vessels.
It is expected to probe whether crack growth properties have relationship with some parameters referring to radial distribution function in α-Fe during crack propagation at different temperatures.
Factor Cm(T) is defined as a function in form of
It has been found that the temperature significantly affects the crack growth rate.
High Temperature Thermal and Structural Material Properties for Metals used in LWR Vessels.
Online since: June 2021
Authors: Khathutshelo Kentridge Mantsha, Dawood Ahmed Desai, P. Stephan Heyns
Table 1 below outlines the material properties used in this study.
Material Properties used in FEMs [18].
As a result, steps were taken to ensure that the suspension bands did not appreciably affect the modes.
The suspension points were chosen based on two factors.
[18] MPDB, Material properties database software, vol. v 8.41, ed
Material Properties used in FEMs [18].
As a result, steps were taken to ensure that the suspension bands did not appreciably affect the modes.
The suspension points were chosen based on two factors.
[18] MPDB, Material properties database software, vol. v 8.41, ed
Online since: May 2010
Authors: Matteo Leoni, Paolo Scardi, Jorge Martinez-Garcia
Introduction
Dislocations are frequently occurring lattice defects in materials, as a result of growth processes or
of thermal and mechanical treatments [1,2].
In fact, as shown by Eq. (1), the average DCF is proportional to the mean square strain and, as such, it must respect the properties and related crystallographic invariance conditions of the elastic tensor.
Values of the Ei coefficients in Eq.(6) can be calculated if information on the dislocations (slip plane, Burgers vector) and on the elastic properties of the material (elastic tensors cij or sij) are known.
The Wilkens routine is the core of the calculation for the dislocation-related broadening, but is limited only to contrast factors parameterized as in eq. (7) and eqs. (5) and (5b).
Intensities are calculated on the basis of BaTiO3 structure assuming zero thermal factors.
In fact, as shown by Eq. (1), the average DCF is proportional to the mean square strain and, as such, it must respect the properties and related crystallographic invariance conditions of the elastic tensor.
Values of the Ei coefficients in Eq.(6) can be calculated if information on the dislocations (slip plane, Burgers vector) and on the elastic properties of the material (elastic tensors cij or sij) are known.
The Wilkens routine is the core of the calculation for the dislocation-related broadening, but is limited only to contrast factors parameterized as in eq. (7) and eqs. (5) and (5b).
Intensities are calculated on the basis of BaTiO3 structure assuming zero thermal factors.
Online since: November 2017
Authors: Kaustubh N. Kulkarni
Alloying of NiAl and FeAl has been an important aspect of improving the properties of the materials based on NiAl and FeAl [3, 6, 7].
The two aluminides also rely on alloying for improving their properties.
Horton Jr., Effect of refractory alloying additions on mechanical properties of near-stoichiometric NiAl, Mater.
Miracle, The physical and mechanical properties of NiAl, Acta mater. 41 (3) 649-684 [54] Z.
Wasilewski, Electric and magnetic properties of B2 structure compounds: NiAl and CoAl, J.
The two aluminides also rely on alloying for improving their properties.
Horton Jr., Effect of refractory alloying additions on mechanical properties of near-stoichiometric NiAl, Mater.
Miracle, The physical and mechanical properties of NiAl, Acta mater. 41 (3) 649-684 [54] Z.
Wasilewski, Electric and magnetic properties of B2 structure compounds: NiAl and CoAl, J.
Online since: June 2010
Authors: Maria Vallet-Regí, Blanca González, Carlos López de Laorden, Montserrat Colilla
This is attributed to factors like the known multivalency of the dendrimers and
the availability of their terminal groups, overcoming steric inhibition that can be found with
polymers.
Moreover, there are other remarkable factors such as mesopore diameter, which must be big enough to allow the properly confinement of the host-molecule.
MRI agents produce image contrast by affecting the relaxation properties of water protons.
Carbon is considered a ceramic because of its many ceramic-like properties.
In Bioceramics: Properties, Preparations and Applications, edited by W.
Moreover, there are other remarkable factors such as mesopore diameter, which must be big enough to allow the properly confinement of the host-molecule.
MRI agents produce image contrast by affecting the relaxation properties of water protons.
Carbon is considered a ceramic because of its many ceramic-like properties.
In Bioceramics: Properties, Preparations and Applications, edited by W.
Online since: February 2014
Authors: Bing Cao, Xin Ling Li, Jiang Feng Li, Xiu Cheng Luo, Meng Ke Sun, Wei Guo Shen
The presence of C3S, C2S, C4AF and C2F endorses steel slag cementitious properties.
Steel slag is rich in minerals such as C2S, C3S and the presence of C3S; C2S endorses steel slag cementitious properties.
The main factor that affects the practical application of steel slag is its poor soundness.
The steel slag which has cementitious properties can be used as partial or full replacement for Portland cement and it is attributable to the high energy consumption for the production of Portland cement.
Tsakiridis, et al, Properties and hydration of blended cements with steelmaking slag, J.Cement and concrete research. 37 (2007) 815-822
Steel slag is rich in minerals such as C2S, C3S and the presence of C3S; C2S endorses steel slag cementitious properties.
The main factor that affects the practical application of steel slag is its poor soundness.
The steel slag which has cementitious properties can be used as partial or full replacement for Portland cement and it is attributable to the high energy consumption for the production of Portland cement.
Tsakiridis, et al, Properties and hydration of blended cements with steelmaking slag, J.Cement and concrete research. 37 (2007) 815-822
Online since: July 2014
Authors: Xin Gao, Jun Wen Yang, Yi Li, Li Jing Liu, Shu Kui Yao
From the analysis of the above arch bridge damages, the main types of damages of metal sheath were corrosion and internal cracking of cement mortar caused by environmental factors.
Fig. 1 Commonly encountered damages in cable There are following causes of common damages in cable body protection measures: 1) The production process and mechanical characteristics of cable members.
All the methods above could detect the cable corrosion, but all methods were indirect ones except for the fenestration detection method, which indirectly judged the corrosion degree of the cable body by measuring the physical factors related to the corrosion.
Uneven cable force, cable corrosion, wire breaking and cracking Magnetic flux method Detect changes of flux by small electromagnetic sensors, Calculate the cable force and the degree of cable damage based on the relationship between temperature and flux. 1) Advantage is that it will not affect any the mechanical and physical properties of cable except for magneticing cable, 2) The disadvantage is that you must field calibration underr the interference from temperature and electromagnetic field.
Main damage encountered in metal sheath is corrosion and internal cement mortar cracking caused by environmental factors; Main damage encountered in organic sheath are aging, cracking caused by external load, long-term high stress and others.
Fig. 1 Commonly encountered damages in cable There are following causes of common damages in cable body protection measures: 1) The production process and mechanical characteristics of cable members.
All the methods above could detect the cable corrosion, but all methods were indirect ones except for the fenestration detection method, which indirectly judged the corrosion degree of the cable body by measuring the physical factors related to the corrosion.
Uneven cable force, cable corrosion, wire breaking and cracking Magnetic flux method Detect changes of flux by small electromagnetic sensors, Calculate the cable force and the degree of cable damage based on the relationship between temperature and flux. 1) Advantage is that it will not affect any the mechanical and physical properties of cable except for magneticing cable, 2) The disadvantage is that you must field calibration underr the interference from temperature and electromagnetic field.
Main damage encountered in metal sheath is corrosion and internal cement mortar cracking caused by environmental factors; Main damage encountered in organic sheath are aging, cracking caused by external load, long-term high stress and others.
Online since: January 2010
Authors: D.W. Walsh, D.B. Gibbs
Alloy 2020, a high strength Al-4.5Cu-1Li alloy developed and offered commercially in the
late 1950's was withdrawn from the market as a result of poor properties and production problems.
Voluminous information regarding mechanical properties and aging characteristics of these alloys exist, but only limited work regarding weldability has been done.
The maximum crack length, at saturation strain is correlated to the width of the heat affected zone.
Welding compounds the in homogeneity in weld / weld regions and creates serial regions of vastly different mechanical property.
When these factors interact to create a limited ability to tolerate strain in a critical temperature range, cracks form.
Voluminous information regarding mechanical properties and aging characteristics of these alloys exist, but only limited work regarding weldability has been done.
The maximum crack length, at saturation strain is correlated to the width of the heat affected zone.
Welding compounds the in homogeneity in weld / weld regions and creates serial regions of vastly different mechanical property.
When these factors interact to create a limited ability to tolerate strain in a critical temperature range, cracks form.