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Online since: March 2015
Authors: Sergey Prokoshkin, Alena Kreitcberg, Andrey Korotitskiy, Vladimir Brailovski, Karine Inaekyan
Since the last two structures are not predominant, they do not represent a major factor in the resulting material properties after the PDA.
On the whole, if we neglect these additional factors, the maximum value and the degree of the realization of the theoretical limit of the recovery strain is affected by two main factors. 1) The first, i.e.
Static functional properties.
Note that similar evolution of mechanical properties as a function of CR-PDA processing can be observed for Ti-50.6%Ni alloy.
Two main factors affect the value and realization theoretical limit of recovery strain in Ti-Ni SMA.
On the whole, if we neglect these additional factors, the maximum value and the degree of the realization of the theoretical limit of the recovery strain is affected by two main factors. 1) The first, i.e.
Static functional properties.
Note that similar evolution of mechanical properties as a function of CR-PDA processing can be observed for Ti-50.6%Ni alloy.
Two main factors affect the value and realization theoretical limit of recovery strain in Ti-Ni SMA.
Online since: May 2011
Authors: Xing Hua Jiao, Wen Bo Zhang, Min Jiang Zhang, Li Ping Zhang
Environment temperature and loading condition will greatly affect its performance.
Low temperature bending creep test of asphalt mixture The properties of the material.
When the factors mentioned above are changed, the asphalt mixture will have different properties as elasticity, viscoelasticity, viscoplasticity and plasticity etc.
Because of the complexity of the rheological model of asphalt mixture, it’s unable to show viscoelastic property of asphalt mixture by a single mechanical component.
Conclusions (1) The Burgers model established in this paper can precisely describe viscoelastic properties of asphalt mixture based on the creep test of base asphalt and SBR modified asphalt (2) The methods of determining relaxation modulus are feasible based on the bending creep test data and time-temperature equivalence principle.
Low temperature bending creep test of asphalt mixture The properties of the material.
When the factors mentioned above are changed, the asphalt mixture will have different properties as elasticity, viscoelasticity, viscoplasticity and plasticity etc.
Because of the complexity of the rheological model of asphalt mixture, it’s unable to show viscoelastic property of asphalt mixture by a single mechanical component.
Conclusions (1) The Burgers model established in this paper can precisely describe viscoelastic properties of asphalt mixture based on the creep test of base asphalt and SBR modified asphalt (2) The methods of determining relaxation modulus are feasible based on the bending creep test data and time-temperature equivalence principle.
Online since: November 2012
Authors: Huan Lao Liu, Bao Yue Chen, Feng Liu, Guang Yu Tan
The results could provides the test data and theoretical basis for the mechanism of the processing performance affected by the dynamic behavior of machine tools.
In the machining process, there are many factors (the status, pose and cutting parameters of the tool, workpiece materials etc.) to affect the magnitude and direction of the cutting force.
In the case of cutting force no mutations (in the change of normal range), along with the extension of time, cutting tool wear and other factors, solve the reliability of the model.
This provides the test data and theoretical basis for the mechanism of the processing performance affected by the dynamic behavior of machine tools
Chinese Mechanical Engineering, 2008, 9(16):1908-1911
In the machining process, there are many factors (the status, pose and cutting parameters of the tool, workpiece materials etc.) to affect the magnitude and direction of the cutting force.
In the case of cutting force no mutations (in the change of normal range), along with the extension of time, cutting tool wear and other factors, solve the reliability of the model.
This provides the test data and theoretical basis for the mechanism of the processing performance affected by the dynamic behavior of machine tools
Chinese Mechanical Engineering, 2008, 9(16):1908-1911
Online since: December 2014
Authors: Vadim Sh. Sufiiarov, Evgenii V. Borisov, Igor A. Polozov
Inconel 718, a nickel-based superalloy, features a high complex of properties owing to solid solution and dispersion strengthening mechanisms.
This work does not include the study of the way heat treatment affects the phase composition and properties, so the results refer to the products manufactured using SLM without further heat treatment.
The results of the tests showed that the mechanical properties are comparable to the properties of the specimens manufactured by the casting technology before heat treatment: σ0.2 = 477 MPa, σu = 752 MPa, δ = 33.8% [15].
The ability to control the trajectory of the laser allows using this technology for creating products with anisotropic properties in future.
The microstructure and mechanical properties of deposited-IN718 by selective laser melting, J.
This work does not include the study of the way heat treatment affects the phase composition and properties, so the results refer to the products manufactured using SLM without further heat treatment.
The results of the tests showed that the mechanical properties are comparable to the properties of the specimens manufactured by the casting technology before heat treatment: σ0.2 = 477 MPa, σu = 752 MPa, δ = 33.8% [15].
The ability to control the trajectory of the laser allows using this technology for creating products with anisotropic properties in future.
The microstructure and mechanical properties of deposited-IN718 by selective laser melting, J.
Online since: July 2020
Authors: Zhen Yuan, Hao Ran Zhou, Chen Liu
Preparation and Properties of Modified Boron Nitride/Epoxy Resin Thermal Conductive Composites
Liu Chen1,a, Zhou Haoran2,b* and Yuan Zhen3,c
1-3Harbin University of Science and Technology, Harbin, China
a1104574488@qq.com, bZhouhaoran2013@163.com, c907101988@qq.com
Keywords: epoxy resin; boron nitride; thermal conductivity; thermal stability
Abstract.
Introduction Epoxy resin has been widely used in electronic packaging, component bonding and other fields due to its excellent electrical insulation properties, high mechanical properties, dielectric properties and simple machining processes.
This may be the nonuniform thermal scattered hot spots leads to increase in uneven thermal stress intensity factors.
Preparation and properties study of epoxy /modified boron nitride thermal conductive composites[J].
Study on Preparation, thermal conductivity and electrical insulation properties of Epoxy/AlN[J].
Introduction Epoxy resin has been widely used in electronic packaging, component bonding and other fields due to its excellent electrical insulation properties, high mechanical properties, dielectric properties and simple machining processes.
This may be the nonuniform thermal scattered hot spots leads to increase in uneven thermal stress intensity factors.
Preparation and properties study of epoxy /modified boron nitride thermal conductive composites[J].
Study on Preparation, thermal conductivity and electrical insulation properties of Epoxy/AlN[J].
Online since: May 2016
Authors: Roberto Venturini, Paolo Daniele Avancini, Nicola Barbier, Alessandro Rizzi
This work is focused on describing some aspects of the industrial production process and the investigation of the metallographic and mechanical properties for thin gauge HSLA and multi-phase steel strips.
The quality demands HS and AHS steels are higher in terms of: steel cleanness, internal soundness, homogeneous mechanical properties, homogeneous microstructure and surface quality [5].
Therefore a balance between mechanical properties and chemical composition was taken into account during the development of these steel grades.
The mechanical tests (Tab. 2) showed a good homogeneity of properties along the length of the strip and along the width.
Tab. 2 – Average mechanical properties of the different steel grades for coil head (H1-H2-H3), centre (C1-C2-C3) and tail (T1-T2-T3), with their standard deviations in brackets.
The quality demands HS and AHS steels are higher in terms of: steel cleanness, internal soundness, homogeneous mechanical properties, homogeneous microstructure and surface quality [5].
Therefore a balance between mechanical properties and chemical composition was taken into account during the development of these steel grades.
The mechanical tests (Tab. 2) showed a good homogeneity of properties along the length of the strip and along the width.
Tab. 2 – Average mechanical properties of the different steel grades for coil head (H1-H2-H3), centre (C1-C2-C3) and tail (T1-T2-T3), with their standard deviations in brackets.
Online since: February 2016
Authors: A.S. Benosman, M. Mouli, Y. Senhadji, M. Omrane
Some physical and mechanical properties of OPC concretes or mortars with waste PET aggregates are examined in the studies [6-8].
Its chemical properties are shown in Table 1.
The chemical properties are shown in Table 1.
The consequence is progressive leaching of portlandite and C–S–H, thus leading to a decrease of the mechanical properties of mortar.
So, these composites can be advantageous for special applications where the main request is not for mechanical properties. 5.
Its chemical properties are shown in Table 1.
The chemical properties are shown in Table 1.
The consequence is progressive leaching of portlandite and C–S–H, thus leading to a decrease of the mechanical properties of mortar.
So, these composites can be advantageous for special applications where the main request is not for mechanical properties. 5.
Online since: April 2018
Authors: Xuan Cheng, Hong Yu Wang, Ying Zhang, Liu Ying Huang
Dynamic time sweep of rotational rheometer has been used to study the variation in rheological properties of polymers with time.
The results confirmed that the shear stress of PCS melt was readily affected by temperature alteration.
Introduction The strain control rotational rheometer, quipped with different methods of steady, transient and dynamic tests, has been maturely applied to study rheological properties of polymers.
During the process, melt spinning is a key step impacted by rheological properties of PCS melt.
Temperature control was an important factor on PCS melt rheological test.
The results confirmed that the shear stress of PCS melt was readily affected by temperature alteration.
Introduction The strain control rotational rheometer, quipped with different methods of steady, transient and dynamic tests, has been maturely applied to study rheological properties of polymers.
During the process, melt spinning is a key step impacted by rheological properties of PCS melt.
Temperature control was an important factor on PCS melt rheological test.
Online since: February 2012
Authors: Wei Si, Jing Jie Sha, Lei Liu, Jia Peng Li, Xiao Long Wei, Yun Fei Chen
Detecting DNA Using a Single Graphene Pore by Molecular Dynamics Simulations
Wei Si1, Jingjie Sha2, Lei Liu , Jiapeng Li , Xiaolong Wei ,Yunfei Chen3
Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast University, Nanjing 210096, People’s Republic of China
1southeast_siwei@sina.com, 2major212@seu.edu.cn, 3yunfeichen@seu.edu.cn
Keywords: dsDNA; graphene; MD simulation; gromacs; block current; translocating time
Abstract:DNA charged negatively could be transported through a solid nanopore by the force of an electrical field.
Recently, the nice properties of graphene attract a lot of researchers.
For multiple graphene membranes, the factors affect DNA translocating time may occur, so we can’t just use the Van der Waals force as the dominating reason.
The main factors affecting DNA transport were the electrical field and diameter of pore, which can control the velocity of DNA.
Recently, the nice properties of graphene attract a lot of researchers.
For multiple graphene membranes, the factors affect DNA translocating time may occur, so we can’t just use the Van der Waals force as the dominating reason.
The main factors affecting DNA transport were the electrical field and diameter of pore, which can control the velocity of DNA.
Online since: November 2012
Authors: Huan Li, Jing Chao Jia, Qing Tao Bi
The influences of pore water solution concentration on the swelling properties of expansive soils were studied using the constant volume swelling pressure experiments and swelling ratio experiments under load.
Introduction The study of influencing factors on the swelling behaviors of bentonites usually concentrated in the mechanical factors imposed on soils, for example the vertical load applied on the sample, and the physical character of soils, for example initial dry density, initial water content.
Although the inundating solution, viz. bulk solution, is lower than the original solution to prepare the specimens, the concentrations of the solutions around the clay layers are not necessarily affected by the bulk solutions.
Introduction The study of influencing factors on the swelling behaviors of bentonites usually concentrated in the mechanical factors imposed on soils, for example the vertical load applied on the sample, and the physical character of soils, for example initial dry density, initial water content.
Although the inundating solution, viz. bulk solution, is lower than the original solution to prepare the specimens, the concentrations of the solutions around the clay layers are not necessarily affected by the bulk solutions.