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Online since: April 2015
Authors: Azrul Azlan Hamzah, Noraini Marsi, Burhanuddin Yeop Majlis, Faisal Mohd-Yasin
The test results indicated that 3C-SiC has good fatigue properties when heated up to 1000 °C with the maximum load of 52.72 N directly bring out the maximum stress and maximum strain of 104.95 MPa and 3.2%, respectively.
Single crystal (3C-SiC) has excellent mechanical and electrical properties in terms of their high mechanical strength (GPa), high thermal conductivity (3.6 W/cm°C), high band gap (9.3 eV), high temperature performance, chemical inertness and high melting point.
These properties make 3C-SiC a suitable material operating at high temperatures, high power and high frequency as well as in harsh environment [1].
The effect by using 3C-SiC materials for extreme temperatures on mechanical properties has been extensively studied and it has been approved to upgrade into existing technology interest for MEMS devices [2].
The different materials and operating temperatures will affects the fracture path because of the different mechanical properties might be transform the initial orientation in the stress-strain criterion which is depends on the maximum of the loads can be withstand on critical strain [5].
Single crystal (3C-SiC) has excellent mechanical and electrical properties in terms of their high mechanical strength (GPa), high thermal conductivity (3.6 W/cm°C), high band gap (9.3 eV), high temperature performance, chemical inertness and high melting point.
These properties make 3C-SiC a suitable material operating at high temperatures, high power and high frequency as well as in harsh environment [1].
The effect by using 3C-SiC materials for extreme temperatures on mechanical properties has been extensively studied and it has been approved to upgrade into existing technology interest for MEMS devices [2].
The different materials and operating temperatures will affects the fracture path because of the different mechanical properties might be transform the initial orientation in the stress-strain criterion which is depends on the maximum of the loads can be withstand on critical strain [5].
Online since: October 2015
Authors: Kantima Chaochanchaikul, Wanlop Harnnarongchai
The sound absorbing efficiency of natural rubber (NR) foam is affected by the cell morphology of foam.
The cell characteristics in rubber foam depended on the various factors such as the type and content of blowing agents, the foaming temperature and formulation of rubber compound [3].
Labrincha, Mechanical and acoustical characteristics of bound rubber granulate, J.
Sipaut, Correlation between the acoustic and dynamic mechanical properties of natural rubber foam: Effect of foaming temperature, Mater.
Okieimen, Rheological mechanical properties of natural rubber reinforced with agricultural by product, J.
The cell characteristics in rubber foam depended on the various factors such as the type and content of blowing agents, the foaming temperature and formulation of rubber compound [3].
Labrincha, Mechanical and acoustical characteristics of bound rubber granulate, J.
Sipaut, Correlation between the acoustic and dynamic mechanical properties of natural rubber foam: Effect of foaming temperature, Mater.
Okieimen, Rheological mechanical properties of natural rubber reinforced with agricultural by product, J.
Online since: February 2014
Authors: Bharoto Bharoto, Tri Hardi Priyanto, Rifai Muslih, Herry Mugirahardjo
This indicates a change in crystallite size that affects the behavior of plastic deformation in the welded material.
Fundamentally, FSW is a severe thermo-mechanical deformation process; it relies on extensive thermo-mechanical deformation to develop the metallurgical bonding.
The key factors contributing to a successful FSW operation are the temperature and stress distributions during the process, particularly the temperature and stresses near the rotating tool where the materials is stirred and metallurgical bond is formed.
The deep penetration capability of neutron into most metallic materials makes neutron diffraction a unique and powerful tool for the investigation of their structures and properties [3].
The deformation is divided into three zones, namely stir zone (SZ), thermo-mechanically affected zone (TMAZ) and heat affected zone (HAZ).
Fundamentally, FSW is a severe thermo-mechanical deformation process; it relies on extensive thermo-mechanical deformation to develop the metallurgical bonding.
The key factors contributing to a successful FSW operation are the temperature and stress distributions during the process, particularly the temperature and stresses near the rotating tool where the materials is stirred and metallurgical bond is formed.
The deep penetration capability of neutron into most metallic materials makes neutron diffraction a unique and powerful tool for the investigation of their structures and properties [3].
The deformation is divided into three zones, namely stir zone (SZ), thermo-mechanically affected zone (TMAZ) and heat affected zone (HAZ).
Online since: April 2015
Authors: Hao Huang, Zhen Xi Li, Min Juan Wang, Chuan Xie
All these properties make it a suitable coating material for dry cutting and high speed machining applications[5].
Substrate bias (Vb) is a very important parameter for deposition and can obviously improve the ionization and bombarding energy of incoming ions, affecting the composition, microstructure and properties of Ti-Al-N films.
The comparison research on the effects of Vb on the structural and mechanical properties for Ti-Al-N films with different Al content is very useful to understand their relationships.
The mechanical properties were evaluated by MTS Nanoindenter XP with continuous stiffness measurements (CSM) mode, in which a Berkovitch-type pyramidal diamond tip indented the films to a maximum depth of 500 nm, and at least six indentations at different places on the film surface were made.
All factors contributed to residual stress determines jointly the stress evolution, thus the different stress variation with Vb occurs in TiAlN and Ti3AlN films.
Substrate bias (Vb) is a very important parameter for deposition and can obviously improve the ionization and bombarding energy of incoming ions, affecting the composition, microstructure and properties of Ti-Al-N films.
The comparison research on the effects of Vb on the structural and mechanical properties for Ti-Al-N films with different Al content is very useful to understand their relationships.
The mechanical properties were evaluated by MTS Nanoindenter XP with continuous stiffness measurements (CSM) mode, in which a Berkovitch-type pyramidal diamond tip indented the films to a maximum depth of 500 nm, and at least six indentations at different places on the film surface were made.
All factors contributed to residual stress determines jointly the stress evolution, thus the different stress variation with Vb occurs in TiAlN and Ti3AlN films.
Online since: July 2012
Authors: Yu Ping Dong, Fei Qiang Guo
Table 1 summarizes the properties of herb residues.
Table 1 Properties of herb residue Fuel Herb residues Proximate [wt.%] Moisture 12.5 V 72.62 FC 12.41 Ash 2.47 Ultimate [wt.
Results and discussion Temperature and pressure profiles Operating temperature is one of the most important factor affecting the working performance of the fluidized gasifier, and T1, T3, T5, T7 are chosen to represent the temperature of the riser.
The results indicate that the biomass and air feed rates are important influencing factors of the temperature.
Effect of O/B The O/B ratio (g/g) is a crucial factor that affects the performance of the gasification process.
Table 1 Properties of herb residue Fuel Herb residues Proximate [wt.%] Moisture 12.5 V 72.62 FC 12.41 Ash 2.47 Ultimate [wt.
Results and discussion Temperature and pressure profiles Operating temperature is one of the most important factor affecting the working performance of the fluidized gasifier, and T1, T3, T5, T7 are chosen to represent the temperature of the riser.
The results indicate that the biomass and air feed rates are important influencing factors of the temperature.
Effect of O/B The O/B ratio (g/g) is a crucial factor that affects the performance of the gasification process.
Online since: February 2012
Authors: Yu Shan Lu, Cheng Yi Zhao, Zhi Hui Kou, Jun Wang
Introduction
Chemical-Mechanical Polishing (CMP) is a process of combining with chemical and mechanical reaction.
Based on the common polishing pad material types, material properties and surface structure in CMP process, Xiong Wei summed up the influences of polishing pads to the CMP process[5].
Phyllotactic pattern acquires with special geometry, physical and chemical properties of biological structure arrangements, which have been obtained by the biological evolution and natural selection.
These are very important factors for improving the polishing ability of the polishing pad.
In Fig.2, choosing the material of the based pad of the polishing pad is mainly based on the requirement of the mechanical and electrochemical properties of materials.
Based on the common polishing pad material types, material properties and surface structure in CMP process, Xiong Wei summed up the influences of polishing pads to the CMP process[5].
Phyllotactic pattern acquires with special geometry, physical and chemical properties of biological structure arrangements, which have been obtained by the biological evolution and natural selection.
These are very important factors for improving the polishing ability of the polishing pad.
In Fig.2, choosing the material of the based pad of the polishing pad is mainly based on the requirement of the mechanical and electrochemical properties of materials.
Online since: October 2013
Authors: Miao Jiang, Ying Wang
Table 1: Risk factors schedule
NO.
Risk factors NO.
Risk factors NO.
Risk factors 1 Market risk 9 Economic risk 17 Main shop selection risk 2 Supply and demand change risk 10 Financing risk 18 Marketing risk 3 Business competition risk 11 Property mortgage risk 19 Marketing planning risk 4 Market mutation risk 12 Operating companies choose risk 20 Business image planning risk 5 Property management risk 13 Maintenance promote risk 21 Property Management Risk 6 Policy adjustment risk 14 Forms portfolio risk 22 Businesses manage risk 7 Tax risk 15 Managing Risk 23 Merchants operational risk 8 Shop mortgage risk 16 Technical risks 2.2 Risk factors diagram constructed According to the theory of ISM principle, to determine the risk factors affecting commercial real estate operations and their relations can be achieved through the process of dialogue to build up expert matrix and interpret structural model.
Beijing: Mechanical Industry Press. 2007
Risk factors NO.
Risk factors NO.
Risk factors 1 Market risk 9 Economic risk 17 Main shop selection risk 2 Supply and demand change risk 10 Financing risk 18 Marketing risk 3 Business competition risk 11 Property mortgage risk 19 Marketing planning risk 4 Market mutation risk 12 Operating companies choose risk 20 Business image planning risk 5 Property management risk 13 Maintenance promote risk 21 Property Management Risk 6 Policy adjustment risk 14 Forms portfolio risk 22 Businesses manage risk 7 Tax risk 15 Managing Risk 23 Merchants operational risk 8 Shop mortgage risk 16 Technical risks 2.2 Risk factors diagram constructed According to the theory of ISM principle, to determine the risk factors affecting commercial real estate operations and their relations can be achieved through the process of dialogue to build up expert matrix and interpret structural model.
Beijing: Mechanical Industry Press. 2007
Online since: November 2012
Authors: J. Grabis, Ints Šteins, Dz. Rašmane
Both factors determined difference of the crystallite size of the components.
Kang, Densification and mechanical properties of titanium diboride with silicon nitride as a sintering aid, J.
Kang, Sintering and mechanical properties of titanium diboride with aluminum nitride as a sintering aid, J.
Liu, Effect of (Ni, Mo) and TiN on the microstructure and mechanical properties of TiB2 ceramic tool materials, Mater.
Huang, Influence of titanium diboride on the microstructure and mechanical properties of silicon nitride ceramic, Mater.
Kang, Densification and mechanical properties of titanium diboride with silicon nitride as a sintering aid, J.
Kang, Sintering and mechanical properties of titanium diboride with aluminum nitride as a sintering aid, J.
Liu, Effect of (Ni, Mo) and TiN on the microstructure and mechanical properties of TiB2 ceramic tool materials, Mater.
Huang, Influence of titanium diboride on the microstructure and mechanical properties of silicon nitride ceramic, Mater.
Online since: May 2019
Authors: Qing Sheng Yang, Jia qi Zhu, Xia Liu
As a single-atomic-layer material, graphene may form strong interface bonding with metal and enhance the properties of the composite due to the large surface area and extraordinary mechanical properties [3].
Subsequently, the compression experiments on micro-pillars done by Feng et al. [7] showed that the arrangement of graphene was a critical factor affecting the strength of composite, so the importance of structural design is emphasized.
In this study, the mechanical properties of Gr/Al nano-laminated composite under tensile loading are investigated using the MD simulation.
Subsequently, the worse mechanical properties along out-plane direction cased by the stacked graphene structure is studied.
Wang, Interface mechanical properties of graphene reinforced copper nanocomposites, Mater Res Express. 4 (2017) 115020
Subsequently, the compression experiments on micro-pillars done by Feng et al. [7] showed that the arrangement of graphene was a critical factor affecting the strength of composite, so the importance of structural design is emphasized.
In this study, the mechanical properties of Gr/Al nano-laminated composite under tensile loading are investigated using the MD simulation.
Subsequently, the worse mechanical properties along out-plane direction cased by the stacked graphene structure is studied.
Wang, Interface mechanical properties of graphene reinforced copper nanocomposites, Mater Res Express. 4 (2017) 115020
Online since: January 2016
Authors: Wen Xiang Zhao, Xi Bin Wang, Li Ping Ma, Zhi Qiang Liang, Tian Feng Zhou, Pei Yan, Li Jiao
Consequently, the reduction of tool wear during milling aluminum alloy can be mainly attributed to the improvement of mechanical properties of carbide tool materials after pulsed magnetic treatment.
However, this approach has not been widely applied yet, since the mechanism of magnetic treatment of tools is not clear and treatment results are affected by many factors.
In order to investigate the effect of pulsed magnetic treatment on the mechanical properties of materials, a pulsed magnetic treatment system was designed and produced in our previous work[5].
In minor flank area, as the friction action between tool and workpiece is a main factor, the decrease in minor flank wear can be mainly attributed to the improvement of material mechanical properties of tool materials after pulsed magnetic treatment.
Consequently, wear reduction can be mainly attributed to the improvement of material mechanical properties of tool materials after pulsed magnetic treatment.
However, this approach has not been widely applied yet, since the mechanism of magnetic treatment of tools is not clear and treatment results are affected by many factors.
In order to investigate the effect of pulsed magnetic treatment on the mechanical properties of materials, a pulsed magnetic treatment system was designed and produced in our previous work[5].
In minor flank area, as the friction action between tool and workpiece is a main factor, the decrease in minor flank wear can be mainly attributed to the improvement of material mechanical properties of tool materials after pulsed magnetic treatment.
Consequently, wear reduction can be mainly attributed to the improvement of material mechanical properties of tool materials after pulsed magnetic treatment.