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Online since: May 2016
Authors: Wen Hong Tao, Xing Hua Fu, Yue Zhao, Duo Zhao, Guo Yuan Cheng, Li Ping Zhao, Wen Xin Ma
The other properties was measured by aglient pricision impedance tester.
The impurity phase affected the property of ceramics.
Mechanical properties and phase transition of biomedical titanium alloy strips with initial quasi-single phase state under high-energy electropulses.
Effects of high-energy electro-pulsing treatment on microstructure, mechanical properties and corrosion behavior of Ti–6Al–4V alloy.
Influence of Ta5+Doping on the Piezoelectric Properties of KNN Ceramics[J].
The impurity phase affected the property of ceramics.
Mechanical properties and phase transition of biomedical titanium alloy strips with initial quasi-single phase state under high-energy electropulses.
Effects of high-energy electro-pulsing treatment on microstructure, mechanical properties and corrosion behavior of Ti–6Al–4V alloy.
Influence of Ta5+Doping on the Piezoelectric Properties of KNN Ceramics[J].
Online since: October 2012
Authors: Hui Zhang, Tie Hang Wang, Xing She Lu
The engineering properties of unsaturated loess in shallow strata are key factors that determine whether the projects will succeed or not.
A shallow stratum is directly exposed in nature, and natural factors affect physical and mechanical properties of the soil, with water content being increased because of the infiltration of rainwater in summer and autumn, and moisture being accumulated at the frozen interface because of soil freezing in winter.
After the thawing of soil in spring, there will be a layer of high water content at the frozen interface, which may give rise to problems such as the decline of bearing capacity, increase in settlement, instability of pit and landslide, thus directly affecting the safety of projects.
Influence of freeze-thaw on mechanical properties of Lanzhou loess[J].
Analysis of structural deformation properties of collapsible loess[J] .
A shallow stratum is directly exposed in nature, and natural factors affect physical and mechanical properties of the soil, with water content being increased because of the infiltration of rainwater in summer and autumn, and moisture being accumulated at the frozen interface because of soil freezing in winter.
After the thawing of soil in spring, there will be a layer of high water content at the frozen interface, which may give rise to problems such as the decline of bearing capacity, increase in settlement, instability of pit and landslide, thus directly affecting the safety of projects.
Influence of freeze-thaw on mechanical properties of Lanzhou loess[J].
Analysis of structural deformation properties of collapsible loess[J] .
Online since: June 2010
Authors: Marcello Cabibbo, Stefano Spigarelli, A. Fabrizi, C. Paternoster, R. Cecchini, P.V. Kiryukhantsev-Korneev, Marie Haidopoulo
Mechanical properties.
Mechanical properties of the Ti-Cr-B-N and Ti-Al-Si-B-N coatings were inferred by nanoindentation.
Morphology and texture can influence mechanical properties of coatings [80].
One of the main factors affecting the Young's modulus is the nature of the atomic bonding, which is related to the atomic configuration of each component of the material.
Mechanical properties of all layers are degraded compared with as-deposited coatings.
Mechanical properties of the Ti-Cr-B-N and Ti-Al-Si-B-N coatings were inferred by nanoindentation.
Morphology and texture can influence mechanical properties of coatings [80].
One of the main factors affecting the Young's modulus is the nature of the atomic bonding, which is related to the atomic configuration of each component of the material.
Mechanical properties of all layers are degraded compared with as-deposited coatings.
Online since: March 2022
Authors: Izzaty Mohd Zambri, Suhana Mohamed Sultan, Yusmeeraz Yusof, Mitra Mohd Addi, Mathan Natarajamoorthy
These factors affect in bundling of MWCNT, which MWCNT re-agglomerate immediately and disturbs the electrical formative in polymer composite electrode [24].
There could be other factors the dispersion of MWCNT with toluene in a short period.
Rivolo, “Experimental study of PDMS mechanical properties for the optimization of polymer based flexible pressure micro-sensors Experimental study of PDMS mechanical properties for the optimization of polymer based flexible pressure micro-sensors,” 2016
Soutis, “The Effect of Shear Mixing Speed and Time on the Mechanical Properties of GNP/Epoxy Composites,” Appl.
Yeoh, “The properties of epoxy/graphene conductive materials using high speed mechanical stirrer and bath sonicator,” Mater.
There could be other factors the dispersion of MWCNT with toluene in a short period.
Rivolo, “Experimental study of PDMS mechanical properties for the optimization of polymer based flexible pressure micro-sensors Experimental study of PDMS mechanical properties for the optimization of polymer based flexible pressure micro-sensors,” 2016
Soutis, “The Effect of Shear Mixing Speed and Time on the Mechanical Properties of GNP/Epoxy Composites,” Appl.
Yeoh, “The properties of epoxy/graphene conductive materials using high speed mechanical stirrer and bath sonicator,” Mater.
Online since: June 2013
Authors: Charlotte Florimond, Hossein Ramezani-Dana, Emmanuelle Vidal-Sallé
In order to be able to properly evaluate the in-use mechanical properties of high performance composite materials, it is useful to identify all the critical operations of the forming process which can degrade the row materials (i.e. the yarns for continuous fibre reinforcements).
Introduction The increasing use of composite materials for structural parts implies an increase of their mechanical properties for a decreasing cost.
The same studies showed that the weaving process itself has a great influence on the final mechanical properties of the textile reinforcement.
That effect is not exactly the same for the warp and weft directions but both are affected.
Reproducing the loom conditions As mentioned in the introduction, friction is one of the most critical phenomena which participate to the degradation of the mechanical properties of textile reinforcements during the weaving process.
Introduction The increasing use of composite materials for structural parts implies an increase of their mechanical properties for a decreasing cost.
The same studies showed that the weaving process itself has a great influence on the final mechanical properties of the textile reinforcement.
That effect is not exactly the same for the warp and weft directions but both are affected.
Reproducing the loom conditions As mentioned in the introduction, friction is one of the most critical phenomena which participate to the degradation of the mechanical properties of textile reinforcements during the weaving process.
Online since: August 2013
Authors: De Shen Zhao, Meng Lin Xu
Study on Influencing Factor of Ground Deformation Induced by Shield Tunneling
XU Menglin1,a ZHAO Deshen1,b
1Key Laboratory of Liaoning Province for Prediction and Control on Complicated Structure System,Dalian University, Dalian 116622, China
axumenglinxml@126.com, bzhaodeshen@dlu.edu.cn.
This paper focuses on the shield tunnel construction strata deformation factors.
Following specific discussion of the effect of various factors on the ground displacement.
But the stratum deformation characteristics are not affected by the geometric characteristics of the tunnel cross-section.According to Peck settling tank empirical prediction formula
(1) (2) Attewell noted that (3) D-Tunnel diameter,Z- Tunnel depth, -nternal friction angle of the soil,k and n are associated with the formation and mechanical properties and construction factors constant.
This paper focuses on the shield tunnel construction strata deformation factors.
Following specific discussion of the effect of various factors on the ground displacement.
But the stratum deformation characteristics are not affected by the geometric characteristics of the tunnel cross-section.According to Peck settling tank empirical prediction formula
(1) (2) Attewell noted that (3) D-Tunnel diameter,Z- Tunnel depth, -nternal friction angle of the soil,k and n are associated with the formation and mechanical properties and construction factors constant.
Online since: March 2013
Authors: Jatinder Kapoor, Jaimal Singh Khamba, Sehijpal Singh
Non-dominant point approach was applied to find optimal combination of different factors affecting the process performance.
Three control factors were considered in order to ascertain the effect of different wire electrodes.
The control factors were the type of wire (A), pulse on time (B) and peak current (C).
The properties of the wire electrodes are shown in Table 1.
The result of the present work identifies the significant process parameters affecting WEDM performance.
Three control factors were considered in order to ascertain the effect of different wire electrodes.
The control factors were the type of wire (A), pulse on time (B) and peak current (C).
The properties of the wire electrodes are shown in Table 1.
The result of the present work identifies the significant process parameters affecting WEDM performance.
Online since: July 2014
Authors: Pei Rong Zhang, Zhan Qiang Liu
Edge preparation on cutting force, cutting temperature and tool wear for hard turning
Peirong ZHANG1, 2, a, Zhanqiang LIU1, 2, b *
1School of Mechanical Engineering, Shandong University, Jinan 250061, P.
China 2Key Laboratory of High Efficiency and Clean Mechanical Manufacture, Ministry of Education, P.
Choudhury et al. [10] studied the effects of edge chamfer height and chamfer angle on cutting forces and observed that chamfer height and angle mainly affect thrust (feed) force.
Simulation Details Properties of Material and Cutting Tools. 4Cr5MoSiV1 mold steel (AISI H13) was machined in the simulations, whose nominal chemical compositions are shown in Table 1.
Table 1 Chemical composition of AISI H13 mold steel [mass, %] Elements C Si Mn Cr Mo V P S W% 0.32-0.45 0.80-1.20 0.20-0.50 4.75-5.50 1.10-1.75 0.80-1.20 ≤0.03 ≤0.03 Table 2 Cutting edge parameters for FEM simulation Factors Levels Illustration K 0.25 0.5 1 2 4 K=Sγ/Sα, S=(Sγ+Sα)/2=45 μm, γ=α=10 dec Sγ[μm] 18 30 45 60 72 Sα[μm] 72 60 45 30 18 Nowadays, coating technology such as PVD, CVD and also PCVD has become mature enough to suffer high cutting force and temperature.
China 2Key Laboratory of High Efficiency and Clean Mechanical Manufacture, Ministry of Education, P.
Choudhury et al. [10] studied the effects of edge chamfer height and chamfer angle on cutting forces and observed that chamfer height and angle mainly affect thrust (feed) force.
Simulation Details Properties of Material and Cutting Tools. 4Cr5MoSiV1 mold steel (AISI H13) was machined in the simulations, whose nominal chemical compositions are shown in Table 1.
Table 1 Chemical composition of AISI H13 mold steel [mass, %] Elements C Si Mn Cr Mo V P S W% 0.32-0.45 0.80-1.20 0.20-0.50 4.75-5.50 1.10-1.75 0.80-1.20 ≤0.03 ≤0.03 Table 2 Cutting edge parameters for FEM simulation Factors Levels Illustration K 0.25 0.5 1 2 4 K=Sγ/Sα, S=(Sγ+Sα)/2=45 μm, γ=α=10 dec Sγ[μm] 18 30 45 60 72 Sα[μm] 72 60 45 30 18 Nowadays, coating technology such as PVD, CVD and also PCVD has become mature enough to suffer high cutting force and temperature.
Online since: May 2012
Authors: N. Ali, A. Kassim, Mohd Fakhrurrazi Ishak
The use of theory of limit equilibrium of forces and moments to compute the FOS (Factor Of Safety) against failure.
Result and Discussion Soil Properties The disturbed and undisturbed soil samples were collected from near the ground surface up to 1.5 m depth of the study area.
A series of laboratory testing were conducted to determined soil properties, which can determine the soil type and geotechnical properties.
The main physical index property of the soils investigated in this study was soil classification, which depends on several factors such as the Atterberg limits, specific gravity and particle size distribution.
Quantifying the mechanical and hydrologic effects of Riparian vegetation on stream- bank stability.
Result and Discussion Soil Properties The disturbed and undisturbed soil samples were collected from near the ground surface up to 1.5 m depth of the study area.
A series of laboratory testing were conducted to determined soil properties, which can determine the soil type and geotechnical properties.
The main physical index property of the soils investigated in this study was soil classification, which depends on several factors such as the Atterberg limits, specific gravity and particle size distribution.
Quantifying the mechanical and hydrologic effects of Riparian vegetation on stream- bank stability.
Online since: January 2014
Authors: Fa Jun Ding
Based on the analysis of the piston engine camshaft common failure mode, combining the mechanical analysis and risk management means,the feasibility of its repair was much discussed, the repair technique are studied, and proved its correctness and effectiveness.
Therefore, as long as the cam contour grinding quantity is not big, hardness on the surface of the cam will not change; its wear resistance will not be affected.
The camshaft is bad working conditions; the camshaft quality factors (such as the accuracy of type lines, accuracy of form and position, surface roughness, etc.) is sensitive to the work reliability of cam and engine performance, any quality factors are likely to cause a serious accident.
Using CNC camshaft grinding machine can not only basically eliminated all kinds of defects of the cam profile after grinding (e.g., surface burns, the chatter marks), cam contour lines maximum error is less than 0.01 mm, greatly ensure the quality of the cam repair; but also man-made factors affecting is small, conducive to ensure the stability of quality, at the same time also do not need additional tooling, camshaft repair can be directly to the clamping and not reduce the clamping precision.
Profile accuracy detection Cam contour lines not only affect the engine valve-train performance (i.e., the valve’s ability can pass) and dynamic performance (such as impact load between the cam and tappet body), but also affect the contact stress and lubricating properties between cam and tappet body.
Therefore, as long as the cam contour grinding quantity is not big, hardness on the surface of the cam will not change; its wear resistance will not be affected.
The camshaft is bad working conditions; the camshaft quality factors (such as the accuracy of type lines, accuracy of form and position, surface roughness, etc.) is sensitive to the work reliability of cam and engine performance, any quality factors are likely to cause a serious accident.
Using CNC camshaft grinding machine can not only basically eliminated all kinds of defects of the cam profile after grinding (e.g., surface burns, the chatter marks), cam contour lines maximum error is less than 0.01 mm, greatly ensure the quality of the cam repair; but also man-made factors affecting is small, conducive to ensure the stability of quality, at the same time also do not need additional tooling, camshaft repair can be directly to the clamping and not reduce the clamping precision.
Profile accuracy detection Cam contour lines not only affect the engine valve-train performance (i.e., the valve’s ability can pass) and dynamic performance (such as impact load between the cam and tappet body), but also affect the contact stress and lubricating properties between cam and tappet body.