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Effects of Wall Thickness and Crush Initiators Position under Experimental Drop Test on Square Tubes
Online since: June 2017
Authors: Jos Istiyanto, M. Malawat, D.A. Sumarsono
The chemical composition and mechanical properties of materials are shown in Table 1 and Table 2.
Mechanical Properties of Materials Specimen Code Tensile Strength (MPa) Yield Strength (MPa) A 353 255 C 696 470 Experimental Procedure.
Especially for specimen code A having a thickness of 0.6 mm and mechanical properties of tensile strength 353 MPa, the destruction took place not only on the edge of the square tubes where crush initiators were located and the initial crush occurred, but also on the other edge of the square tube, where a little damage was detected.
For specimen code C having thickness 1 mm and mechanical properties of tensile strength 696 MPa, the destruction occurred only on the edge of the square tube, where crush initiators were located and the first crush occurred.
The crush initiators position on thin-walled square tubes affects IEA performance.
Mechanical Properties of Materials Specimen Code Tensile Strength (MPa) Yield Strength (MPa) A 353 255 C 696 470 Experimental Procedure.
Especially for specimen code A having a thickness of 0.6 mm and mechanical properties of tensile strength 353 MPa, the destruction took place not only on the edge of the square tubes where crush initiators were located and the initial crush occurred, but also on the other edge of the square tube, where a little damage was detected.
For specimen code C having thickness 1 mm and mechanical properties of tensile strength 696 MPa, the destruction occurred only on the edge of the square tube, where crush initiators were located and the first crush occurred.
The crush initiators position on thin-walled square tubes affects IEA performance.
Online since: July 2020
Authors: Ari Adi Wisnu, Setyo Purwanto, Deswita Deswita, Yose Fachmi Buys, Didin Sahidin Winatapura
The fitting quality of the experimental data was checked using the goodness of fit (c2) and two reliability factors (Rp and Rwp).
Mn3+ and Zn2+ substitution for F3+ ions were found to be affected the magnetic properties.
Manaf, Structural and Magnetic Properties of (Ba1-xLax)Fe12O19 Obtained by Mechanical Alloying and Ultrasonic Irradiation, AIP Conf.
Sharma, Effect of La on Magnetic Properties of BaFe12O19, Trans.
Manaf, Structural and Magnetic Properties Characterization of Mechanical Alloyed La Substituted Ba(1-x)LaxFe12O19(x=0.07,0.15,0.20), AIP Conf.
Mn3+ and Zn2+ substitution for F3+ ions were found to be affected the magnetic properties.
Manaf, Structural and Magnetic Properties of (Ba1-xLax)Fe12O19 Obtained by Mechanical Alloying and Ultrasonic Irradiation, AIP Conf.
Sharma, Effect of La on Magnetic Properties of BaFe12O19, Trans.
Manaf, Structural and Magnetic Properties Characterization of Mechanical Alloyed La Substituted Ba(1-x)LaxFe12O19(x=0.07,0.15,0.20), AIP Conf.
Online since: April 2012
Authors: Guo Song Ning, Ming Ming Chen, Ming Deng
Closed extruding fine blanking parts is processed under strong hydrostatic pressure, material microstate and mechanical properties near the surface change greatly.
Introduction Closed extruding fine blanking parts is processed under strong hydrostatic pressure, material of deformation area happened great extruding cut deformation, microstate and mechanical properties near the surface change greatly, such as surface hardening is obvious, residual stress is larger, etc, which directly affect parts’ wear resistance, so it is necessary to research the wear resistance of closed extruding fine blanking parts surface to promote this technology applications.
Friction process is a very complicated process; friction coefficient is different not only with different material, but also with other factors, friction coefficient.
Introduction Closed extruding fine blanking parts is processed under strong hydrostatic pressure, material of deformation area happened great extruding cut deformation, microstate and mechanical properties near the surface change greatly, such as surface hardening is obvious, residual stress is larger, etc, which directly affect parts’ wear resistance, so it is necessary to research the wear resistance of closed extruding fine blanking parts surface to promote this technology applications.
Friction process is a very complicated process; friction coefficient is different not only with different material, but also with other factors, friction coefficient.
Online since: July 2012
Authors: Zeng Wu Zhao, Zhi Jing Zhang, Xu Yao Sun, Xin Jin, Yong Jun Deng
On the contrary, finite element simulation of turn-milling process can avoid these shortcomings effectively, and also can get the material mechanical properties and physical properties, which is difficult for experiments.
Fig.1 Turn-milling schematic The cutting speed is determined by rotational speed of milling-tool and workpiece, in which the milling-tool rotational speed is the main factor.
(1) Material Constitutive Model and Parameters The Johnson-Cook model was adopted as the material model, and the equivalent flow stress is defined as follows, The material of workpiece is aluminum A357, a kind of widely used alloy due to good casting properties, and good mechanical properties, physical properties, corrosion resistance and mechanical machining properties after modification and heat treatment.
It is the same in turn-milling process, the cutting depth greatly determines the cutting force in turn-milling, and then in turn affects the cutting heat, and further affects the tool wear, workpiece surface quality and machining accuracy.
[5] Kitahara.T, Ishikawa.Y,et al: Development of a Micro-Lathe, Mechanical Engineering Lab Report Vol. 50 (1996), p.117-123
Fig.1 Turn-milling schematic The cutting speed is determined by rotational speed of milling-tool and workpiece, in which the milling-tool rotational speed is the main factor.
(1) Material Constitutive Model and Parameters The Johnson-Cook model was adopted as the material model, and the equivalent flow stress is defined as follows, The material of workpiece is aluminum A357, a kind of widely used alloy due to good casting properties, and good mechanical properties, physical properties, corrosion resistance and mechanical machining properties after modification and heat treatment.
It is the same in turn-milling process, the cutting depth greatly determines the cutting force in turn-milling, and then in turn affects the cutting heat, and further affects the tool wear, workpiece surface quality and machining accuracy.
[5] Kitahara.T, Ishikawa.Y,et al: Development of a Micro-Lathe, Mechanical Engineering Lab Report Vol. 50 (1996), p.117-123
Online since: May 2012
Authors: Ren Chao Yang, Yi Jun Li, Tao Zhang, Yan Long Wang, Ai Ping Fan
According to the fracture mutual cutting relation and inclusion analysis of the fracture fillings, the structural fractures are mainly development in Yansha period and Himalayan period[9] which controls the group, shape and mechanics properties, but the development level of fractures in different groups is in the control of internal factors.
This may has something with mechanical property of mudstone.
Therefore, it becomes one of the favorable factors to the gas accumulation.
Analysis of Main Control Factors on Capacity of Gas Well in the East Area of Sulige Gas Field, Ordos Basin[J].
Analysis on Productivity Influential Factors in Sugeli Gas Field[J].
This may has something with mechanical property of mudstone.
Therefore, it becomes one of the favorable factors to the gas accumulation.
Analysis of Main Control Factors on Capacity of Gas Well in the East Area of Sulige Gas Field, Ordos Basin[J].
Analysis on Productivity Influential Factors in Sugeli Gas Field[J].
Online since: October 2012
Authors: Huan Sheng Mu
Engineering Properties of Soft Soil.
With the initial load, high pore water pressure often occurs in the foundation, with an affect with the foundation strength.
According to physical and mechanical properties of soil in the horizontal and vertical direction, engineering geology can be identified.
The treatment design directing at stability should be implemented when the stability safety factor is less than the allowable value of the specification.
The subgrade settlement reliability problem is a very complex issue, which includes limitations of the existing methods and uncertainties of many factors that affect the settlement, hence results hardly provide reliable data for engineering staff and the accuracy often depends on the experience of users.
With the initial load, high pore water pressure often occurs in the foundation, with an affect with the foundation strength.
According to physical and mechanical properties of soil in the horizontal and vertical direction, engineering geology can be identified.
The treatment design directing at stability should be implemented when the stability safety factor is less than the allowable value of the specification.
The subgrade settlement reliability problem is a very complex issue, which includes limitations of the existing methods and uncertainties of many factors that affect the settlement, hence results hardly provide reliable data for engineering staff and the accuracy often depends on the experience of users.
Online since: September 2013
Authors: Panphot Ruethaitananon, Tawinun Isariyamateekun, Kageeporn Wongpreedee
The temperatures had been specified for two factors including casting temperature at X1, X2 and flasking temperature at Y1, Y2.
This research had been studied and characterized the temperatures of casting effecting to physical properties of fusing metal such as thickness of interface layers and porosities.
Two types of aluminium metal interfaces at various flasking 230 °C and 250°C and casting temperatures factors 720°C and 750°C were selected.
Shows the thickness of the interface layers of the silver and aluminum from different factors Work piece No.
Ni: Structure and mechanical properties of aluminium alloy/Ag interlayer/steel non-centered electron beam welded joints, Transaction of nonferrous metals society of chaina, (2011) [5] F.B.
This research had been studied and characterized the temperatures of casting effecting to physical properties of fusing metal such as thickness of interface layers and porosities.
Two types of aluminium metal interfaces at various flasking 230 °C and 250°C and casting temperatures factors 720°C and 750°C were selected.
Shows the thickness of the interface layers of the silver and aluminum from different factors Work piece No.
Ni: Structure and mechanical properties of aluminium alloy/Ag interlayer/steel non-centered electron beam welded joints, Transaction of nonferrous metals society of chaina, (2011) [5] F.B.
Online since: April 2022
Authors: Gerald Mari O. Quiachon, Persia Ada N. de Yro, Geraldine H. Cariño, Czharl John Dilbert C. Sargento
These properties are relevant to different antibacterial applications of the nanocomposite.
Properties of the interphase region are known to be different from the bulk of the polymer [4].
Zhang, Properties of Graphene Oxide/epoxy Resin COMPOSITES, Journal of Nanomaterials (2014), 1-5
Guo, Effects of temperature and frequency on dynamic mechanical properties of glass/epoxy composites, Journal of Materials Science 51 (2015), 2747-2758
Zhang, Properties of Graphene Oxide/epoxy Resin Composites, Journal of Nanomaterials (2014), 1-5
Properties of the interphase region are known to be different from the bulk of the polymer [4].
Zhang, Properties of Graphene Oxide/epoxy Resin COMPOSITES, Journal of Nanomaterials (2014), 1-5
Guo, Effects of temperature and frequency on dynamic mechanical properties of glass/epoxy composites, Journal of Materials Science 51 (2015), 2747-2758
Zhang, Properties of Graphene Oxide/epoxy Resin Composites, Journal of Nanomaterials (2014), 1-5
Online since: January 2013
Authors: Jing Bin Zhu, Cong Ling Li, Yong Ning Bian
China
aybian@dlut.edu.cn
Keywords: Steady Flow, Dimensions, Wave Factor, Equal Pumping Power, Mass Transfer
Abstract.
The results showed that the wavelength and amplitude of the wavy-walled tubes obviously affect the fluid flow and mass transfer characteristics.
Many investigators devoted their efforts to study on the mechanical properties of channels with different shapes.
Then, in order to investigate the combined effects of the wavelength and the amplitude, the relationship between the wave factor Fw, defined as formula (1), and the Rec as well as the critical friction factor fc corresponding to the Rec are shown in Fig.4(c) and (d), respectively.
The Sherwood number Sh increases for increasing the wave factor Fw at the same Re.
The results showed that the wavelength and amplitude of the wavy-walled tubes obviously affect the fluid flow and mass transfer characteristics.
Many investigators devoted their efforts to study on the mechanical properties of channels with different shapes.
Then, in order to investigate the combined effects of the wavelength and the amplitude, the relationship between the wave factor Fw, defined as formula (1), and the Rec as well as the critical friction factor fc corresponding to the Rec are shown in Fig.4(c) and (d), respectively.
The Sherwood number Sh increases for increasing the wave factor Fw at the same Re.
Online since: September 2007
Authors: Hannalie Lombard, M. Neil James, D.G. Hattingh, Axel Steuwer
Contributory factors include weld phenomena such as dilution of the filler metal and
differential heat flow.
These lead to graded microstructures, variable and unknown residual stresses, and highly variable mechanical properties across the weld zone.
Such an improvement would require better understanding of the factors that influence fatigue performance of welded joints.
Friction Stir Welding of AA 5083-H321 A detailed discussion of the techniques used to relate weld process parameters to energy input, and hence to residual stresses, mechanical properties and performance under dynamic loading is given in Lombard et al, Engng Fract.
Frictional power correlates well with tensile properties and with fatigue performance, as is demonstrated in Fig. 3 and can be related to the process input parameters of tool speed and feed (Fig. 4).
These lead to graded microstructures, variable and unknown residual stresses, and highly variable mechanical properties across the weld zone.
Such an improvement would require better understanding of the factors that influence fatigue performance of welded joints.
Friction Stir Welding of AA 5083-H321 A detailed discussion of the techniques used to relate weld process parameters to energy input, and hence to residual stresses, mechanical properties and performance under dynamic loading is given in Lombard et al, Engng Fract.
Frictional power correlates well with tensile properties and with fatigue performance, as is demonstrated in Fig. 3 and can be related to the process input parameters of tool speed and feed (Fig. 4).