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Online since: October 2014
Authors: Gleb A. Turichin, V.V. Somonov, Olga G. Klimova-Korsmik
The article also describes the research of layer microstructure, deposited by high power fiber laser cladding, and result of analysis of the dependence metal properties from the transition-layer cladding mode.
Finally, the task of the flow of vapor jets, falling on the surface of the substrate, defines the field of gas velocity, affecting the transfer of powder.
We assume that the powder forms dense packing with factor of packaging equal 0.74.
This allows us to predict high mechanical properties of the coating, as the floor consists mainly of the added metal.
Tret’yakov, “The analysis of influence of parameters of coaxial laser cladding on the formation of beads”, “Technology of mechanical engineering.
Finally, the task of the flow of vapor jets, falling on the surface of the substrate, defines the field of gas velocity, affecting the transfer of powder.
We assume that the powder forms dense packing with factor of packaging equal 0.74.
This allows us to predict high mechanical properties of the coating, as the floor consists mainly of the added metal.
Tret’yakov, “The analysis of influence of parameters of coaxial laser cladding on the formation of beads”, “Technology of mechanical engineering.
Online since: September 2017
Authors: Mikhail M. Kosukhin, N.A. Shapovalov, A.M. Kosukhin
The article also studies the colloid and chemical properties of the obtained modifier and the properties of the concrete compounds and the concrete with its application.
Stability of properties is to remain while changing of cement and aggregate properties, as well as in case of high and low temperature influence in the ambient medium.
It doesn not affect the functional properties, but it worsens consumer qualities of MM due to the appearance of pungent odor in a ready-made product.
Physico-mechanical, operational and technological properties of concrete compounds and concretes, modified by SB-7 were studied in the article.
Influence of molecular mass of superplasticiser on properties of concret.
Stability of properties is to remain while changing of cement and aggregate properties, as well as in case of high and low temperature influence in the ambient medium.
It doesn not affect the functional properties, but it worsens consumer qualities of MM due to the appearance of pungent odor in a ready-made product.
Physico-mechanical, operational and technological properties of concrete compounds and concretes, modified by SB-7 were studied in the article.
Influence of molecular mass of superplasticiser on properties of concret.
Online since: December 2016
Authors: Robiul Islam Rubel, Md Jafor Iqball, Md Emdadul Hoque
Table 1 shows the properties of selected material that possess sufficient mechanical properties to be applied for selected lighter vehicle model.
In this case 3D mesh generated which is shown in Fig. 2(b) with properties of mesh body in Table 2.
Modal analysis is the study of the dynamic properties of structures under vibrational excitation.
(ii) Comparison study of mechanical properties among existing shaft material and locally available material.
Zelong Le, Stress concentration factors due to typical geometric discontinuities for shaft design by numerical simulation, 120th ASEE Ann.
In this case 3D mesh generated which is shown in Fig. 2(b) with properties of mesh body in Table 2.
Modal analysis is the study of the dynamic properties of structures under vibrational excitation.
(ii) Comparison study of mechanical properties among existing shaft material and locally available material.
Zelong Le, Stress concentration factors due to typical geometric discontinuities for shaft design by numerical simulation, 120th ASEE Ann.
Online since: May 2010
Authors: Lin Zhang, Qin Na Fan, Shao Qing Wang, Cai Bei Zhang
The relaxation factor clearly reveals two relaxation
processes involving in slow relaxation and fast relaxation of the quenched liquid TiAl film.
Concerning the studied film, the obtained results reveal how quenched temperatures affect local structure changes.
Introduction As an important intermetallic compounds, there is increasing scientific and commercial interest in the development of nano-structured titanium aluminides films due to their unique mechanical, electronic, magnetic, and optical properties [1,2].
Hence, to properly control final microstructures and properties, knowledge of the crystallization kinetics of the film is required.
The quenched temperature strongly affects interchange movements among the atoms.
Concerning the studied film, the obtained results reveal how quenched temperatures affect local structure changes.
Introduction As an important intermetallic compounds, there is increasing scientific and commercial interest in the development of nano-structured titanium aluminides films due to their unique mechanical, electronic, magnetic, and optical properties [1,2].
Hence, to properly control final microstructures and properties, knowledge of the crystallization kinetics of the film is required.
The quenched temperature strongly affects interchange movements among the atoms.
Online since: December 2018
Authors: Satoshi Sunada, Yoshitaka Matsui, Syogo Takeuchi, Taku Iwaoka, Koichi Sato, Masahiko Hatakeyama
Fig.2 shows the mechanical properties of these alloys obtained by bending test.
Polarization curves measurement These alloys were measured polarization curves to examine the basic electrochemical properties of it.
In the case of Bi added alloy, precipitates of Mg3Bi2 which were observed around grain boundary and interior of grains enhance cathodic reaction. 3) From the view point of mechanical properties and corrosion resistance, addition of 1.0 vol% Sn in magnesium shows best performance in the alloys.
Fig. 2 Mechanical properties of sintered Mg-1.0vol.
Fig. 2 Mechanical properties of sintered Mg-1.0vol.
Polarization curves measurement These alloys were measured polarization curves to examine the basic electrochemical properties of it.
In the case of Bi added alloy, precipitates of Mg3Bi2 which were observed around grain boundary and interior of grains enhance cathodic reaction. 3) From the view point of mechanical properties and corrosion resistance, addition of 1.0 vol% Sn in magnesium shows best performance in the alloys.
Fig. 2 Mechanical properties of sintered Mg-1.0vol.
Fig. 2 Mechanical properties of sintered Mg-1.0vol.
Online since: May 2016
Authors: J.L. Wang, W.W. Song
In the welding process, the welding residual stress and deformation are the key factor affecting the quality of welding.
Therefore, to study the changing process of residual stress in welding process is important. 7022 aluminum alloy has the high strength, wear resistance, corrosion resistance and good mechanical properties.
The input of the physical properties of materials in the finite element analysis process is very important.
The physical properties of the material parameters are shown in Fig.2 and Fig.3, the chemical composition is shown in Table 1.
(a)The change curve of the coefficient (b)The change curve of the heat capacity of thermal conductivity Fig.2 Thermal physical properties parameters of material (a)Modulus of elasticity (b)Poisson's ratio (c)Thermal expansion coefficient Fig.3 Thermal physical properties parameters of material Table1 7022 aluminum alloy chemical composition Zn Mg Cu Fe Mn Si Cr Al 5.43 2.52 1.43 0.42 0.35 0.35 0.05 Balance Meshing dividing.
Therefore, to study the changing process of residual stress in welding process is important. 7022 aluminum alloy has the high strength, wear resistance, corrosion resistance and good mechanical properties.
The input of the physical properties of materials in the finite element analysis process is very important.
The physical properties of the material parameters are shown in Fig.2 and Fig.3, the chemical composition is shown in Table 1.
(a)The change curve of the coefficient (b)The change curve of the heat capacity of thermal conductivity Fig.2 Thermal physical properties parameters of material (a)Modulus of elasticity (b)Poisson's ratio (c)Thermal expansion coefficient Fig.3 Thermal physical properties parameters of material Table1 7022 aluminum alloy chemical composition Zn Mg Cu Fe Mn Si Cr Al 5.43 2.52 1.43 0.42 0.35 0.35 0.05 Balance Meshing dividing.
Online since: July 2012
Authors: Wei Yuan Wang, Kai Xue, Yong Xin Li
A hole in the plate affects the vein trajectory.
“Reinforcement percent” is computed as Equation 6 to evaluate the reduction of these properties.
Traditional pattern offer least improvement among several properties.
So venation growing algorithm is a multi-factor-balanced method for rib design.
Venation-like ribs provide comprehensive properties improvement because of full consideration of strain energy and shear stress.
“Reinforcement percent” is computed as Equation 6 to evaluate the reduction of these properties.
Traditional pattern offer least improvement among several properties.
So venation growing algorithm is a multi-factor-balanced method for rib design.
Venation-like ribs provide comprehensive properties improvement because of full consideration of strain energy and shear stress.
Online since: March 2013
Authors: S. Thiru. Chitrambalam, W. M. Chin, Idral Febrian, K.H. Yau, Imran Syakir Mohamad, Sharifah Bee Abdul Hamid
Thus, thermal conductivity is an extremely important factor in the development of energy-efficient heat transfer [6].
The thermal conductivity of nanofluids was measured at three difference temperature (6°C, 25°C and 45°C) using KD2 Pro Thermal Properties Analyzer.
It is well known that the smaller the size of the nanocarbon particles furnish the better thermal transport properties, since the diminishing size will offer bigger surface area for heat transfer.
Hamid, Investigations on the Thermo-physical Properties of Nanofluid-based Carbon Nanofibers under Modified Testing Conditions, Int.
Schlogl, Analysis of the Structure and Chemical Properties of some Commercial Carbon Nanostructure, Carbon 47(7) (2009) 1779-1798
The thermal conductivity of nanofluids was measured at three difference temperature (6°C, 25°C and 45°C) using KD2 Pro Thermal Properties Analyzer.
It is well known that the smaller the size of the nanocarbon particles furnish the better thermal transport properties, since the diminishing size will offer bigger surface area for heat transfer.
Hamid, Investigations on the Thermo-physical Properties of Nanofluid-based Carbon Nanofibers under Modified Testing Conditions, Int.
Schlogl, Analysis of the Structure and Chemical Properties of some Commercial Carbon Nanostructure, Carbon 47(7) (2009) 1779-1798
Online since: November 2009
Authors: Jürgen Eckert, N. Mattern, K.B. Kim, S. Pauly, Jayanta Das, Mariana Calin
This combination
of properties renders such alloys quite unique when compared to conventional crystalline materials
[2, 6].
In order to evaluate the mechanical properties under compression, cylindrical specimens with a 2:1 aspect ratio were prepared and tested under quasistatic loading at an initial strain rate of 810-4 s-1 at room temperature.
By combining the results on the mechanical properties and the microstructural investigations, it is feasible to assume that the microstructural differences in the Cu47.5Zr47.5Al5 and Cu47Ti34Zr11Ni8Si1 BMGs can give rise to the different work hardening abilities.
Consequently, the presence of the fcc nano-particles seems to be essential for ductilizing the material by effectively affecting the shear banding processes (i.e. formation and propagation of shear bands).
Moreover, the differences in elastic properties may introduce stress concentrations favoring shear band initiation in the vicinity of the nano-crystals [41].
In order to evaluate the mechanical properties under compression, cylindrical specimens with a 2:1 aspect ratio were prepared and tested under quasistatic loading at an initial strain rate of 810-4 s-1 at room temperature.
By combining the results on the mechanical properties and the microstructural investigations, it is feasible to assume that the microstructural differences in the Cu47.5Zr47.5Al5 and Cu47Ti34Zr11Ni8Si1 BMGs can give rise to the different work hardening abilities.
Consequently, the presence of the fcc nano-particles seems to be essential for ductilizing the material by effectively affecting the shear banding processes (i.e. formation and propagation of shear bands).
Moreover, the differences in elastic properties may introduce stress concentrations favoring shear band initiation in the vicinity of the nano-crystals [41].
Online since: June 2015
Authors: Kristina Zabakova Vrablova, Norbert Jendzelovsky
These vibrations can be caused e.g. by walking, jumping, or by mechanical movements, such as washing machines.
These factors affect negatively the human comfort of inhabitants.
The second model, named ‘Reduced 2D’ was also made from 2D shell elements, but the material properties were changed by reductions of stiffness and density.
Reduction factors were taken from documents by Cobiax corporation, the producer of hollow core slab systems [7].
Fig.1 Meshed part of ‘Hollow core slab 3D’ The first and the third models were made considering material properties of concrete, i.e.
These factors affect negatively the human comfort of inhabitants.
The second model, named ‘Reduced 2D’ was also made from 2D shell elements, but the material properties were changed by reductions of stiffness and density.
Reduction factors were taken from documents by Cobiax corporation, the producer of hollow core slab systems [7].
Fig.1 Meshed part of ‘Hollow core slab 3D’ The first and the third models were made considering material properties of concrete, i.e.