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Online since: June 2025
Authors: Apiwat Muttamara, Patittar Nakwong
Electrode properties of ISEM-8.
Factors including the level used in Taguchi.
The analysis evaluates the impact of three key factors: current, on-time, and duty factor, on MRR.
In this case, the relatively high Ra value suggests that the surface is uneven, with imperfections such as peaks, valleys, and debris deposition, which can adversely affect both the mechanical properties and performance of the component.
Conclusions The study identified current as a significant factor affecting both the material removal rate (MRR) and electrode wear ratio (EWR).
Factors including the level used in Taguchi.
The analysis evaluates the impact of three key factors: current, on-time, and duty factor, on MRR.
In this case, the relatively high Ra value suggests that the surface is uneven, with imperfections such as peaks, valleys, and debris deposition, which can adversely affect both the mechanical properties and performance of the component.
Conclusions The study identified current as a significant factor affecting both the material removal rate (MRR) and electrode wear ratio (EWR).
Online since: November 2013
Authors: Alexander Gorin, Moola Mohan Reddy, Abou Ei Hossein A. Khaled, D. Sujan
The analysis of variance (ANOVA) was adapted to identify the most influential factors on the CNC end milling process.
The cutting speed is found to be the most significant factor affecting the surface roughness of work piece and tool wear in end milling process.
These superior properties plays an important role in the modern manufacturing industries, especially in aerospace ,automobiles, electronics and cutting tool industries.
Methods and Materials Surface roughness is one of the important factors to measure the quality of machine components.
Literature shows that [17-19] machining parameters like feed rate, cutting speed and axial depth of cut is the most dominant factors.
The cutting speed is found to be the most significant factor affecting the surface roughness of work piece and tool wear in end milling process.
These superior properties plays an important role in the modern manufacturing industries, especially in aerospace ,automobiles, electronics and cutting tool industries.
Methods and Materials Surface roughness is one of the important factors to measure the quality of machine components.
Literature shows that [17-19] machining parameters like feed rate, cutting speed and axial depth of cut is the most dominant factors.
Online since: September 2008
Authors: F.J. Pérez, M.P. Hierro, Sofia Tsipas, F.J. Bolívar, Eugene N'Dah, L. Sánchez
Co-deposition was achieved at moderate temperatures in
order to maintain the substrates` mechanical properties.
Important factors that affect the efficiency of the conventional steam power plants are the temperature and the pressure of the input steam to the turbine.
These techniques require high temperatures and/or longer times, which limits their use to substrates that can be exposed to high temperature without degradation of their mechanical properties [23].
Therefore CVD-FBR potentially is an important alternative for the deposition of Al-coatings on ferritic steels, since this technique allows the conservation of microstructure and mechanical properties of these types of materials.
Some comments are needed on the expected lifetime of such coatings, and the factors expected to influence the lifetime.
Important factors that affect the efficiency of the conventional steam power plants are the temperature and the pressure of the input steam to the turbine.
These techniques require high temperatures and/or longer times, which limits their use to substrates that can be exposed to high temperature without degradation of their mechanical properties [23].
Therefore CVD-FBR potentially is an important alternative for the deposition of Al-coatings on ferritic steels, since this technique allows the conservation of microstructure and mechanical properties of these types of materials.
Some comments are needed on the expected lifetime of such coatings, and the factors expected to influence the lifetime.
Online since: December 2011
Authors: Wen Jun Bi, Yong Zhu, Ying Jin
Introduction
Corrosion fatigue is that structural component is not only affected by cyclic stress, but also eroded by corrosion environment.
During the experiment, the existence of the corrosion medium results in the changes of the generating and spreading properties of cracks.
The mechanical model of analyzing the stress intensity factor can be build, as shown in Fig. 4, in which the internal loads ΔK can be deemed as equal to K.
Shuai: Journal of Mechanical Strength Vol. 21 (1999), p. 69 [4] Z.G.
Huang: Journal of Mechanical Strength Vol. 23 (2001), p. 243 [5] I.М.
During the experiment, the existence of the corrosion medium results in the changes of the generating and spreading properties of cracks.
The mechanical model of analyzing the stress intensity factor can be build, as shown in Fig. 4, in which the internal loads ΔK can be deemed as equal to K.
Shuai: Journal of Mechanical Strength Vol. 21 (1999), p. 69 [4] Z.G.
Huang: Journal of Mechanical Strength Vol. 23 (2001), p. 243 [5] I.М.
Online since: May 2020
Authors: Shan Tung Tu, Jia Hui Lv, Shao Wu Liu, Wei Ze Wang
For components used in specific conditions, suitable materials that have good mechanical properties and processing performance should be chosen to prevent the predictable failures.
Human factors including assembly, operation and maintenance were responsible 31% of the failures.
Because of the high specific strength and attractive mechanical properties, materials such as titanium alloy and high strength steel have been widely used in aerial fasteners.
The material composition, preparation and properties are closely combined.
What’s more, over-heat, corrosion and foreign object damage are important factors resulting failures as well.
Human factors including assembly, operation and maintenance were responsible 31% of the failures.
Because of the high specific strength and attractive mechanical properties, materials such as titanium alloy and high strength steel have been widely used in aerial fasteners.
The material composition, preparation and properties are closely combined.
What’s more, over-heat, corrosion and foreign object damage are important factors resulting failures as well.
Online since: August 2015
Authors: Florin Tudose Sandu-Ville, Lucian Constantin Hanganu, Stefan Grigoras, Georgeta Lidia Potop, Stela Carmen Hanganu, Adina Oana Armencia, Georgiana Macovei
Researches on Structural Factor Involvement in Oral Tribology
Stela Carmen Hanganu1,a, Lucian Constantin Hanganu2,b,
Georgiana Macovei1,c, Georgeta Lidia Potop 3,d, Stefan Grigoras2,e,
Florin Tudose Sandu-Ville2,f, Adina Oana Armencia1,g
1Gr.
X-ray diffraction on crystals [3] In order to establish the structural factor involvement in oral tribology, the experimental researches were focused on the two dental restorative ceramic materials mentioned above.
In general, the mechanical properties of a material are closely related to the crystal size, the interface topology, the presence of micro-cracks and pores and surface texture.
Vizureanu, Tribological comparative study on two composite materials for restorative dental applications in smoking affected teeth, Materiale Plastice (Bucharest), (47) 3, (2010) 375-378
Hanganu, Evaluation of Mechanical Properties by Stereo-and Scanning Electron Microscopy of Some Heat Curing Dental Resins, Materiale Plastice (Bucharest), (47) 2, (2010) 375-380.
X-ray diffraction on crystals [3] In order to establish the structural factor involvement in oral tribology, the experimental researches were focused on the two dental restorative ceramic materials mentioned above.
In general, the mechanical properties of a material are closely related to the crystal size, the interface topology, the presence of micro-cracks and pores and surface texture.
Vizureanu, Tribological comparative study on two composite materials for restorative dental applications in smoking affected teeth, Materiale Plastice (Bucharest), (47) 3, (2010) 375-378
Hanganu, Evaluation of Mechanical Properties by Stereo-and Scanning Electron Microscopy of Some Heat Curing Dental Resins, Materiale Plastice (Bucharest), (47) 2, (2010) 375-380.
Online since: December 2010
Authors: Jing Qiu, Rui Li Shen, Huai Guang Li, Xun Zhang
To take further research on mechanical properties and behavior of this type of structure, the proposed preliminary design of a cable-stayed suspension bridge with a main span of 1800m is analyzed.
These factors make the structure competitive for the extra long-span bridge design [4, 5].
Study the effect of structural parameters on structural static and dynamic properties As a composite structure, all the structural parameters of the cable-stayed bridge and suspension bridge may affect the static and dynamic properties of this structure.
The rational value of suspension-to-span ratio can be obtained based on all the factors taken into consideration, which include the layout of structure, mechanical properties, economic efficiency etc.
To select a suspension-to-span ratio, the following factors should be taken into account: the layout of the structure, mechanical behaviors, economic efficiency, etc.
These factors make the structure competitive for the extra long-span bridge design [4, 5].
Study the effect of structural parameters on structural static and dynamic properties As a composite structure, all the structural parameters of the cable-stayed bridge and suspension bridge may affect the static and dynamic properties of this structure.
The rational value of suspension-to-span ratio can be obtained based on all the factors taken into consideration, which include the layout of structure, mechanical properties, economic efficiency etc.
To select a suspension-to-span ratio, the following factors should be taken into account: the layout of the structure, mechanical behaviors, economic efficiency, etc.
Online since: July 2014
Authors: Yang Zhao, Tian Xi Liu, Cheng Wei, Liang Ma
Introduction
The Discrete Element Method (DEM) has become an effective means to investigate the behavior and mechanical properties of granular systems which is originally developed by Cundall and Strack in 1979 [1].
Fig. 1 The viscoelastic contact model and translation of contact force Parameter Optimization of Model We expect the model established above agree with the real lunar regolith in mechanical properties.
The simple variable method is used to analyze the impact of each parameter on the mechanical properties.
The viscoelastic contact model built for the lunar regolith is similar to the real one in mechanical properties, and the values of macro-parameters: cohesion(c) and friction angle(φ) lie in the range of real regolith. 2.
[6] Gromov, V.: Physical and Mechanical Properties of Lunar and Planetary Soils.
Fig. 1 The viscoelastic contact model and translation of contact force Parameter Optimization of Model We expect the model established above agree with the real lunar regolith in mechanical properties.
The simple variable method is used to analyze the impact of each parameter on the mechanical properties.
The viscoelastic contact model built for the lunar regolith is similar to the real one in mechanical properties, and the values of macro-parameters: cohesion(c) and friction angle(φ) lie in the range of real regolith. 2.
[6] Gromov, V.: Physical and Mechanical Properties of Lunar and Planetary Soils.
Online since: October 2006
Authors: Hong Hee Yoo, Sang Ha Shin
In a mechanical system that has periodically repeated subcomponents, premature failures or
malfunctions often occur.
The rate of decay, known as localization factor by Hodges and Woodhouse [4], is employed to investigate localization phenomena (see Refs. [5, 6]).
The probability variations versus the statistical properties of the parameters are calculated through Monte Carlo simulation.
In the following, effects of some statistical parameter properties along with the number of subcomponents on the probability of frequency response localization will be discussed.
Conclusion The effects of statistical properties of the natural frequency, the coupling stiffness and the damping ratio of a periodic system on the strength of frequency response localization are investigated.
The rate of decay, known as localization factor by Hodges and Woodhouse [4], is employed to investigate localization phenomena (see Refs. [5, 6]).
The probability variations versus the statistical properties of the parameters are calculated through Monte Carlo simulation.
In the following, effects of some statistical parameter properties along with the number of subcomponents on the probability of frequency response localization will be discussed.
Conclusion The effects of statistical properties of the natural frequency, the coupling stiffness and the damping ratio of a periodic system on the strength of frequency response localization are investigated.
Online since: April 2014
Authors: Peter Groche, Jörg Avemann, Stefan Calmano, Sebastian Schmitt
Control of product properties as an application of the 3D Servo Press
An approach to increase process flexibility is to adapt processes and process factors to fluctuating properties of semi-finished parts.
Two approaches were developed to control product properties.
This includes measuring properties of the input material (Figure 11, dashed line left) and deriving influence factors on the process based on experience and process comprehension.
The open-loop processor used for this purpose consists of a knowledge-based mathematical model which anticipates the relation between measured input properties and process factors and subsequently determines the influence value for the forming process to compensate the fluctuation in the input property.
Based on this classification a summary of uncertainties affecting production processes is possible.
Two approaches were developed to control product properties.
This includes measuring properties of the input material (Figure 11, dashed line left) and deriving influence factors on the process based on experience and process comprehension.
The open-loop processor used for this purpose consists of a knowledge-based mathematical model which anticipates the relation between measured input properties and process factors and subsequently determines the influence value for the forming process to compensate the fluctuation in the input property.
Based on this classification a summary of uncertainties affecting production processes is possible.