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Online since: December 2011
Authors: Jun Zhang, Rui Qi Niu, Chun Wei Wang, Xi Gang Du, Zhen Yu Yang
Gemini surfactant is a new generation of surfactant, showing many excellent properties such as the lower critical micelle concentration (CMC), high efficiency of reducing the surface tension and unique rheological properties[7-9].
Many good properties make Gemini surfactant has a broad prospect of application.
The Gemini surfactants show unique and meaningful properties.
The influences of the alkyl chain length, concentration, temperature and surface tension of alkylbenzene sulfonate Gemini surfactants on foam stability and foamability were studied in this paper, and various factors affecting foam stability and foamability were discussed.
There are many factors Influenced on foam stability, but the most important factor is liquid film thickness and the strength of the surface film [3].
Many good properties make Gemini surfactant has a broad prospect of application.
The Gemini surfactants show unique and meaningful properties.
The influences of the alkyl chain length, concentration, temperature and surface tension of alkylbenzene sulfonate Gemini surfactants on foam stability and foamability were studied in this paper, and various factors affecting foam stability and foamability were discussed.
There are many factors Influenced on foam stability, but the most important factor is liquid film thickness and the strength of the surface film [3].
Online since: August 2012
Authors: Zhen Hai Wei, Meng Shu Wang, Ding Li Zhang
We still only have a vague idea of the properties of rock and soil body with different structure and morphology.
To further understand the effect of structure and morphology of rock and soil body on its properties, we established a unit cell orthogonal model.
Few methods are now available to analyze the properties of rock and soil body with different structure and morphology so far.
Next, we will examine the properties and performance of such structure, in order to understand the impact of pores on material performance.
Influence of pore distribution and properties on structural performance As shown by the above analysis, the influence of pores on structural performance was mainly manifested as the changes of reduction factor along two directions.
To further understand the effect of structure and morphology of rock and soil body on its properties, we established a unit cell orthogonal model.
Few methods are now available to analyze the properties of rock and soil body with different structure and morphology so far.
Next, we will examine the properties and performance of such structure, in order to understand the impact of pores on material performance.
Influence of pore distribution and properties on structural performance As shown by the above analysis, the influence of pores on structural performance was mainly manifested as the changes of reduction factor along two directions.
Online since: February 2013
Authors: Libor M. Hlaváč, Radim Uhlář, Lucie Gembalova, Ondřej Zuchnický, Petr Jonšta
The mechanical properties of both items depend on temperature.
Mechanical properties of the selected steels are summarized in Table 1.
Table 1 Steel mechanical properties: Rm – tensile strength, Rp – yield strength, A50 – elongation, HRB – Brinell hardness Material (Wr.Nr.)
The mechanical properties of the machined materials together with the process parameters of the AWJ determine the qualitative parameters of the surface.
Stiasny, Effect of deep cryogenic treatment on the mechanical properties of tool steels, J.
Mechanical properties of the selected steels are summarized in Table 1.
Table 1 Steel mechanical properties: Rm – tensile strength, Rp – yield strength, A50 – elongation, HRB – Brinell hardness Material (Wr.Nr.)
The mechanical properties of the machined materials together with the process parameters of the AWJ determine the qualitative parameters of the surface.
Stiasny, Effect of deep cryogenic treatment on the mechanical properties of tool steels, J.
Online since: August 2011
Authors: F. Schneider, C. Vogt, S. Sinzinger, H. Adelsberger, R. Maurer, R. Mandler, L. Kuepper, R. Rascher, P. Sperber
The tool’s elastic properties enable dwell time assisted grinding.
Important factors for the choice of the optimum machining processes are raw material and geometry as well as production batch size.
The tool’s elastic properties affect the grinding process significantly.
Spot on flat face The tool’s geometry is not perfectly ball-shaped due to thermal loads during the manufacturing process and several other factors.
Removal tests showed good self-sharpening properties as long as a significant grit protrusion is provided.
Important factors for the choice of the optimum machining processes are raw material and geometry as well as production batch size.
The tool’s elastic properties affect the grinding process significantly.
Spot on flat face The tool’s geometry is not perfectly ball-shaped due to thermal loads during the manufacturing process and several other factors.
Removal tests showed good self-sharpening properties as long as a significant grit protrusion is provided.
Online since: March 2020
Authors: K.S. Vijay Sekar, G. Prabhakaran, R. Sugin Elankavi, K. Gobivel
Sugin Elankavi4,d
1,3,4Department of Mechanical Engineering, KCG College of Technology, Chennai, India
2Department of Mechanical Engineering, SSN College of Engineering, Chennai, India
agobivel@gmail.com*, bvijaysekarks@ssn.edu.in, cg_prabha2006@yahoo.com, dsuginelankavir@gmail.com
Keywords: Inconel 718, Machining forces, Surface roughness, Chip morphology and Tool wear
Abstract.
Inconel 718 is a nickel-based super alloy well suited for high-temperature applications encountered in space shuttles, aircraft black box and turbocharger due to their inherent properties.
Taking into account of extreme working conditions, efficiency in the process of machining without affecting the nature of the surface integrity with utmost care assumes a lot of importance.
Tanak et al., [2] conducted high-speed machining of Inconel 718 with PCBN cutting tool and discussed wear factors like crater wear, adhesion and thermal load due to high cutting temperature while machining.
So, the most significant parameter that affects the surface roughness was feed rate.
Inconel 718 is a nickel-based super alloy well suited for high-temperature applications encountered in space shuttles, aircraft black box and turbocharger due to their inherent properties.
Taking into account of extreme working conditions, efficiency in the process of machining without affecting the nature of the surface integrity with utmost care assumes a lot of importance.
Tanak et al., [2] conducted high-speed machining of Inconel 718 with PCBN cutting tool and discussed wear factors like crater wear, adhesion and thermal load due to high cutting temperature while machining.
So, the most significant parameter that affects the surface roughness was feed rate.
Online since: August 2022
Authors: Iskandar Hasanuddin, Husaini Husaini, Sadrawi Muammar, Akbar Rizqullah
Other factors affecting fatigue include high vibration due to crankshaft imbalance or lack of a counterweight, lubrication between the bearing and main journal, high pressure caused by cylinder combustion, and the appearance of cracks during the manufacturing process especially between the crankpin-web fillet areas [13].
Afterward, the mechanical properties were also ascertained.
Mechanical properties of steel AISI 3150 [17].
However, this material is assumed to be made of AISI 3150, and its mechanical properties are shown in Table 2.
The pearlite phase has strong and hard properties compared to the ferrite, which is less ductile [21].
Afterward, the mechanical properties were also ascertained.
Mechanical properties of steel AISI 3150 [17].
However, this material is assumed to be made of AISI 3150, and its mechanical properties are shown in Table 2.
The pearlite phase has strong and hard properties compared to the ferrite, which is less ductile [21].
Online since: October 2010
Authors: Carmen Galassi, Davide Gardini
Therefore, rheology control is needed to obtain materials with enhanced properties and to reduce energy consumption.
Protocols consider besides a precise description of the tests, all other factors that can affect the results, such as the thermo-mechanical history of the samples before testing.
The rheological properties of such complex colloidal systems affect the yield of the processes in which they are used.
Viscosity, as well as many other physical properties, is affected by the temperature.
Aging of suspensions affects their rheological properties, due to a range of chemical processes like particles dissolution, formation and precipitation of insoluble salts and degradation of organic additives.
Protocols consider besides a precise description of the tests, all other factors that can affect the results, such as the thermo-mechanical history of the samples before testing.
The rheological properties of such complex colloidal systems affect the yield of the processes in which they are used.
Viscosity, as well as many other physical properties, is affected by the temperature.
Aging of suspensions affects their rheological properties, due to a range of chemical processes like particles dissolution, formation and precipitation of insoluble salts and degradation of organic additives.
Online since: March 2017
Authors: Adnan I.O. Zaid, Safwan M. Al-Qawabah, Nabeel Alshabatat
Determination of the Mechanical Behavior.
Mondolfo: Aluminum Alloys, Structure and Properties, Butterworth and Co., London, (1976)
Person: Factors affecting the grain refinement of aluminum using titanium and boron additives , Metallurgical Translations B, (1976), p. 223-23 [7] A.I.O.
Zaid: Effect of some grain refiners on the mechanical properties of aluminum (Proc. 7th International symposium on advanced materials, 2001), p. 63-67
Chakkingal: Flow properties of commercial purity aluminum processed by equal channel angular pressing Material Science and Engineering A Vol. 487(2007)
Mondolfo: Aluminum Alloys, Structure and Properties, Butterworth and Co., London, (1976)
Person: Factors affecting the grain refinement of aluminum using titanium and boron additives , Metallurgical Translations B, (1976), p. 223-23 [7] A.I.O.
Zaid: Effect of some grain refiners on the mechanical properties of aluminum (Proc. 7th International symposium on advanced materials, 2001), p. 63-67
Chakkingal: Flow properties of commercial purity aluminum processed by equal channel angular pressing Material Science and Engineering A Vol. 487(2007)
Online since: December 2014
Authors: N. Sukjai, W. Tipawan, S. Piyasin, K. Sena
This had been encouraged by desirable esthetics and translucency, higher mechanical and better biological properties of ceramics.
Dimension of connectors and length of the pontics also have been another critical area affecting the success rates.
The model has been divided into many regions as shown in Fig. 3 and their mechanical properties which based on the previous work is shown in Table 1.
However, this study has some common limitations due to the 2D modeling of FPD structure and its mechanical properties.
Mechanical properties.
Dimension of connectors and length of the pontics also have been another critical area affecting the success rates.
The model has been divided into many regions as shown in Fig. 3 and their mechanical properties which based on the previous work is shown in Table 1.
However, this study has some common limitations due to the 2D modeling of FPD structure and its mechanical properties.
Mechanical properties.
Online since: May 2011
Authors: Xiao Qin Zhang, Wei Yue, Yu Ping You, Shun Luo
The article introduced the corrosion prevention mechanism of silane treatment; factors affecting performance of the silane film(including silane categories, the concentration and pH of the silane solution, and deposition methods); modified technologies(such as loading nanoparticles, doping corrosion inhibitor and adding suitable dyes and colorants); analytical and characterization techniques of the silanizing film.
Others The properties of the silane film are also influenced by the pretreatment of metal surface, curing and choice of solvent ,the nature of the silane ,the time and temperature of drying, solution parameter such as pH and concentration, aging time, et al [17-21] . pH is a critical influence factor to the hydrolyzation and condensation of the silane.
The resachers[1] also systematicly studied bis-sulfur silane films on AA 2024-T3 substrates by loading silica nanoparticles, the results shows when the silica amount loaded into the silane solution is between 5 and 15 ppm, the corrosion performance and mechanical properties of the film is optimum.
Palanivel V[23] studied the conditions of the dye which could incorporate to the silane film without affecting its corrosion and adhesion properties.
Effects of electrodeposition potential on the corrosion properties of bis - 1 ,2 - [ triethoxysilyl ]ethane films on alumi num alloy[J ] .
Others The properties of the silane film are also influenced by the pretreatment of metal surface, curing and choice of solvent ,the nature of the silane ,the time and temperature of drying, solution parameter such as pH and concentration, aging time, et al [17-21] . pH is a critical influence factor to the hydrolyzation and condensation of the silane.
The resachers[1] also systematicly studied bis-sulfur silane films on AA 2024-T3 substrates by loading silica nanoparticles, the results shows when the silica amount loaded into the silane solution is between 5 and 15 ppm, the corrosion performance and mechanical properties of the film is optimum.
Palanivel V[23] studied the conditions of the dye which could incorporate to the silane film without affecting its corrosion and adhesion properties.
Effects of electrodeposition potential on the corrosion properties of bis - 1 ,2 - [ triethoxysilyl ]ethane films on alumi num alloy[J ] .