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Online since: April 2015
Authors: D.K. Xu, En-Hou Han
For casting alloys, defects such as casting porosity and cavities are usually present and the fatigue properties are affected significantly by their shape and dimension [1-2].
In contrast, wrought alloys are basically defect-free and have superior mechanical properties, thus the evaluation of their fatigue properties is of great interest for understanding the intrinsic fatigue mechanism of Mg alloys [3].
Previous work demonstrated that Y content can remarkably influence the microstructure and tensile properties of Mg-Zn-Y-Zr system alloys [9-12].
Mutoh, Effects of Mn content and texture on fatigue properties of as-cast and extruded AZ61 magnesium alloys, Int.
Han, Effect of microstructure and texture on the mechanical properties of the as-extruded Mg-Zn-Y-Zr alloys, Mater.
In contrast, wrought alloys are basically defect-free and have superior mechanical properties, thus the evaluation of their fatigue properties is of great interest for understanding the intrinsic fatigue mechanism of Mg alloys [3].
Previous work demonstrated that Y content can remarkably influence the microstructure and tensile properties of Mg-Zn-Y-Zr system alloys [9-12].
Mutoh, Effects of Mn content and texture on fatigue properties of as-cast and extruded AZ61 magnesium alloys, Int.
Han, Effect of microstructure and texture on the mechanical properties of the as-extruded Mg-Zn-Y-Zr alloys, Mater.
Online since: August 2013
Authors: Mohd Rozi Mohd Perang, Zulkarnain Abdul Latiff, N. Abdullah, Azhar Abdul Aziz
A number of experimental investigations have been reported with a wide variety of metal additives to improve the fuel properties and the engine performance, as well as to reduce emissions.
The effect of methanol-containing additive (MCA) on the emission of carbonyl compounds generated from the diesel engine was studied by Chao et al. [6] and it was observed that the emission factors for some of the carbonyl compounds with the use of MCA are higher than the values for those without the use of MCA.
Alicilar, Improvement of Diesel Fuel Properties By Using Additives, Energy Conversion And Management.
Ortega, Effect Of Ethers And Ether/Ethanol Additives On The Physicochemical Properties Of Diesel Fuel And On Engine Tests Fuel.
Pramanik, Properties and Use of Jatropha Curcas Oil and Diesel Fuel Blends In Compression Ignition Engine.
The effect of methanol-containing additive (MCA) on the emission of carbonyl compounds generated from the diesel engine was studied by Chao et al. [6] and it was observed that the emission factors for some of the carbonyl compounds with the use of MCA are higher than the values for those without the use of MCA.
Alicilar, Improvement of Diesel Fuel Properties By Using Additives, Energy Conversion And Management.
Ortega, Effect Of Ethers And Ether/Ethanol Additives On The Physicochemical Properties Of Diesel Fuel And On Engine Tests Fuel.
Pramanik, Properties and Use of Jatropha Curcas Oil and Diesel Fuel Blends In Compression Ignition Engine.
Online since: December 2022
Authors: Nawal Mohammed Dawood, Qabas Khalid Naji, Jassim Mohammed Salman
The shape and fractional volume of the phases present in the alloy are largely determined by factors collected during the production process [2].
Because of the properties of HA, it can be used to cover porous metallic implants.
Shen et al., “Altering the wetting properties of orthopaedic titanium alloy (Ti–6Al–7Nb) using laser shock peening” J.
Bartmański, “The Morphology, Structure, Mechanical Properties and Biocompatibility of Nanotubular Titania Coatings before and after Autoclaving Process” J.
Dorozhkin, “Calcium orthophosphate deposits: Preparation, properties and biomedical applications” Mater.
Because of the properties of HA, it can be used to cover porous metallic implants.
Shen et al., “Altering the wetting properties of orthopaedic titanium alloy (Ti–6Al–7Nb) using laser shock peening” J.
Bartmański, “The Morphology, Structure, Mechanical Properties and Biocompatibility of Nanotubular Titania Coatings before and after Autoclaving Process” J.
Dorozhkin, “Calcium orthophosphate deposits: Preparation, properties and biomedical applications” Mater.
Online since: September 2013
Authors: Jirod Chaisan, Chantana Punlek, Somchai Maneewan
Introduction
The study and development about the residence is very necessary because it is the Basic factor of human.
They affect for the heat transmission into the house so there is legislation for control the total heat transfer of the office building, academy.
Another method in the reducing temperature of the house and building is selection of the good material with thermal protection properties such as Radiant barrier.
Moreover, under the air gap has the Phase change material, it affects to the heat absorbed for energy storage before transition.
After the heat transition, it was stored by properties of the Phase change material used [4-5].
They affect for the heat transmission into the house so there is legislation for control the total heat transfer of the office building, academy.
Another method in the reducing temperature of the house and building is selection of the good material with thermal protection properties such as Radiant barrier.
Moreover, under the air gap has the Phase change material, it affects to the heat absorbed for energy storage before transition.
After the heat transition, it was stored by properties of the Phase change material used [4-5].
Online since: August 2016
Authors: Dinesh K. Kanchan, Prajakta Joge, Poonam Sharma, Manish Jayswal, D.K. Awasthi
In the present work, the variation in conductivity (σdc) and relaxation properties of two different blends i.e.
All these factors altogether play a key role in enhancement of conductivity of the electrolyte.
However, addition of plasticizers beyond a certain amount at times may deteriorate the mechanical properties of the polymeric systems.
Irradiation also changes/enhances various physical, chemical, mechanical, microstructural, optical and electrical properties of the host polymers of the electrolytes which in turn increases the applicability of the thus, formed polymer electrolytes in various devices.
All these factors supposedly have played a major role in leading conductivity of Blend-1 > conductivity of Blend-2 [11-13].
All these factors altogether play a key role in enhancement of conductivity of the electrolyte.
However, addition of plasticizers beyond a certain amount at times may deteriorate the mechanical properties of the polymeric systems.
Irradiation also changes/enhances various physical, chemical, mechanical, microstructural, optical and electrical properties of the host polymers of the electrolytes which in turn increases the applicability of the thus, formed polymer electrolytes in various devices.
All these factors supposedly have played a major role in leading conductivity of Blend-1 > conductivity of Blend-2 [11-13].
Online since: October 2015
Authors: Anton Panda, Jozef Jurko, Iveta Pandová, Peter Orendáč, Marek Prislupčák
Factors that affect surface erosion, directly or indirectly, can be divided into three categories [3]:
- physical and hydrodynamic principles liquids
- technical factors acting on hydroerosion process
- the parameters of action in AWJ technology.
Physical and hydrodynamic principles liquids: Identification of the basic properties of liquids will be based on physical and hydrodynamic principles.
Bicejova, Categories of factors influencing hydroerosion, in: Proc. 13th Int.
Zelenak et al., Comparison of mechanical properties of surface layers with use of nanoindentation and microindentation tests, Metalurgija 51/3 (2012) 309-312
Spišák, Assessment of properties thermal sprayed coatings realised using cermet blend powder, Metalurgija 53/4 (2014) 661-664
Physical and hydrodynamic principles liquids: Identification of the basic properties of liquids will be based on physical and hydrodynamic principles.
Bicejova, Categories of factors influencing hydroerosion, in: Proc. 13th Int.
Zelenak et al., Comparison of mechanical properties of surface layers with use of nanoindentation and microindentation tests, Metalurgija 51/3 (2012) 309-312
Spišák, Assessment of properties thermal sprayed coatings realised using cermet blend powder, Metalurgija 53/4 (2014) 661-664
Online since: May 2011
Authors: Jing Yun Chen, Sheng Wu Wang, Li Hua Zhao
The fracture morphology of asphalt mixture has a better reflection for its mechanical characteristics.
Introduction Factors of internal composition and structure, micro defects, external loading and temperature all have an influence on the material fracture, which is also related to the loading history.
The asphalt mixture is a complex structure composite material, temperature, rock, asphalt, asphalt mastic and interface performance of asphalt and aggregate all can greatly affect the crack formation and extension in the process of open fork and deflection effect under the action of temperature and loading for the asphalt mixture, then influence its whole fracture properties[13-14].Asphalt mixture fracture are almost full of black bitumen membranes, which makes it difficult to do with sampling and rolling ,and the scanning electron microscope is also difficult to observe fracture morphology.
Scaling properties of cracks[J].
Exploration via electromagnetic radiation and fractographic methods of fracture properties induced by compression in glass-ceramic[J].
Introduction Factors of internal composition and structure, micro defects, external loading and temperature all have an influence on the material fracture, which is also related to the loading history.
The asphalt mixture is a complex structure composite material, temperature, rock, asphalt, asphalt mastic and interface performance of asphalt and aggregate all can greatly affect the crack formation and extension in the process of open fork and deflection effect under the action of temperature and loading for the asphalt mixture, then influence its whole fracture properties[13-14].Asphalt mixture fracture are almost full of black bitumen membranes, which makes it difficult to do with sampling and rolling ,and the scanning electron microscope is also difficult to observe fracture morphology.
Scaling properties of cracks[J].
Exploration via electromagnetic radiation and fractographic methods of fracture properties induced by compression in glass-ceramic[J].
Online since: February 2011
Authors: Lan Wei Hu, Wen Hua Meng, Bo Ding, Yuan De Yin, Sheng Zhi Li
Xue Liping et al [3] analyzed the closure of roll pass in Accu-Roll mills, and pointed out that it is affected by the guide disc location.
Description of the model The size of pierced shell is 155×9 mm, and the material of pierced shell is C22, which is read from MSC.Superform database including the mechanical and thermal property of the material.
The frictional factor at the interface between the piercing roll and workpiece is given as m1 =0.7; at the interface between the guide disc and workpiece the frictional factor m2 =0.5; and that at the interface between the plug and workpiece is given as m3 =0.2.
Considering above factors, the film coefficient to environment takes 0.18 kW/(K × m2), and the contact heat transfer coefficient takes 25 kW/(K × m2) [4].
The force parameters are affected by lots of factors such as steel grade, tube size, temperature and rate of deformation, elongation coefficient, mill setting (tools and the adjusting parameters), etc, and each parameter’s effect is complicated.
Description of the model The size of pierced shell is 155×9 mm, and the material of pierced shell is C22, which is read from MSC.Superform database including the mechanical and thermal property of the material.
The frictional factor at the interface between the piercing roll and workpiece is given as m1 =0.7; at the interface between the guide disc and workpiece the frictional factor m2 =0.5; and that at the interface between the plug and workpiece is given as m3 =0.2.
Considering above factors, the film coefficient to environment takes 0.18 kW/(K × m2), and the contact heat transfer coefficient takes 25 kW/(K × m2) [4].
The force parameters are affected by lots of factors such as steel grade, tube size, temperature and rate of deformation, elongation coefficient, mill setting (tools and the adjusting parameters), etc, and each parameter’s effect is complicated.
Online since: August 2021
Authors: Viboon Saetang, Chaiya Dumkum, Pakin Jaritngam
Average laser power, pulse repetition rate and scan speed are found to be the significant factors affecting the roughness of laser-polished surface.
Besides the laser polishing parameters, the assist gas applied during the process also affects the quality of laser-polished surface.
Since the combination of these two factors makes the laser pulse overlap, a relationship between the overlap and surface roughness is thereby revealed in this paper.
The change in these parameters’ value significantly affected the Sa.
Lin, Surface quality, microstructure, mechanical properties and tribological results of the SKD 61 tool steel with prior heat treatment affected by the deposited energy of continuous wave laser micro-polishing, Journal of Materials Processing Technology 234 (2016) 177-194
Besides the laser polishing parameters, the assist gas applied during the process also affects the quality of laser-polished surface.
Since the combination of these two factors makes the laser pulse overlap, a relationship between the overlap and surface roughness is thereby revealed in this paper.
The change in these parameters’ value significantly affected the Sa.
Lin, Surface quality, microstructure, mechanical properties and tribological results of the SKD 61 tool steel with prior heat treatment affected by the deposited energy of continuous wave laser micro-polishing, Journal of Materials Processing Technology 234 (2016) 177-194
Online since: August 2024
Authors: Van Duong Le
Table 1 presents the material properties of PZT-4, Tungsten and Steel [26].
,Ne; j = Np + m with the properties of elastic materials.
For the media Ωj = Ωem with pure elastic properties, only stress fields would be considered.
The modeled material properties are listed in Table 1.
For PEHs, the most important factor affecting the efficiency with which mechanical energy is converted to electrical energy is its resonant frequency.
,Ne; j = Np + m with the properties of elastic materials.
For the media Ωj = Ωem with pure elastic properties, only stress fields would be considered.
The modeled material properties are listed in Table 1.
For PEHs, the most important factor affecting the efficiency with which mechanical energy is converted to electrical energy is its resonant frequency.