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Online since: January 2013
Authors: Xu Wu, Zhi Meng Guo
The using conditions of the aero craft components are varied, so it will be damaged and had corrosion on components surface by many factors in ocean and atmosphere.[1,2].
Analysis The coating hardness is a mechanical property index that can indicate the wear resistance, intensity and service life in some degrees.
That can affect the coating’s performance especially of the toughness.
Factor, L.
Mechanical properties of aluminized CoCrAlY coatings in advanced gas turbine blades.
Analysis The coating hardness is a mechanical property index that can indicate the wear resistance, intensity and service life in some degrees.
That can affect the coating’s performance especially of the toughness.
Factor, L.
Mechanical properties of aluminized CoCrAlY coatings in advanced gas turbine blades.
Online since: March 2021
Authors: Eugenio Brusa, ABBAS RAZAVYKIA, Sina Ghodsieh, Lorenzo Giorio
The melt pool width and depth were selected as response factors [13].
Factors and levels were selected as in some previous studies [12, 13].
Table 1: Design summary and factors Factor Name Unit Type Low Mean High Std.
Table 2: Influential factors and their associated data No.
Sutcliffe, The influence of processing parameters on the mechanical properties of selectively laser melted stainless steel microlattice structures, J.
Factors and levels were selected as in some previous studies [12, 13].
Table 1: Design summary and factors Factor Name Unit Type Low Mean High Std.
Table 2: Influential factors and their associated data No.
Sutcliffe, The influence of processing parameters on the mechanical properties of selectively laser melted stainless steel microlattice structures, J.
Online since: March 2010
Authors: Jian Sha Lu, Guo Zhong Chai, Xiu Lin Li, Hong Tao Tang
To deal with problem of manufacturing system stability caused by uncertain factors in
discrete production process, holon was introduced to manufacturing execution system (MES).
Model design of production factors as order, resource, raw material, product and management factors as optimize, execution was described amply.
According to design procedure given by literature [7], basic holon are designed to correspond with production factors: a.
It offers physical property and the genetic attribute of material.
Physical property depends on the material itself.
Model design of production factors as order, resource, raw material, product and management factors as optimize, execution was described amply.
According to design procedure given by literature [7], basic holon are designed to correspond with production factors: a.
It offers physical property and the genetic attribute of material.
Physical property depends on the material itself.
Online since: November 2007
Authors: T.M. Sridhar, R. Praveen, S. Shanmugaraj, S.K. Srinivas, D. Das
Its properties
depend on the nature of mechanical forces in addition to the location as well as the age, sex and race
of the subject.
The results indicate that bone minerals vary with different factors, the structure and chemistry of bone mineral and related synthetic and mineral apatite's.
Previous studies have shown that trabecular bone mechanical properties are affected by its non uniform mineral distribution [5].
This non uniformity distribution will affect the apparent stiffness of cancellous bone.
The results indicate that bone minerals vary with different factors, the structure and chemistry of bone mineral and related synthetic and mineral apatite's.
Previous studies have shown that trabecular bone mechanical properties are affected by its non uniform mineral distribution [5].
This non uniformity distribution will affect the apparent stiffness of cancellous bone.
Online since: September 2014
Authors: Yulia S. Zhukova, Anton S. Konopatsky, Mikhail R. Filonov
Biomechanical compatibility is based on similarity of mechanical properties of implant material and bone tissue.
Thus the most important mechanical properties of metallic materials for bone and dental implants are low elastic modulus and superelasticity.
High concentration of oxygen leads to embrittlement of Ti-Nb alloys, so it is important to retain oxygen and other impurities at lowest level so they do not affect plasticity and functional properties of the alloys.
References [1] Hee Young Kim, Yoshinori Ohmatsu, Jae Il Kim, Hideki Hosoda and Shuichi Miyazaki, Mechanical Properties and Shape Memory Behavior of Ti-Mo-Ga Alloys, Materials Transactions , 45, 4 (2004) 1090-1095
[8] Qianqian Weia, Liqiang Wanga, Yuanfei Fub, Jining Qina, Weijie Lua, Di Zhanga, Influence of oxygen content on microstructure and mechanical properties of Ti–Nb–Ta–Zr alloy, Materials & Design, 32, (2011) 2934-2939.
Thus the most important mechanical properties of metallic materials for bone and dental implants are low elastic modulus and superelasticity.
High concentration of oxygen leads to embrittlement of Ti-Nb alloys, so it is important to retain oxygen and other impurities at lowest level so they do not affect plasticity and functional properties of the alloys.
References [1] Hee Young Kim, Yoshinori Ohmatsu, Jae Il Kim, Hideki Hosoda and Shuichi Miyazaki, Mechanical Properties and Shape Memory Behavior of Ti-Mo-Ga Alloys, Materials Transactions , 45, 4 (2004) 1090-1095
[8] Qianqian Weia, Liqiang Wanga, Yuanfei Fub, Jining Qina, Weijie Lua, Di Zhanga, Influence of oxygen content on microstructure and mechanical properties of Ti–Nb–Ta–Zr alloy, Materials & Design, 32, (2011) 2934-2939.
Online since: September 2007
Authors: M. Neil James, D.G. Hattingh, Hannalie Lombard, 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).
Online since: May 2006
Authors: M. Helena Gil, Luís M. Ferreira, António N. Falcão
New LDPE Copolymeric Films with Enhanced Hydrophilic Properties
Prepared by Gamma Irradiation
L.M.
Graft copolymerization induced by gamma radiation has being used as a tool to modify the surface properties of a range of polymeric substrates.
Several factors may affect the radiation grafting process, such as the monomer concentration, the presence or absence of air during irradiation and the irradiation dose-rate (DR).
Sample characterization Thermal analysis Thermal properties of non-irradiated and irradiated LDPE film, polyHEMA and LDPE grafted films were evaluated by TGA and DSC.
The hydration degree of a polymeric material influences the surface properties and the diffusion mechanisms through the polymeric support, as well as its mechanical properties [7, 8].
Graft copolymerization induced by gamma radiation has being used as a tool to modify the surface properties of a range of polymeric substrates.
Several factors may affect the radiation grafting process, such as the monomer concentration, the presence or absence of air during irradiation and the irradiation dose-rate (DR).
Sample characterization Thermal analysis Thermal properties of non-irradiated and irradiated LDPE film, polyHEMA and LDPE grafted films were evaluated by TGA and DSC.
The hydration degree of a polymeric material influences the surface properties and the diffusion mechanisms through the polymeric support, as well as its mechanical properties [7, 8].
Online since: February 2012
Authors: Mei Yang, De Zhi Zeng, Da Jiang Zhu, Yuan Hua Lin, Gang Tian, Fei Liu
Pits preferentially occur either in the weld metal or in the heat affected zone.
Existing research results show that factors influencing corrosion resistance of DSS are dual phase scale and the distribution of the alloy element in each phase [6-8].
Introduction of Anticorrosion Property in Weld Joint of Duplex Stainless Steel.
Corrosion Resistance Properties of Duplex Stainless Steels Welded Joints.
Effects of Heat Input on Mechanical and Corrosion Properties of Duplex Stainless Steel Tubular Welded Joint[J].
Existing research results show that factors influencing corrosion resistance of DSS are dual phase scale and the distribution of the alloy element in each phase [6-8].
Introduction of Anticorrosion Property in Weld Joint of Duplex Stainless Steel.
Corrosion Resistance Properties of Duplex Stainless Steels Welded Joints.
Effects of Heat Input on Mechanical and Corrosion Properties of Duplex Stainless Steel Tubular Welded Joint[J].
Online since: May 2011
Authors: Xiao Hong Cong, Hong Bo Liu, Li Sun, Jing Sun
In terms of its production technology, the technique formula of the raw materials for gypsum board is not only the main factors to determine the quality, but also determine the use of equipment related to production technology.
Studying the effect of water reducing agent on properties of gypsum, it can be found that compatibility of naphthalene series and gypsum is best.
There is no overlap with each other into a network, so the mechanical bite force between the materials is low.
In addition, when naphthalene superplasticizer is added into gypsum, on one hand it can play a significant role in promoting coagulation, on the other hand it can reduce the mixing water, and then it can improve significantly the mechanical properties of plaster.
When the mix ratio of the plaster, foam, coagulant agents and other raw materials maintain a certain and the mobility of plaster maintain essentially the same, adding the naphthalene superplasticizer into the production of gypsum board has no adverse effects on performance including setting time and mechanical properties.
Studying the effect of water reducing agent on properties of gypsum, it can be found that compatibility of naphthalene series and gypsum is best.
There is no overlap with each other into a network, so the mechanical bite force between the materials is low.
In addition, when naphthalene superplasticizer is added into gypsum, on one hand it can play a significant role in promoting coagulation, on the other hand it can reduce the mixing water, and then it can improve significantly the mechanical properties of plaster.
When the mix ratio of the plaster, foam, coagulant agents and other raw materials maintain a certain and the mobility of plaster maintain essentially the same, adding the naphthalene superplasticizer into the production of gypsum board has no adverse effects on performance including setting time and mechanical properties.
Online since: October 2012
Authors: Chun Yao Hsu, Chung Chen Tsao, Che Hsiung Tsai, Mao Yong Lin, Ding Yeng Chen
Introduction
Nickel superalloy has been widely applied to escape valves, furnace equipment, petroleum, nuclear energy industries and corrosion resistant environments because of its superior properties.
Good mechanical properties together with its severe work-hardening tendency lead to a high cutting force.
This work uses the orthogonal array in the Taguchi quality design to determine significant machining factors for increasing experimental efficiency.
Depth of cut (σ = 38.40 %) and feed rate (σ = 22.59 %) appear as the most significant cutting parameter affecting roundness.
The estimated S/N ratio Ypredicted using optimal level design parameters can be calculated as [15] : Ypredicted (8) where is the total mean S/N ratio, is the mean S/N ratio at the optimal level, and k is the main design parameter number affecting the quality characteristic.
Good mechanical properties together with its severe work-hardening tendency lead to a high cutting force.
This work uses the orthogonal array in the Taguchi quality design to determine significant machining factors for increasing experimental efficiency.
Depth of cut (σ = 38.40 %) and feed rate (σ = 22.59 %) appear as the most significant cutting parameter affecting roundness.
The estimated S/N ratio Ypredicted using optimal level design parameters can be calculated as [15] : Ypredicted (8) where is the total mean S/N ratio, is the mean S/N ratio at the optimal level, and k is the main design parameter number affecting the quality characteristic.