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Online since: January 2011
Authors: Yoshinobu Shimamura, Tomoya Ohguma, Yoshifumi Ojima, Keiichiro Tohgo
Their chemical compositions and mechanical properties are shown in Table 1.
Table 1 Chemical compositions (mass%) and mechanical properties.
Fig. 5 Fatigue crack growth properties of base steels.
Stress Intensity Factors along a Nugget Edge Front The stress intensity factors along a nugget edge front were obtained by the results of elastic analysis.
Fig. 9 Distributions of stress intensity factors along a nugget edge front.
Table 1 Chemical compositions (mass%) and mechanical properties.
Fig. 5 Fatigue crack growth properties of base steels.
Stress Intensity Factors along a Nugget Edge Front The stress intensity factors along a nugget edge front were obtained by the results of elastic analysis.
Fig. 9 Distributions of stress intensity factors along a nugget edge front.
Online since: May 2012
Authors: Shun Yu Han, Bo Zhang, Yu Sen Hu, Lu Mei Pu, Wen Ying Wang
The paper embarked from the analysis the chemical and physical properties of potato starch.
An orthogonal experiment of L27 (313) was designed to identify the main factors affecting them.
The conditions of this chemical reaction are likely to affect considerably the swelling properties of the microspheres in biological media and their biodegradability.
According to range analysis, orthogonal experimental design can ascertain the significance sequence of all the studied affecting factors and the optimal level of variables.
B Wurzburg, in Modified Starches: Properties and Uses, CRC Press: Boca Raton, FI (1986)
An orthogonal experiment of L27 (313) was designed to identify the main factors affecting them.
The conditions of this chemical reaction are likely to affect considerably the swelling properties of the microspheres in biological media and their biodegradability.
According to range analysis, orthogonal experimental design can ascertain the significance sequence of all the studied affecting factors and the optimal level of variables.
B Wurzburg, in Modified Starches: Properties and Uses, CRC Press: Boca Raton, FI (1986)
Online since: December 2010
Authors: Lian Hong Zhang, Rui Zhou, Yu Hong Liu
Abstract: Residual stress in green compact is an important factor to influence the quality of the compact and corresponding powder metallurgy product.
Drilling, turning and milling, which are common operations in the green state, require a green compact of high strength, with no defects and excellent mechanical properties.
These stresses can decrease the properties of materials and cause flaw.
Two compaction types including single action and double action with different lubricant conditions have been studied which give a better understanding of the factors affecting the final stress state.
As the density increases, the mechanical properties of the compacted body are affected.
Drilling, turning and milling, which are common operations in the green state, require a green compact of high strength, with no defects and excellent mechanical properties.
These stresses can decrease the properties of materials and cause flaw.
Two compaction types including single action and double action with different lubricant conditions have been studied which give a better understanding of the factors affecting the final stress state.
As the density increases, the mechanical properties of the compacted body are affected.
Online since: November 2020
Authors: Gianni Nicoletto, Radomila Konečná
Introduction
The excellent high temperature mechanical properties of Inconel 718 make it the most widely used material for hot structural parts of jet engines.
Therefore, not surprisingly, fatigue properties of SLM metals vary considerably as well.
Static mechanical properties of heat treated SLM Inconel 718 were determined using tensile specimens tested in a servo-hydraulic test machine.
They are compared to standard properties in Table 2.
This may indicate that roughness is not the unique factor affecting the fatigue behavior.
Therefore, not surprisingly, fatigue properties of SLM metals vary considerably as well.
Static mechanical properties of heat treated SLM Inconel 718 were determined using tensile specimens tested in a servo-hydraulic test machine.
They are compared to standard properties in Table 2.
This may indicate that roughness is not the unique factor affecting the fatigue behavior.
Online since: March 2016
Authors: Marta Anna Hajduga, Maciej Hajduga, Sylwia Węgrzynkiewicz, Joanna Waś-Solipiwo, Maciej Błażej Hajduga
Due to this fact they are carried out by a vast area, subject to various factors: the climatic, environmental and topographical features.
In industrial practice on various production stages of the fittings for overhead power line, there are many factors that cause the zinc coating thickness diversification, that in the next step determine its corrosion resistance and the period of their exploitation.
Thermal beam influence caused by a significant way the properties of the outer layer that depend on the creation of so-called Heat Affected Zone (HAZ).
The changes in the structure of treated material have an impact on the composition and properties of coating applied by hot dip galvanizing [4-7].
Surfaces having stratified functional properties.
In industrial practice on various production stages of the fittings for overhead power line, there are many factors that cause the zinc coating thickness diversification, that in the next step determine its corrosion resistance and the period of their exploitation.
Thermal beam influence caused by a significant way the properties of the outer layer that depend on the creation of so-called Heat Affected Zone (HAZ).
The changes in the structure of treated material have an impact on the composition and properties of coating applied by hot dip galvanizing [4-7].
Surfaces having stratified functional properties.
Online since: November 2011
Authors: Yun Liang Li, Yi Qiu Tan
For the performance of Waterproof adhesive layer material, the shear test and pull-out test are mainly used to evaluate the adhesive properties of different materials [2].
The best waterproof adhesive layer material consumption can be determined by testing [3,4], the relationship of material properties, loading rate and environmental temperature have been investigated [5].
Because the rubber asphalt mixing the rubber powder, it has a good deformability, good adhesion properties, more suitable for bridge deck waterproofing adhesive layer requirements.
The mechanical properties of rubber asphalt waterproofing adhesive layer are tested by shear test and pull-out test, to determine the optimum asphalt rubber Spraying volume, and to study factors affecting its performance.
The tensile deformation-stress curve has a multi-stage characteristics and complex mechanical behavior.
The best waterproof adhesive layer material consumption can be determined by testing [3,4], the relationship of material properties, loading rate and environmental temperature have been investigated [5].
Because the rubber asphalt mixing the rubber powder, it has a good deformability, good adhesion properties, more suitable for bridge deck waterproofing adhesive layer requirements.
The mechanical properties of rubber asphalt waterproofing adhesive layer are tested by shear test and pull-out test, to determine the optimum asphalt rubber Spraying volume, and to study factors affecting its performance.
The tensile deformation-stress curve has a multi-stage characteristics and complex mechanical behavior.
Online since: June 2013
Authors: Omid Azadegan, Jie Li, S. Hadi Jafari, Gang Ren
In this research, a series of laboratory testing has been carried out to investigate mechanical properties of lime and cement treated granular materials with and without geogrid reinforcing layers.
The tests results show that the amount of lime/cement ratio (LCR) and the amount of used cement significantly affect the mechanical properties of the treated materials.
And the results show that in some cases application of geogrid reinforcement may demolish the mechanical characteristics of the treated materials because of its compaction resistance properties.
Voottipruex: Factors affecting kinked steel grid reinforcement in MSE structures, Geotextiles and Geomembranes, Vol. 29 (2011), p.172 [12] Li F.L. et al, FE simulation of viscous behavior of geogrid-reinforced sand under laboratory-scale plane-strain-compression testing, Geotextiles and Geomembranes, Vol. 31 (2012), p.72
Li: Compaction Characteristics and Mechanical Properties of Lime/Cement Treated Granular Soils, Electronic Journal of Geotechnical Engineering (EJGE), Vol. 17(P) (2012), p.2275
The tests results show that the amount of lime/cement ratio (LCR) and the amount of used cement significantly affect the mechanical properties of the treated materials.
And the results show that in some cases application of geogrid reinforcement may demolish the mechanical characteristics of the treated materials because of its compaction resistance properties.
Voottipruex: Factors affecting kinked steel grid reinforcement in MSE structures, Geotextiles and Geomembranes, Vol. 29 (2011), p.172 [12] Li F.L. et al, FE simulation of viscous behavior of geogrid-reinforced sand under laboratory-scale plane-strain-compression testing, Geotextiles and Geomembranes, Vol. 31 (2012), p.72
Li: Compaction Characteristics and Mechanical Properties of Lime/Cement Treated Granular Soils, Electronic Journal of Geotechnical Engineering (EJGE), Vol. 17(P) (2012), p.2275
Online since: May 2022
Authors: Bai Cheng Feng, Ming Lei Hu, Cheng Peng Xie, Karen Amin
The hydrogel had good mechanical properties due to the homogeneous dispersion of MMT.
The resulting copolymer-NC gels were investigated for their mechanical and swelling properties.
Swelling rate increased first and then decreased, as analyzed by the two factors together.
The stress–strain curves of DEAA-AAm-AMPS|MMT organogels with different monomer ratios For copolymer hydrogel materials, monomer composition was the main factor affecting their tensile strength and elongation at break.
MMT’s uniform dispersion improved these hydrogels’ mechanical properties (tensile strength: 0.1 Mpa; elongation at break: 1807%).
The resulting copolymer-NC gels were investigated for their mechanical and swelling properties.
Swelling rate increased first and then decreased, as analyzed by the two factors together.
The stress–strain curves of DEAA-AAm-AMPS|MMT organogels with different monomer ratios For copolymer hydrogel materials, monomer composition was the main factor affecting their tensile strength and elongation at break.
MMT’s uniform dispersion improved these hydrogels’ mechanical properties (tensile strength: 0.1 Mpa; elongation at break: 1807%).
Online since: May 2015
Authors: Janette Brezinová, Anna Guzanová, Juraj Koncz, Dagmar Draganovská
The paper presents the results of research aimed at determining the corrosive properties of steel surfaces after mechanical treatment by grinding and blasting.
The data obtained by this method are further analyzed and may provide important information on the composition of the system in terms of its electrical properties.
The difference in maximum values of polarization resistance was affected by several factors such as the shape and size of used blasting medium, kinetic energy of impact and parameters of pretreatment technology.
Change in surface activity and subsequent decrease in adhesion of applied coatings significantly affects also the corrosive environment which the surfaces are exposed to.
Stejskal, Effect of surface treatment of pigment particles with polypyrrole and polyaniline phosphate on their corrosion inhibiting properties in organic coatings, Prog.
The data obtained by this method are further analyzed and may provide important information on the composition of the system in terms of its electrical properties.
The difference in maximum values of polarization resistance was affected by several factors such as the shape and size of used blasting medium, kinetic energy of impact and parameters of pretreatment technology.
Change in surface activity and subsequent decrease in adhesion of applied coatings significantly affects also the corrosive environment which the surfaces are exposed to.
Stejskal, Effect of surface treatment of pigment particles with polypyrrole and polyaniline phosphate on their corrosion inhibiting properties in organic coatings, Prog.
Online since: December 2010
Authors: Zuo Min Liu, Rui Hu, Chun Xia Xu
Therefore, a lot of researches have been done in material properties for its applications[1-3].However, there are very few references to discuss the effects of Young’s modulus of ball bearing on its rolling resistance characteristics.The Young’s modulus is a key mechanical property of materials and varies with different materials; especially large difference exists in the Young’s modulus between the metal and non-metal material, thus the Young’s modulus of ball bearing is a big issue needs to be discussed.
Analysis of experimental Results.The balls’rolling will be affected by the material properties of contact surface when they roll along the raceway of inside ring and outside ring under the radial contact load.
The factors affected by the Young’s modulus of ball bearing on its rolling resistance characteristics are mainly focused on three aspects: the elastic power consumption, contact deformation and the stress distribution, and the characteristic values of the rolling resistant characteristics(including the three aspects above) will decrease with the increase of ball bearing’s Young’s modulus so that the rolling resistant characteristics of ZrO2 are better than that of GCr15, for example, The elastic power consumption of the ZrO2 bearing is about 80 of the GCr15 bearing.
China Mechanical Engineering.2010.
China Mechanical Engineering. 2010.
Analysis of experimental Results.The balls’rolling will be affected by the material properties of contact surface when they roll along the raceway of inside ring and outside ring under the radial contact load.
The factors affected by the Young’s modulus of ball bearing on its rolling resistance characteristics are mainly focused on three aspects: the elastic power consumption, contact deformation and the stress distribution, and the characteristic values of the rolling resistant characteristics(including the three aspects above) will decrease with the increase of ball bearing’s Young’s modulus so that the rolling resistant characteristics of ZrO2 are better than that of GCr15, for example, The elastic power consumption of the ZrO2 bearing is about 80 of the GCr15 bearing.
China Mechanical Engineering.2010.
China Mechanical Engineering. 2010.