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Online since: August 2013
Authors: Yao Ting Zhu, Hua Yin, Cheng Long Yin
In order to study the mechanical properties of tack coat for asphalt pavement, the interlaminar shear test is introduced.
Material properties and construction practices are important factors for interface bonding condition.
In practical terms, very few procedures or tests have been considered the normal stress affecting the interface shear strength.
This study is focused on the laboratory measurement of shear interface properties between asphalt layers by interlaminar shear tests.
The properties of these two emulsified asphalt are listed in Table 1.
Material properties and construction practices are important factors for interface bonding condition.
In practical terms, very few procedures or tests have been considered the normal stress affecting the interface shear strength.
This study is focused on the laboratory measurement of shear interface properties between asphalt layers by interlaminar shear tests.
The properties of these two emulsified asphalt are listed in Table 1.
Online since: February 2012
Authors: Wei Min Liu, Yong Hui Zhou, Jun Zhao, Xing Ai
The relative density and mechanical properties (flexural strength, fracture toughness and Vicker’s hardness) of the composites were tested.
With the increase of sintering temperature, the relative density and mechanical properties of the composites increased first and then decreased.
Fig.3 Relationship between relative density of the specimens and sintering temperatures Mechanical properties of the composites.
Based on Ryskewitch’s empirical formula, the porosity is a major factor which affects the strength of the composites[11].
To sum up, the mechanical properties (flexural strength, fracture toughness and Vicker’s hardness) of the composite is mostly proportional to its relative density, so the densification of the composite is in favor of the improvement of its mechanical properties [12, 13].
With the increase of sintering temperature, the relative density and mechanical properties of the composites increased first and then decreased.
Fig.3 Relationship between relative density of the specimens and sintering temperatures Mechanical properties of the composites.
Based on Ryskewitch’s empirical formula, the porosity is a major factor which affects the strength of the composites[11].
To sum up, the mechanical properties (flexural strength, fracture toughness and Vicker’s hardness) of the composite is mostly proportional to its relative density, so the densification of the composite is in favor of the improvement of its mechanical properties [12, 13].
Online since: July 2022
Authors: Claudio Giardini, Mattia Carminati, Mariangela Quarto, Carmela Borriello, Gianluca Danilo D'Urso
In the FDM process, extruded materials are generally thermoplastic filaments with poor mechanical properties.
To date, in literature, only few studies are focused on mechanical properties of metal parts fabricated via FDM.
Differently, Gong et al. [8] analyzed the mechanical properties of samples fabricated using two different AM techniques.
The impact of the main FDM process parameters on the physical, mechanical and dimensional properties of the produced parts was analyzed and the samples characteristics were compared with monolithic AISI 316L properties.
Tensile properties of 316L FDM samples.
To date, in literature, only few studies are focused on mechanical properties of metal parts fabricated via FDM.
Differently, Gong et al. [8] analyzed the mechanical properties of samples fabricated using two different AM techniques.
The impact of the main FDM process parameters on the physical, mechanical and dimensional properties of the produced parts was analyzed and the samples characteristics were compared with monolithic AISI 316L properties.
Tensile properties of 316L FDM samples.
Online since: January 2012
Authors: Michiaki Yamasaki, Yoshihito Kawamura, Akihito Kinoshita, Koji Hagihara, Yoshihiro Fukusumi
Microstructural factors that govern the plastic deformation of the long-period stacking ordered (LPSO) phase were clarified.
To clarify the strengthening mechanism of the Mg/LPSO two-phase alloy, we examined the mechanical properties and plastic deformation behavior of the LPSO-phase using the single-phase alloys [9], and found that the (0001) basal slip is the predominant deformation mode.
In this study, we attempt to clarify the microstructural factors that govern the plastic deformation behavior accompanied by the operation of basal slip and by the formation of deformation kink.
The mechanical properties of the alloys were examined by compression tests.
This may be one of the factors that induce a decrease in the k-value in the Hall-Petch relationship and cause a large decrease in yield stress.
To clarify the strengthening mechanism of the Mg/LPSO two-phase alloy, we examined the mechanical properties and plastic deformation behavior of the LPSO-phase using the single-phase alloys [9], and found that the (0001) basal slip is the predominant deformation mode.
In this study, we attempt to clarify the microstructural factors that govern the plastic deformation behavior accompanied by the operation of basal slip and by the formation of deformation kink.
The mechanical properties of the alloys were examined by compression tests.
This may be one of the factors that induce a decrease in the k-value in the Hall-Petch relationship and cause a large decrease in yield stress.
Online since: December 2013
Authors: Y. Nakamura
Application of Vickers Indentation Cracking to the Evaluation of Mechanical Properties of Very Thin Metallic Films
Y.
Nakamura1, a 1Department of Mechanical Engineering, Graduate School of Science and Engineering Kagoshima University, Kagoshima, Japan anakamura@mech.kagoshima-u.ac.jp Keywords: Mechanical properties; Thin metallic film; Vickers indentation cracks; Crack opening displacement Abstract.
In order to guarantee the structural integrity of such thin film coatings, it is necessary to evaluate the mechanical properties of the film coatings.
In most cases, the mechanical properties of thin films are estimated by means of nanoindentation techniques.
Values of parameters used in the evaluation of tensile properties.
Nakamura1, a 1Department of Mechanical Engineering, Graduate School of Science and Engineering Kagoshima University, Kagoshima, Japan anakamura@mech.kagoshima-u.ac.jp Keywords: Mechanical properties; Thin metallic film; Vickers indentation cracks; Crack opening displacement Abstract.
In order to guarantee the structural integrity of such thin film coatings, it is necessary to evaluate the mechanical properties of the film coatings.
In most cases, the mechanical properties of thin films are estimated by means of nanoindentation techniques.
Values of parameters used in the evaluation of tensile properties.
Online since: May 2014
Authors: Jenő Dúl, Zsolt Leskó
Introduction
Properties of castings are affected by the geometry, the alloy and the applied setting parametersThe geometry, the alloy and the applied setting parameters affect properties of castings together.
The automotive casting users have higher and higher expectations to improve mechanical properties of castings.
Quality of high pressure die castings is influenced by many coherent factors.
Mechanical properties.
Based on our investigations the following results were found: - Wall thickness of castings havethickness of castings has significant affect on the mechanical properties.
The automotive casting users have higher and higher expectations to improve mechanical properties of castings.
Quality of high pressure die castings is influenced by many coherent factors.
Mechanical properties.
Based on our investigations the following results were found: - Wall thickness of castings havethickness of castings has significant affect on the mechanical properties.
Online since: October 2012
Authors: Tao Hai Yan
Introduction
Hemp fiber has good mechanical properties and low density, biodegradable, has been used in many composite materials[1].
The way to judge of wettabillity properties is to test materilas’ peeling properties.
Studying the thickness of composite material and peeling properties of composite materials, and analysing the factors affecting the studied composite wetting properties through mathematical analysis method of hot pressing process of composite materials,it is important way for research.
LBF12-4A CNC fancy twister, a certain twist of the PP filament wrapped around flax yarn surface, it can produce flax / PP lapping yarn. the degree of polymerization and crystallization of cellulose are the important factors that determine the mechanical properties of cellulose fiber[7].
The mechanical properties of jute fiber reinforced polypropylene composite.
The way to judge of wettabillity properties is to test materilas’ peeling properties.
Studying the thickness of composite material and peeling properties of composite materials, and analysing the factors affecting the studied composite wetting properties through mathematical analysis method of hot pressing process of composite materials,it is important way for research.
LBF12-4A CNC fancy twister, a certain twist of the PP filament wrapped around flax yarn surface, it can produce flax / PP lapping yarn. the degree of polymerization and crystallization of cellulose are the important factors that determine the mechanical properties of cellulose fiber[7].
The mechanical properties of jute fiber reinforced polypropylene composite.
Online since: May 2014
Authors: Juan Zhang, Jiang Yu, Pei Liu, Liang Yan Jiang
A proper resin matrix is a kind of organic polymer which has lower infrared absorptivity and good physical and mechanical properties.
According to their cost performance and optical property as well as other factors, the metal Al with high performance and low cost is usually used.
Emissivity is one of the thermophysical properties of an object.
In addition, the coating thickness also affects the infrared radiation property.
It should be noted that such factors as types, content, and shape of pigment may make the influence of the thickness not significant.
According to their cost performance and optical property as well as other factors, the metal Al with high performance and low cost is usually used.
Emissivity is one of the thermophysical properties of an object.
In addition, the coating thickness also affects the infrared radiation property.
It should be noted that such factors as types, content, and shape of pigment may make the influence of the thickness not significant.
Online since: December 2006
Authors: Sang Ho Han, Jong Hoon Lee, Young Mok Rhyim, Young-Sang Na
The
microstructure of specimens was observed using TEM and the mechanical properties and wear
resistance were examined.
To establish the optimum condition for each case depending on material, shape and required properties, etc., it is essential to manifest the precipitation mechanism and effect of each factors.
In this research, the effect of deep cryogenic treatment and tempering temperature on carbide evolution was investigated as a basic research on mechanical properties enhancement mechanism of the cryogenic treatment because the precipitation of carbide is affected by subsequent tempering temperature.
The hardness and the impact test were carried out to investigate the relationship between the microstructure and mechanical properties.
The mechanical properties of the sub-zero treated specimen and the cryogenic treated specimens are compared in the table 2.
To establish the optimum condition for each case depending on material, shape and required properties, etc., it is essential to manifest the precipitation mechanism and effect of each factors.
In this research, the effect of deep cryogenic treatment and tempering temperature on carbide evolution was investigated as a basic research on mechanical properties enhancement mechanism of the cryogenic treatment because the precipitation of carbide is affected by subsequent tempering temperature.
The hardness and the impact test were carried out to investigate the relationship between the microstructure and mechanical properties.
The mechanical properties of the sub-zero treated specimen and the cryogenic treated specimens are compared in the table 2.
Online since: May 2011
Authors: Qi Yong Zeng, Xiao Feng Zheng, Kai Wu, Ming Zhu
Residual stress has a significant impact on mechanical properties of materials.
On the other hand, it will reduce fatigue strength, stress corrosion and other mechanical properties after completing the manufacturing process.
Surface-hardening has a certain impact on the life and mechanical properties of workpieces.
Steel Workpiece surface quality Influencing Factors Monitoring Through the above analysis, the main factors that affect workpiece surface roughness are cutting temperature, cutting force and mechanical vibration.
Three main factors that affect workpiece surface roughness are cutting temperature, cutting force and mechanical vibration
On the other hand, it will reduce fatigue strength, stress corrosion and other mechanical properties after completing the manufacturing process.
Surface-hardening has a certain impact on the life and mechanical properties of workpieces.
Steel Workpiece surface quality Influencing Factors Monitoring Through the above analysis, the main factors that affect workpiece surface roughness are cutting temperature, cutting force and mechanical vibration.
Three main factors that affect workpiece surface roughness are cutting temperature, cutting force and mechanical vibration