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Online since: October 2016
Authors: Toshio Ogawa, Taiki Ikegaya
It was thought that these bound- aries come from some kinds of mechanical stress because single-crystal plates are quite uniform from the viewpoints of the investigation on the chemical compositions and the physical properties analyzed by XRD etc. in the plates [6].
Table 2 shows dielectric and piezoelectric properties in PMNT70/30 single-crystal plates and ceramics.
Table 2 Dielectric and piezoelectric properties in PMNT70/30 single-crystal plates and ceramics after DC poling.
Figure 12 shows the effect of grain boundary between PMNT single-crystal plates and PMNT ceramics; elastic constants vs. various kinds of coupling factors (k) such as kp (planer coupling factor in ceramic disk), k31, k32 and kt in the single-crystal plates.
Kuwata et al., Dielectric and piezoelectric properties of 0.91Pb(Zn1/3Nb2/3)O3-0.09PbTiO3 single crystals, Jpn.
Table 2 shows dielectric and piezoelectric properties in PMNT70/30 single-crystal plates and ceramics.
Table 2 Dielectric and piezoelectric properties in PMNT70/30 single-crystal plates and ceramics after DC poling.
Figure 12 shows the effect of grain boundary between PMNT single-crystal plates and PMNT ceramics; elastic constants vs. various kinds of coupling factors (k) such as kp (planer coupling factor in ceramic disk), k31, k32 and kt in the single-crystal plates.
Kuwata et al., Dielectric and piezoelectric properties of 0.91Pb(Zn1/3Nb2/3)O3-0.09PbTiO3 single crystals, Jpn.
Online since: July 2024
Authors: Muhammad Amirul Ikmal, Ramizah Rozaimay, Tuan Zaharinie, Tadashi Ariga
The microstructure and mechanical properties of the brazed joint were investigated to identify the joint ability after the brazing process.
However, SS304 provides better corrosion resistance and mechanical properties than Cu [2].
Cu and SS304 combination provide a big challenge for researchers as they have different chemical and thermo-mechanical properties, such as melting point, thermal conductivity and thermal expansivity [6].
Compared to ordinary metal, porous metal with open-cell bodies possesses many interesting physical and mechanical properties [9].
Ashby, Cellular solids: Structure and properties, 2nd ed.
However, SS304 provides better corrosion resistance and mechanical properties than Cu [2].
Cu and SS304 combination provide a big challenge for researchers as they have different chemical and thermo-mechanical properties, such as melting point, thermal conductivity and thermal expansivity [6].
Compared to ordinary metal, porous metal with open-cell bodies possesses many interesting physical and mechanical properties [9].
Ashby, Cellular solids: Structure and properties, 2nd ed.
Online since: December 2014
Authors: Jun Wu
Due to large variations of asphalt content, aggregate type, gradation, distribution and so on, mechanical properties of asphalt mixture are very complicated.
Accordingly, it is important to construct a micromechanical constitutive model containing the component and microstructure information with micromechanical approaches in order to predict mechanical properties of asphalt mixture [1-3].
The micromechanics methods played important roles in the viscoelastic or viscoplastic properties prediction of composites [6,7] and were recently applied to asphalt mixture.
The Eshelby equivalent inclusion theory is extended to predict effective uniaxial compression creep properties of asphalt mixture using the elastic-viscoelastic correspondence principle.
[4] Shashidhar, N., and Romero, P., Factors affecting the stiffening potential of mineral fillers, Transport Res Rec, Vol. 1638, 1998, 94-100
Accordingly, it is important to construct a micromechanical constitutive model containing the component and microstructure information with micromechanical approaches in order to predict mechanical properties of asphalt mixture [1-3].
The micromechanics methods played important roles in the viscoelastic or viscoplastic properties prediction of composites [6,7] and were recently applied to asphalt mixture.
The Eshelby equivalent inclusion theory is extended to predict effective uniaxial compression creep properties of asphalt mixture using the elastic-viscoelastic correspondence principle.
[4] Shashidhar, N., and Romero, P., Factors affecting the stiffening potential of mineral fillers, Transport Res Rec, Vol. 1638, 1998, 94-100
Online since: April 2014
Authors: Petra Gavendová, Mária Hagarová, Rastislav Dzedzina
The mechanical properties were determined with use of the test according to EN ISO 6892-1:2009 standard and means of a Vickers microhardness tester.
The mechanical properties were tested during a tensile test according to EN ISO 6892-1:2009 standard.
Summary The deposited coatings were characterized in terms of their chemical composition, micro- and nanostructure and different mechanical properties: 1.
Oliver: Measurement of thin film mechanical properties using nanoindentation, MRS Bulletin (1992)
Fenineche, Effect of electrodeposition parameters on the microstructure and mechanical properties of Co-Ni alloys, Surface and Coating Technology. 1 (1990) 75-81.
The mechanical properties were tested during a tensile test according to EN ISO 6892-1:2009 standard.
Summary The deposited coatings were characterized in terms of their chemical composition, micro- and nanostructure and different mechanical properties: 1.
Oliver: Measurement of thin film mechanical properties using nanoindentation, MRS Bulletin (1992)
Fenineche, Effect of electrodeposition parameters on the microstructure and mechanical properties of Co-Ni alloys, Surface and Coating Technology. 1 (1990) 75-81.
Online since: October 2011
Authors: Jin Hong Ma, Hui Li
The recrystallization simulation of H-beam rolling process
Jinhong Ma1,2 a, Hui Li1,2
1Metallurgy and energy college of Hebei United University, Tangshan, 063009 China
2Hebei Province modern metallurgy technology key laboratory,063009,china
amajinhong@126.com
Keywords: deform; recrystallization; relative reduction
Abstract:Based on commercial FE software of DEFORM-3D,the recrystallization in the rolling process of H-Beam is simulated, the factors affect the recrystallization are analyzed.
The different reduces affect the recrystallization are also analyzed.
Introduction H-beam is widely used in the construction of national economy in virtue of its excellent section properties[1].
But at this case, increasing the reduce will cause uneven grain size at the cross-section to increase, in order to improve the mechanical properties of H-beam, on making the rolling schedules, in the condition of meeting the requirement of the stiffness and strength equipment, as much as possible increasing the reduce, however, avoiding the rolling temperature and rolling speed lead to the larger grain size.
Anshan Iron and Steel Technology. 1998,(4):21-23 (In chinese) [2] Senumz T, Suehiro M, Yada H, Mathematical models for predicting microstructural evolution and mechanical properties of hot strips[J].
The different reduces affect the recrystallization are also analyzed.
Introduction H-beam is widely used in the construction of national economy in virtue of its excellent section properties[1].
But at this case, increasing the reduce will cause uneven grain size at the cross-section to increase, in order to improve the mechanical properties of H-beam, on making the rolling schedules, in the condition of meeting the requirement of the stiffness and strength equipment, as much as possible increasing the reduce, however, avoiding the rolling temperature and rolling speed lead to the larger grain size.
Anshan Iron and Steel Technology. 1998,(4):21-23 (In chinese) [2] Senumz T, Suehiro M, Yada H, Mathematical models for predicting microstructural evolution and mechanical properties of hot strips[J].
Online since: August 2013
Authors: Xiao Ming Zhang, Shu Wen Ding, Shuang Xi Li
Soil direct shear test was conducted to analyze the relationship between shear strength indices and the influencing factors.
Those studies focus on two aspects: 1) The influence of soil physical, chemical, and mechanical properties on slope disintegration[2]; 2) Ecological restoration patterns for slope disintegration area[3-5].
However, differences and factors of shear strength of soils in slope disintegrations need to be further studied.
Soil mechanical behavior and its factors of the different slope disintegration are analyzed using direct shear tests.
Results and Analysis 1) Shear Strength Indices and Factors Water content in four soil layers of the two slope disintegrations is shown in Tab.1.
Those studies focus on two aspects: 1) The influence of soil physical, chemical, and mechanical properties on slope disintegration[2]; 2) Ecological restoration patterns for slope disintegration area[3-5].
However, differences and factors of shear strength of soils in slope disintegrations need to be further studied.
Soil mechanical behavior and its factors of the different slope disintegration are analyzed using direct shear tests.
Results and Analysis 1) Shear Strength Indices and Factors Water content in four soil layers of the two slope disintegrations is shown in Tab.1.
Online since: February 2013
Authors: Ludosław Stobierski, Gabriela Górny, Paweł Rutkowski, Marian Rączka
The computer-aided analysis of microstructure of the SiC-TiB2 composites and the analysis of the measurement results of mechanical properties of those composites prove that their microstructure and properties depend on the volumetric content of TiB2 in a dispersed phase, and this dependence is significant.
SiC-based composites have the properties such as high hardness, wear resistance, and good chemical inertness; therefore, those composites constitute an alternative suitable for mechanical and tribological applications.
The elastic properties of the composites were measured using ultrasonic methods.
The mechanical properties of composites are shown in Table 2.
Kristic, Microstructure-mechanical properties relations in SiC-TiB2 composite.
SiC-based composites have the properties such as high hardness, wear resistance, and good chemical inertness; therefore, those composites constitute an alternative suitable for mechanical and tribological applications.
The elastic properties of the composites were measured using ultrasonic methods.
The mechanical properties of composites are shown in Table 2.
Kristic, Microstructure-mechanical properties relations in SiC-TiB2 composite.
Online since: September 2013
Authors: Bin Guo, Pan Xin Li, Hai Tian Jiang, Hao Tang
Starch content is an important parameter affecting starch plastics biodegradable performance, the higher starch content, the better performance of its degradation, while it also affects the mechanical strength and other properties.
Thermal properties.
Mechanical properties.
So the composition of the TPS/LDPE system is the key factors to determine the mechanical properties.
The tensile fracture surface figure TPS/LDPE shows that when the TPS content reached a certain level, it would cause the shifting between continuous phase and the dispersed phase, which affected the mechanical properties.
Thermal properties.
Mechanical properties.
So the composition of the TPS/LDPE system is the key factors to determine the mechanical properties.
The tensile fracture surface figure TPS/LDPE shows that when the TPS content reached a certain level, it would cause the shifting between continuous phase and the dispersed phase, which affected the mechanical properties.
Online since: July 2013
Authors: Zhi Min Fan, Liang Gao, Ru Cheng Liu, Hui Min Li
Assuming friction factors at different position of engagement are same and convection transfer rates of the tooth face and head face are same too.
The polyurethane material has low mechanical properties and will be easy to failure at 100℃ temperature [9-10].
(3) Many factors such as the convection coefficient, the friction factor, the environment temperature and the rotating speed will affect the temperature rise of the gear and the belt.
CHINESE JOURNAL OF MECHANICAL ENGINEERING, 2007, 43(6):1-6 [3] XU Zili.
Simulation of a steady temperature field and Analysis of factors affecting a worm gear[J].
The polyurethane material has low mechanical properties and will be easy to failure at 100℃ temperature [9-10].
(3) Many factors such as the convection coefficient, the friction factor, the environment temperature and the rotating speed will affect the temperature rise of the gear and the belt.
CHINESE JOURNAL OF MECHANICAL ENGINEERING, 2007, 43(6):1-6 [3] XU Zili.
Simulation of a steady temperature field and Analysis of factors affecting a worm gear[J].
Online since: June 2016
Authors: Jatinder Kumar, Ravinder Kataria, B.S. Pabla
Significant factors have been identified using analysis of variance (ANOVA) test.
Kataria et al. [8] reported that power rating and abrasive grit size are the main significant factors which affect the material removal rate and tool wear rate.
The process generally does not cause any significance alteration in the properties by means of surface damage [13].
There are three factors with two levels and remaining factors have three levels.
Two replicates were run for the full experiment, and all of the trials were completely randomized to entertain the nuisance factors.
Kataria et al. [8] reported that power rating and abrasive grit size are the main significant factors which affect the material removal rate and tool wear rate.
The process generally does not cause any significance alteration in the properties by means of surface damage [13].
There are three factors with two levels and remaining factors have three levels.
Two replicates were run for the full experiment, and all of the trials were completely randomized to entertain the nuisance factors.