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Online since: March 2014
Authors: Ching Wen Lou, Rui Wang, Jia Horng Lin, Cheng Wang, Ruo Si Yan
The results showed that the addition of Kevlar fibers enhanced the mechanical properties of hybrid nonwovens.
Two key factors during thermal treatment are temperature and duration.
Tear properties Figure 3 demonstrates the tear strength of HRBP/Kevlar hybrid nonwovens as a result of various thermal treatment conditions and fiber blending ratios.
Bursting properties Bursting strength is mainly related to the tensile strength and elongation of the nonwovens.
The hybrid nonwovens exhibited excellent mechanical properties with the addition of Kevlar fibers.
Two key factors during thermal treatment are temperature and duration.
Tear properties Figure 3 demonstrates the tear strength of HRBP/Kevlar hybrid nonwovens as a result of various thermal treatment conditions and fiber blending ratios.
Bursting properties Bursting strength is mainly related to the tensile strength and elongation of the nonwovens.
The hybrid nonwovens exhibited excellent mechanical properties with the addition of Kevlar fibers.
Online since: October 2015
Authors: Hao Zhou, Ting Lei, Yue Min Gao, Guang Yan Chen
This thesis is designed to study the mechanical properties of the brushes, friction pair wear properties, and its impact on friction pair contact resistance, taking the brushes and gold sheet components as objects.
Factors Affecting the Friction Pair Contact Resistance In Fig. 1 are brushes and the gold sheet components, according to the theory of electrical contact [6], the contact resistance can be expressed as: Eq.1 ρA: The resistivity of the material A,Ω·m; ρB: The resistivity of the material B,Ω·m; n: Reaction friction contact state; H: Hardness, N/mm2; F: Contact pressure N.
Elastic Properties of AuNi9 Brush Experiment.
(a)3-D shape (b)plane nephogram Fig.6 Results of 4.3gf contact pressure wear test Experiments on Environmental Suitability of Friction Contact Resistance The foregoing experiments of the elastic properties of brush and the tests of friction and wear properties do not take environmental factors (such as vibration, temperature, shock, heat, etc.) into account.
Li: Preparation and properties of Ag-Cu-MoS2 brush materials [J].
Factors Affecting the Friction Pair Contact Resistance In Fig. 1 are brushes and the gold sheet components, according to the theory of electrical contact [6], the contact resistance can be expressed as: Eq.1 ρA: The resistivity of the material A,Ω·m; ρB: The resistivity of the material B,Ω·m; n: Reaction friction contact state; H: Hardness, N/mm2; F: Contact pressure N.
Elastic Properties of AuNi9 Brush Experiment.
(a)3-D shape (b)plane nephogram Fig.6 Results of 4.3gf contact pressure wear test Experiments on Environmental Suitability of Friction Contact Resistance The foregoing experiments of the elastic properties of brush and the tests of friction and wear properties do not take environmental factors (such as vibration, temperature, shock, heat, etc.) into account.
Li: Preparation and properties of Ag-Cu-MoS2 brush materials [J].
Online since: April 2018
Authors: Martin Reznicek, Martin Ovsik, Lenka Hylova, Katerina Zetkova
The second option to use fillers is to improve their mechanical properties from different perspectives.
Cloisite includes a wide range of applications that help improve mechanical and thermal properties.
A slight deterioration of the properties can be observed for the plate-shaped filler, but the 8% drop may not represent a significant value compared to other mechanical properties that can affect this filler.
However, the decisive factor for choosing the right filler is, of course, not only creep properties, but the complex results of the mechanical tests and, above all, the particular use of the components made of the modified material.
Mechanical and thermal properties of bamboo pulp fiber reinforced polyethylene composites.
Cloisite includes a wide range of applications that help improve mechanical and thermal properties.
A slight deterioration of the properties can be observed for the plate-shaped filler, but the 8% drop may not represent a significant value compared to other mechanical properties that can affect this filler.
However, the decisive factor for choosing the right filler is, of course, not only creep properties, but the complex results of the mechanical tests and, above all, the particular use of the components made of the modified material.
Mechanical and thermal properties of bamboo pulp fiber reinforced polyethylene composites.
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 2014
Authors: E Wen Huang, Shao Pin Lin, H.J. Chen, Ge Ping Yu, J.Y. Huang, R.C. Kuo, Jia Hong Huang
The mechanical properties of different welding are compared by examining their tensile behaviors at room temperature and 288 °C, respectively.
The local mechanical properties are mapped via hardness tests and the local microstructure is revealed by both of the ferrite number (FN) estimation and conventional metallographic examination.
For the microhardness shown in Figure 2(a), there are a few factors affecting the hardness: (1) the residual ferrite content which can strengthen the dual phase microstructure, (2) the morphology of ferrite where lathy ferrite is harder than vermicular ferrite [3], (3) grain coarsening due to higher heat input, (4) grain refining at the boundaries of each welding pass [4], and (5) work hardening during cooling of weldments with restrain [5].
The first three factors may be related to a higher hardness in the SMA welds, while more passes used in GTAW process may lead to a higher hardness resulting from the last two factors.
The microstructures of the welds were examined and the mechanical properties were measured, respectively.
The local mechanical properties are mapped via hardness tests and the local microstructure is revealed by both of the ferrite number (FN) estimation and conventional metallographic examination.
For the microhardness shown in Figure 2(a), there are a few factors affecting the hardness: (1) the residual ferrite content which can strengthen the dual phase microstructure, (2) the morphology of ferrite where lathy ferrite is harder than vermicular ferrite [3], (3) grain coarsening due to higher heat input, (4) grain refining at the boundaries of each welding pass [4], and (5) work hardening during cooling of weldments with restrain [5].
The first three factors may be related to a higher hardness in the SMA welds, while more passes used in GTAW process may lead to a higher hardness resulting from the last two factors.
The microstructures of the welds were examined and the mechanical properties were measured, respectively.
Online since: March 2012
Authors: Qiang Li, Jing Yuan Yu
Mass segregation of Al2O3 slurries during centrifugal slip casing has important effect on microstructure and mechanical property of sintered Al2O3 ceramic, so the study on effect of centrifugal process parameters on mass segregation of slurries has significant meaning.
Introduction Alumina has several special properties like high hardness, chemical inertness, wear resistance, and high resistance to thermal and corrosive environments, which are widely applied in the fields of mechanical engineering, electronic technology, chemical engineering and biological engineering [1-4].
However, with the difference of fabrication process, microstructure and mechanical property of Al2O3 ceramic are different.
However, mass segregation of slurries came from particle size difference in the initial powder is obvious during centrifugal slip casting, which can affect the microstructure and mechanical property of sintered Al2O3 ceramic.
In a monolithic system with low solid content, the following second-order differential equation is obtained to describe the particle movement using Newton’s second law: (4) Integration of Eq.(4) over time t results in [6]: (5) In slurries with high solid content, v is corrected by the correction factors h(φ) [7] (φ is solid content of slurries) and is expressed by: (6) As can be seen in Eq.(6), the settling velocity of Al2O3 particles can be affected by particle size, acceleration and solid content of slurries.
Introduction Alumina has several special properties like high hardness, chemical inertness, wear resistance, and high resistance to thermal and corrosive environments, which are widely applied in the fields of mechanical engineering, electronic technology, chemical engineering and biological engineering [1-4].
However, with the difference of fabrication process, microstructure and mechanical property of Al2O3 ceramic are different.
However, mass segregation of slurries came from particle size difference in the initial powder is obvious during centrifugal slip casting, which can affect the microstructure and mechanical property of sintered Al2O3 ceramic.
In a monolithic system with low solid content, the following second-order differential equation is obtained to describe the particle movement using Newton’s second law: (4) Integration of Eq.(4) over time t results in [6]: (5) In slurries with high solid content, v is corrected by the correction factors h(φ) [7] (φ is solid content of slurries) and is expressed by: (6) As can be seen in Eq.(6), the settling velocity of Al2O3 particles can be affected by particle size, acceleration and solid content of slurries.
Online since: January 2012
Authors: Shu Rong Wang, Yue Ling Gu, Qian Qian Yin, Xin Bao Li, Zuo Gang Guo, Zhong Yang Luo
To obtain high combustion properties, the bio-oil upgrading technology was widely employed, since the inferior properties of bio-oil, such as low heating value, high oxygen content, high water content, acidity and instability, limit its application [1].
Surface tension and viscosity are two important physico-chemical properties in the process of emulsification, which can affect the application and stability of emulsion system greatly.
Some properties of bio-oil and 0# diesel were shown in TABLE 1.
Surface tension is one of important factors on the stability of emulsion system.
Viscosity and surface tension were two important factors which affected the stability of emulsion.
Surface tension and viscosity are two important physico-chemical properties in the process of emulsification, which can affect the application and stability of emulsion system greatly.
Some properties of bio-oil and 0# diesel were shown in TABLE 1.
Surface tension is one of important factors on the stability of emulsion system.
Viscosity and surface tension were two important factors which affected the stability of emulsion.
Online since: September 2022
Authors: Jian Yu Chen, Xiao Zhang, Xian Shuai Chen, Jin Yang Zhang
The FE analysis was used to investigate its static mechanical property.
The osseointegration ability of dental implants is one of the key factors to ensure the success of implant surgery [2].
However, these methods cannot accurately control the pore properties of the scaffold [11].
Fig. 2 a) Machined components of SPDI (including UCP, PTP, LRP and locking screw). b) Assembled SPDI Finite Element Analysis To determine the mechanical properties of SPDI, the FE model was created as shown in Figure 3.
Factors Affecting Crestal Bone Loss With Dental Implants Partially Covered With a Porous Coating: A Finite Element Analysis.
The osseointegration ability of dental implants is one of the key factors to ensure the success of implant surgery [2].
However, these methods cannot accurately control the pore properties of the scaffold [11].
Fig. 2 a) Machined components of SPDI (including UCP, PTP, LRP and locking screw). b) Assembled SPDI Finite Element Analysis To determine the mechanical properties of SPDI, the FE model was created as shown in Figure 3.
Factors Affecting Crestal Bone Loss With Dental Implants Partially Covered With a Porous Coating: A Finite Element Analysis.
Online since: January 2006
Authors: Gai Fei Peng, Sammy Yin Nin Chan, Qi Ming Song, Quan Xin Yi
Residual mechanical properties reported
in most previous literature might be overestimated, where natural cooling was usually employed.
It was believed that the main factors affecting the strength were a loss in strength of mortar, formation of cracks, and the dehydration of calcium hydrate.
Mechanical properties of concrete exposed to high temperature were also investigated by W.
Therefore, the effect of cooling regimes on mechanical properties of concrete is of great concern.
From the viewpoint of the four stages, heating rate and high temperature level are the two factors which influence the concrete properties more significantly than other factors. 2.
It was believed that the main factors affecting the strength were a loss in strength of mortar, formation of cracks, and the dehydration of calcium hydrate.
Mechanical properties of concrete exposed to high temperature were also investigated by W.
Therefore, the effect of cooling regimes on mechanical properties of concrete is of great concern.
From the viewpoint of the four stages, heating rate and high temperature level are the two factors which influence the concrete properties more significantly than other factors. 2.
Online since: October 2010
Authors: Tsugio Sato, Shu Yin, Yoshihiro Minamidate
(a),(c): with mechanical grinding; (b),(d)without mechanical grinding.
Fig. 6 Effect of NaHCO3 aqueous solutions concentration on the particle size, UV shielding property factors, (a) particle size; (b) UVA/Vis factor ; (c) UVB/Vis factor.
Figure 6 summarized the effect of sodium hydrogen carbonate concentration on the final CeO2 particle size and UV shielding property factors.
It was also confirmed that the particle size had a great affect on the UV shielding properties of the thin film consisted of the plate-like ceria particles.
Especially, the products showed excellent multifunctional properties such as excellent UV-shielding property as well as excellent comfort.
Fig. 6 Effect of NaHCO3 aqueous solutions concentration on the particle size, UV shielding property factors, (a) particle size; (b) UVA/Vis factor ; (c) UVB/Vis factor.
Figure 6 summarized the effect of sodium hydrogen carbonate concentration on the final CeO2 particle size and UV shielding property factors.
It was also confirmed that the particle size had a great affect on the UV shielding properties of the thin film consisted of the plate-like ceria particles.
Especially, the products showed excellent multifunctional properties such as excellent UV-shielding property as well as excellent comfort.