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Online since: October 2012
Authors: Bing Li, Tian Bao Li, Yu Long Ye, Zhao Yang
Bi-metals enable a product to have two or more physical, chemical, mechanical properties of different metals, and achieve a metallurgical bonding on the interface [3-4].
Although each metal remains the original features, its comprehensive physical, chemical, mechanical properties are far superior to those of a single metal.
A few cracks occurred on the interfaces between primary silicon particles and the matrix, resulting in poor mechanical properties of cast Al-20 wt. % Si alloy.
Mechanical properties of the interfacial The mechanical properties of the bi-metal samples and the samples composed of single material were investigated by tensile test.
It is thought that if the heating time were decreased by induce heating, the mechanical properties of the bi-metal composite will be better; higher forging force is necessary to seal the voids occurred during hot forging, in order to improve the mechanical properties.
Although each metal remains the original features, its comprehensive physical, chemical, mechanical properties are far superior to those of a single metal.
A few cracks occurred on the interfaces between primary silicon particles and the matrix, resulting in poor mechanical properties of cast Al-20 wt. % Si alloy.
Mechanical properties of the interfacial The mechanical properties of the bi-metal samples and the samples composed of single material were investigated by tensile test.
It is thought that if the heating time were decreased by induce heating, the mechanical properties of the bi-metal composite will be better; higher forging force is necessary to seal the voids occurred during hot forging, in order to improve the mechanical properties.
Online since: July 2014
Authors: Jie Zhao
Compared with soil, rock has better mechanical property conditions, so it is common to see steeper and higher rock slopes without obvious sliding surface.
All these factors above and other influence factors as well as surface condition contribute to the control elements of rock slopes’ stability.
Fig.1 Sliding mode of typical rock slopes Long-term erosion unloading, weathering, underground water as well as blasting in the mountain have impact on the stability of slopes, and this influence is mainly express as affecting the strength parameters of joint combination in different depths.
The dynamic mechanical properties of unloading rock mass mainly reflected in degradation of mechanical constitutive relation, strength attenuation in unloading rock mass, increment of instable rock mass, reduction of rock mechanics parameters, and worsen of groundwater condition.
Research on Rock Mass Properties Near Anchor With Prestressing For TGP’S Permanent Shiplock, J.
All these factors above and other influence factors as well as surface condition contribute to the control elements of rock slopes’ stability.
Fig.1 Sliding mode of typical rock slopes Long-term erosion unloading, weathering, underground water as well as blasting in the mountain have impact on the stability of slopes, and this influence is mainly express as affecting the strength parameters of joint combination in different depths.
The dynamic mechanical properties of unloading rock mass mainly reflected in degradation of mechanical constitutive relation, strength attenuation in unloading rock mass, increment of instable rock mass, reduction of rock mechanics parameters, and worsen of groundwater condition.
Research on Rock Mass Properties Near Anchor With Prestressing For TGP’S Permanent Shiplock, J.
Online since: March 2017
Authors: I. Ketut Gede Sugita, I. Gusti Ngurah Priambadi
This condition affects to the low performance of the furnace so that influences the productivity of craftsmen.
The level of interference can affect workers’ comfort and directly affect the performance and productivity of the workers [4].
One of the factors that need to be considered to improve the performance of the furnace is how insulation systems do.
Increase the thermal efficiency of the combustion process using charcoal as fuel is strongly influenced by the properties, such as wood density, ash content and elemental composition of plants is determined and correlated with calorific value [8].
An assessment of Indian fuelwood with regards to properties and environmental impact.
The level of interference can affect workers’ comfort and directly affect the performance and productivity of the workers [4].
One of the factors that need to be considered to improve the performance of the furnace is how insulation systems do.
Increase the thermal efficiency of the combustion process using charcoal as fuel is strongly influenced by the properties, such as wood density, ash content and elemental composition of plants is determined and correlated with calorific value [8].
An assessment of Indian fuelwood with regards to properties and environmental impact.
Online since: September 2011
Authors: Jing Yuan, Ying Lin Li, Su Ying Chen
Because of many factors affect the yarn quality,how to select key parameters of the model structure is also explored.
Characteristics of BP artificial neural network is, when dealing with issues, not accurate mathematical model, but its structure variability and strong self-learning ability, gradually adapt to the various factors of the external environment, and constantly change their own behavior ,in order to achieve the purpose of the final solution.
Analysis and researched the main factors affecting the quality of spinning, coupled with the expertise and practical investigations, finally, determined the close relationship with the yarn quality index value and parameters easy to quantify as a predictive model input data, the physical indicators of raw cotton: Length of the upper part (mm), Micronaire, specific breaking strength(gf/tex), fiber regularity(%).
Although the model presented here still have large errors for predicting yarn properties directly, but to some extent, it is more accurately when predict some yarn indicator.
Beijing: Mechanical Industry Press, (2009)(In Chinese) [6] Guoyong Li.
Characteristics of BP artificial neural network is, when dealing with issues, not accurate mathematical model, but its structure variability and strong self-learning ability, gradually adapt to the various factors of the external environment, and constantly change their own behavior ,in order to achieve the purpose of the final solution.
Analysis and researched the main factors affecting the quality of spinning, coupled with the expertise and practical investigations, finally, determined the close relationship with the yarn quality index value and parameters easy to quantify as a predictive model input data, the physical indicators of raw cotton: Length of the upper part (mm), Micronaire, specific breaking strength(gf/tex), fiber regularity(%).
Although the model presented here still have large errors for predicting yarn properties directly, but to some extent, it is more accurately when predict some yarn indicator.
Beijing: Mechanical Industry Press, (2009)(In Chinese) [6] Guoyong Li.
Online since: December 2012
Authors: Min Xu, Chong Qing Xu, Liang Sun, Yue Xia Lv, Gui Huan Yan
Vol. 38 (2000), p. 1707
] investigated the CO2/N2 gas separation properties of a large series of poly (ethylene oxide) segmented copolymer with polyurethanes, polyamides and polyimides.
Carbon membranes combine improved gas transport properties for light gases with thermal and chemical stability.
Furthermore, the addition of inorganic materials in a polymer matrix offers enhanced physical, thermal and mechanical properties, representing a way to stabilize the polymer membrane against change in permselectivity with temperature.
Vol. 322 (2008), p. 423 ] investigated the effect of silica nano particles on the gas separation properties of ethylene vinyl acetate.
Membrane wetting is one of the most important factors affecting efficient CO2 separation process and long-term operation stability [[] Y.X.
Carbon membranes combine improved gas transport properties for light gases with thermal and chemical stability.
Furthermore, the addition of inorganic materials in a polymer matrix offers enhanced physical, thermal and mechanical properties, representing a way to stabilize the polymer membrane against change in permselectivity with temperature.
Vol. 322 (2008), p. 423 ] investigated the effect of silica nano particles on the gas separation properties of ethylene vinyl acetate.
Membrane wetting is one of the most important factors affecting efficient CO2 separation process and long-term operation stability [[] Y.X.
Online since: January 2012
Authors: Song Zhang, Yan Hong Yang
The Finite Element Analysis and Improvement Practice of Shaker Based on ANSYS
Song Zhang 1, a, Yanhong Yang 2,b
1 School of material and metallurgy, University of Science and Technology of Liaoning, Anshan 114051, China
2 School of Mechanical Engineering and Automation, University of Science and Technology LiaoNing, Anshan 114051,China
azstzd@126.com, banshanyyh@126.com
Keywords: Straight line shaker, finite element analysis, exciting force
Abstract.
Based on the shaker's performance, the inherent mode of vibration, the natural frequency and other factors were analyzed, an improvement method was proposed.
Table 1 Main Technical Parameters Properties of the Shaker Feed speed /(t·h-1) Hot sinter weight /(t·m-3) Sieve size /(㎜×㎜×㎜) Tilt α /( º) Vibration direction angle β/( º) Amplitude / mm Parameters 530 1.7~1.8 8300×3100×3500 4 40 13.6 According to the theory of mechanics, after two vibrators start and rapidly enter the constant speed synchronization reverse rotation condition, the forces produced by the eccentric part are counter-balanced in the cross section direction, and are synthesized as the exciting force in the longitudinal section direction.
Service Condition under Production After the improvement of shaker, the effect of service condition under production is obvious, the heat sieves continues to maintain high filtration efficiency, and the filtration efficiency is not affected.
[3] Kerry Wood studio:ANSYS5.7 Finite Element Analysis Tutorial,Beijing: Mechanical Industry PressVol.(2002), p.21-156,in Chinese.
Based on the shaker's performance, the inherent mode of vibration, the natural frequency and other factors were analyzed, an improvement method was proposed.
Table 1 Main Technical Parameters Properties of the Shaker Feed speed /(t·h-1) Hot sinter weight /(t·m-3) Sieve size /(㎜×㎜×㎜) Tilt α /( º) Vibration direction angle β/( º) Amplitude / mm Parameters 530 1.7~1.8 8300×3100×3500 4 40 13.6 According to the theory of mechanics, after two vibrators start and rapidly enter the constant speed synchronization reverse rotation condition, the forces produced by the eccentric part are counter-balanced in the cross section direction, and are synthesized as the exciting force in the longitudinal section direction.
Service Condition under Production After the improvement of shaker, the effect of service condition under production is obvious, the heat sieves continues to maintain high filtration efficiency, and the filtration efficiency is not affected.
[3] Kerry Wood studio:ANSYS5.7 Finite Element Analysis Tutorial,Beijing: Mechanical Industry PressVol.(2002), p.21-156,in Chinese.
Online since: October 2014
Authors: Olga Troynikov, Siti Hana Nasir
In this research, the elastic properties of three commercial fabrics commonly used for producing therapeutic compression gloves were investigated.
The amount of pressure generated by compression gloves are influence by the following factors: construction and fit of the glove; structure and physical properties of its materials; size and shape of the hand; and the nature of the hand activity undertaken [11].
These ranges of extension were determined based on the reduction factors which are commonly used for making compression gloves.
Marteau, Factors influencing the effectiveness of compression garments used in sports.
Yıldız, A novel technique to determine pressure in pressure garments for hypertrophic burn scars and comfort properties.
The amount of pressure generated by compression gloves are influence by the following factors: construction and fit of the glove; structure and physical properties of its materials; size and shape of the hand; and the nature of the hand activity undertaken [11].
These ranges of extension were determined based on the reduction factors which are commonly used for making compression gloves.
Marteau, Factors influencing the effectiveness of compression garments used in sports.
Yıldız, A novel technique to determine pressure in pressure garments for hypertrophic burn scars and comfort properties.
Online since: November 2011
Authors: Zhi Gang Wang, Ping Tan, Sui Chun Qu
The polar distance of TFSRM does not affect the location of the motor armature winding space, which provides wider freedom for designation.
,The factor of flux leakage can be minimized when the value of between 0.65-0.75, and the factor of flux leakage can be larger when the value of larger than 0.75 or smaller than 0.65 from Figure 5.
The change of gap lengtwill affect the output performance of the motor, the difficulty of processing and manufacturing costs.
Therefore, to got good magnetic properties, when design the motor, the air gap length should not be too large, but it can not be taken too small, so as not to increase the difficulty of machining and assembly of TFSRM.
Thus , the output power of motors , the torque ripple factors and motor manufacturing process required level should be taken into account when designed motors.
,The factor of flux leakage can be minimized when the value of between 0.65-0.75, and the factor of flux leakage can be larger when the value of larger than 0.75 or smaller than 0.65 from Figure 5.
The change of gap lengtwill affect the output performance of the motor, the difficulty of processing and manufacturing costs.
Therefore, to got good magnetic properties, when design the motor, the air gap length should not be too large, but it can not be taken too small, so as not to increase the difficulty of machining and assembly of TFSRM.
Thus , the output power of motors , the torque ripple factors and motor manufacturing process required level should be taken into account when designed motors.
Online since: March 2010
Authors: Hong Xiao Wang, Chun Sheng Wang, Chun Yuan Shi, Jing Fei Xiao
And the mechanical
tests and microstructure analysis were also taken in this study.
Introduction Recently stainless steel railway vehicles cause more and more attention for the lightweight body structure, high anti-corrosion, safety features, environmental factor and so on.
During the last few years, high power density welding processes have been widely applied in industrial manufacturing, because of their enormous advantages, such as minor shape distortions, reduction of heat affected zone (HAZ) size, and faster welding speed associated with deep penetrations[2].
The chemical components and mechanical properties of SUS301L are given in Table1.
Table 1 Chemical components and mechanical properties of SUS301L [4] Chemical components /% Mechanical properties C Si Mn P S Ni Cr N σs/ MPa σb/ MPa δ/ % HV <0.03 0 <1.0 0 <2.0 0 <0.04 5 <0.03 0 6.00-8.0 0 16.00-18.0 0 <0.2 0 >68 5 >93 0 >2 0 <21 8 A continuous wave (CW) disk laser (Trudisk4002) in TEM00 mode was used to laser weld the stainless steel plates with the power of 4 kW and a beam quality of 8 mm*mrad.
Introduction Recently stainless steel railway vehicles cause more and more attention for the lightweight body structure, high anti-corrosion, safety features, environmental factor and so on.
During the last few years, high power density welding processes have been widely applied in industrial manufacturing, because of their enormous advantages, such as minor shape distortions, reduction of heat affected zone (HAZ) size, and faster welding speed associated with deep penetrations[2].
The chemical components and mechanical properties of SUS301L are given in Table1.
Table 1 Chemical components and mechanical properties of SUS301L [4] Chemical components /% Mechanical properties C Si Mn P S Ni Cr N σs/ MPa σb/ MPa δ/ % HV <0.03 0 <1.0 0 <2.0 0 <0.04 5 <0.03 0 6.00-8.0 0 16.00-18.0 0 <0.2 0 >68 5 >93 0 >2 0 <21 8 A continuous wave (CW) disk laser (Trudisk4002) in TEM00 mode was used to laser weld the stainless steel plates with the power of 4 kW and a beam quality of 8 mm*mrad.
Online since: September 2018
Authors: Oluwole Daniel Makinde, R. Sivaraj, Sreedhar Rao Gunakala, H. Thameem Basha
This computational analysis explores the properties of uneven energy gain or loss on the fluid transport properties of a chemically reacting nanofluid with two types of geometries.
The transport properties during primary assumption are (5) The transport properties at the limits of the geometry at any time are (6) when= 1 corresponds to flow over a vertical cone and = = 0 corresponds to flow over a vertical flat plate.
Physically, this phenomenon shows that significantly affects the concentration and related thickness of the concentration boundary layer.
Journal of Mechanical Engineering Science, DOI: 10.1177/0954406217695847
International Journal of Mechanical Sciences,126 (2017) 308-318
The transport properties during primary assumption are (5) The transport properties at the limits of the geometry at any time are (6) when= 1 corresponds to flow over a vertical cone and = = 0 corresponds to flow over a vertical flat plate.
Physically, this phenomenon shows that significantly affects the concentration and related thickness of the concentration boundary layer.
Journal of Mechanical Engineering Science, DOI: 10.1177/0954406217695847
International Journal of Mechanical Sciences,126 (2017) 308-318