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Online since: March 2009
Authors: Ryuji Mukai, Dong Ying Ju, Hiroshi Suzuki
Moreover, from
Metallo-thermo-mechanical theory, simulation using the coupled analysis by finite element method
is carried out, and the residual stress is predicted.
As the factor, the measurement of d0 lattice spacing, young modulus E, poisson ratio ν in the distortionlessness condition is mentioned [2]. d0, E and ν intermingle in the material which was conducted the heat treatment, since it is different by material component and organization, and not uniform.
And, simulation using coupled analysis by finite element method is carried out from metallo-thermo-mechanical theory.
Physical property Measurement position Young's modular E (GPa) Poisson's ratio νννν Gear tooth top(Carbonizing 0.8wt% Oil quenching) 213.4 0.235 Gear tooth inside(Normal) 247.0 0.251 Residual stress measurement.
It is proven that the change of shape greatly affects residual stress like this.
As the factor, the measurement of d0 lattice spacing, young modulus E, poisson ratio ν in the distortionlessness condition is mentioned [2]. d0, E and ν intermingle in the material which was conducted the heat treatment, since it is different by material component and organization, and not uniform.
And, simulation using coupled analysis by finite element method is carried out from metallo-thermo-mechanical theory.
Physical property Measurement position Young's modular E (GPa) Poisson's ratio νννν Gear tooth top(Carbonizing 0.8wt% Oil quenching) 213.4 0.235 Gear tooth inside(Normal) 247.0 0.251 Residual stress measurement.
It is proven that the change of shape greatly affects residual stress like this.
Online since: July 2022
Authors: Luigi Tricarico, Maria Emanuela Palmieri
The properties of the tools shown in Table 2a are characteristics of commercially available powders (HTCS1) with high thermal conductivity that are used to manufacture tools with the L-PBF (Laser Powder Bed Fusion) technique.
The presence of such supports is not recommended as it can adversely affect the flow conditions inside the channels [18].
"Cooling systems design in hot stamping tools by a thermal-fluid-mechanical coupled approach."
Advances in Mechanical Engineering 6 (2014): 545727
"Determination of thermal and mechanical material properties of ultra‐high strength steels for hot stamping." steel research international 79.2 (2008): 98-104
The presence of such supports is not recommended as it can adversely affect the flow conditions inside the channels [18].
"Cooling systems design in hot stamping tools by a thermal-fluid-mechanical coupled approach."
Advances in Mechanical Engineering 6 (2014): 545727
"Determination of thermal and mechanical material properties of ultra‐high strength steels for hot stamping." steel research international 79.2 (2008): 98-104
Online since: March 2011
Authors: H.L. Zhao, Fang Yan, Ji Peng Liu
It involves too many human factors, and can not show the real effects satisfactorily.
If using the visualization computing, we input the sleeve, the steel bar physical property, and mechanics characteristic in the computer and establish model, we may see the different models of sleeve and steel bar under different pressure extrusion situations on the computer screen.
This may cause doing over, and also affect the building decoration effect.
After fully considering every kind of construction influence factors, we can establish construction system mathematics logical model, and develop suitable software based on the model.
Then we may obtain the most superior construction mechanical device necessary plan and the machinery use rate, formulate reasonable construction progress plan and construction organization plan, and grasp constructs the entire process perfectly, fleetly, and accurately.
If using the visualization computing, we input the sleeve, the steel bar physical property, and mechanics characteristic in the computer and establish model, we may see the different models of sleeve and steel bar under different pressure extrusion situations on the computer screen.
This may cause doing over, and also affect the building decoration effect.
After fully considering every kind of construction influence factors, we can establish construction system mathematics logical model, and develop suitable software based on the model.
Then we may obtain the most superior construction mechanical device necessary plan and the machinery use rate, formulate reasonable construction progress plan and construction organization plan, and grasp constructs the entire process perfectly, fleetly, and accurately.
Online since: September 2011
Authors: Rui Sun, Xiao Ming Yuan, Yong Zhi Wang
With large centrifugal shakers, the dynamic property and failure mechanism of soil mass and geotechnical structures can be more truly reappeared under the same gravity stress level as prototype.
Moreover their mechanical structure and laboratory structure possess their special characteristic and form.
The hoisting mouth of the operation hall should fully consider the pressure factor when the centrifuge is running, its cove plate is fastened from inside.
This situation seriously affects the normal work of equipment, for example, sensitivities of test sensors may have a significant change resulting in distortion of test results, changes in the resistance of controlled circuits may lead to control equipment unserviceable, with consequences disastrous beyond imagination.
However, in the process of vibration test, vibration of shaker, failure of model and other factors may generate a great instantaneous imbalance force, and such force must be taken fully into account in foundation design.
Moreover their mechanical structure and laboratory structure possess their special characteristic and form.
The hoisting mouth of the operation hall should fully consider the pressure factor when the centrifuge is running, its cove plate is fastened from inside.
This situation seriously affects the normal work of equipment, for example, sensitivities of test sensors may have a significant change resulting in distortion of test results, changes in the resistance of controlled circuits may lead to control equipment unserviceable, with consequences disastrous beyond imagination.
However, in the process of vibration test, vibration of shaker, failure of model and other factors may generate a great instantaneous imbalance force, and such force must be taken fully into account in foundation design.
Online since: November 2015
Authors: Su Xin Xu, Lu Yi Chen, Jian Gang Chen, Bi Jia Wang, Yi Qi Yang
Specifically, hydrolytic degradation under conventional aqueous dyeing conditions and low dye exhaustion are two limiting factors [5-11].
It affects the shade of dyed fabrics, cost of dyeing, colorfastness to laundering and wet crocking, and dyeing wastewater treatment.
The WLF parameters were derived using viscoelastic properties of polymers, which were obtained above Tg.
[2] Blackburn, R.S., et al., Effect of d-isomer concentration on the coloration properties of poly(lactic acid).
[7] Yang, Y., et al., Dyeing conditions and their effects on mechanical properties of polylactide fabric.
It affects the shade of dyed fabrics, cost of dyeing, colorfastness to laundering and wet crocking, and dyeing wastewater treatment.
The WLF parameters were derived using viscoelastic properties of polymers, which were obtained above Tg.
[2] Blackburn, R.S., et al., Effect of d-isomer concentration on the coloration properties of poly(lactic acid).
[7] Yang, Y., et al., Dyeing conditions and their effects on mechanical properties of polylactide fabric.
Online since: February 2020
Authors: L.G. Marques, Manoel Marcelo Prado, Bruno R.S. Silva, Marcelo Nascimento
Some mean physical properties of the polypropylene and bagasse particles are listed in Table 1.
Physical properties of the biomass and inert particles used Material dp [mm] rs [kg/m3] rb [kg/m3] polypropylene 3.45 900.9 549.4 bagasse 3.15 1450.2 148.8 Based on the properties listed in Table 1, it can be concluded that both the particles belong to the group D of Geldart and, therefore, are able to produce spouting regimes when subjected to the gas flow.
Figure 3 displays the response surface obtained for the drying time as a function of air temperature and biomass composition in the mixture, which were the factors that influenced statistically the response variable.
Although drying time is negatively affected by bagasse composition in the mixture, the higher the biomass volume fraction the higher the energy balance.
As the drying time was not affected by the Q/Qms ratio, a lower air flow rate helps to increase the energy gain, because the power consumption of the air compressor is reduced.
Physical properties of the biomass and inert particles used Material dp [mm] rs [kg/m3] rb [kg/m3] polypropylene 3.45 900.9 549.4 bagasse 3.15 1450.2 148.8 Based on the properties listed in Table 1, it can be concluded that both the particles belong to the group D of Geldart and, therefore, are able to produce spouting regimes when subjected to the gas flow.
Figure 3 displays the response surface obtained for the drying time as a function of air temperature and biomass composition in the mixture, which were the factors that influenced statistically the response variable.
Although drying time is negatively affected by bagasse composition in the mixture, the higher the biomass volume fraction the higher the energy balance.
As the drying time was not affected by the Q/Qms ratio, a lower air flow rate helps to increase the energy gain, because the power consumption of the air compressor is reduced.
Online since: October 2023
Authors: Sheam Bahjat Abdulkareem
Water's physical and chemical properties, as well as its capacity for self-purification, degradation, migration, and transformation, can be affected by the presence of organic matter. [7, 8, 9]
1-2- Resources of organic wastewater
Organic pollutants, which make up the majority of contaminants in wastewater, are just one type.
The above-mentioned carcinogenic, teratogenic, and neurotoxic properties of many POPs, which are lipid soluble, are present.
Studying the main factors influencing this oxidation, such as the doses of H2O2 and Fe2+ and the dosing strategy of H2O2 at a pH value of about 3, helped treat this water by oxidizing it with Fenton Fe2+ H2O2.
The properties of the influent, the technique we used, the effluent's qualities, and the time spent treating them all, etc. all have an impact on the overall cost.
[13] Van den Berg M., Birnbaum L, Bosveld ATC.Toxic Equivalency Factors (TEFs) for PCBs, PCDDs, PCDFs for Humans and Wildlife.Environ.
The above-mentioned carcinogenic, teratogenic, and neurotoxic properties of many POPs, which are lipid soluble, are present.
Studying the main factors influencing this oxidation, such as the doses of H2O2 and Fe2+ and the dosing strategy of H2O2 at a pH value of about 3, helped treat this water by oxidizing it with Fenton Fe2+ H2O2.
The properties of the influent, the technique we used, the effluent's qualities, and the time spent treating them all, etc. all have an impact on the overall cost.
[13] Van den Berg M., Birnbaum L, Bosveld ATC.Toxic Equivalency Factors (TEFs) for PCBs, PCDDs, PCDFs for Humans and Wildlife.Environ.
Online since: October 2016
Authors: Bradley P. Wynne, Martin Jackson, Emma Calvert
Introduction
Messier-Bugatti-Dowty aim to produce landing gear which supports the aerospace industry’s drive to reduce the environmental impact of air travel: by improving the corrosion properties and reducing the weight of their landing gear, which is currently mostly made from high strength stainless steel [1].
One way to implement these changes is to alter the landing gear material; titanium alloys have better corrosion properties and better strength-to-weight ratio than stainless steel so they are an obvious alternative.
The graphite foil also protects the die and punches from mechanical damage.
This is an advantage as grain boundary alpha detrimentally affects ductility[12, 13].
Li (Ed.), Microstructure and Properties of Materials Volume 2, World Scientific, Singapore, 2000
One way to implement these changes is to alter the landing gear material; titanium alloys have better corrosion properties and better strength-to-weight ratio than stainless steel so they are an obvious alternative.
The graphite foil also protects the die and punches from mechanical damage.
This is an advantage as grain boundary alpha detrimentally affects ductility[12, 13].
Li (Ed.), Microstructure and Properties of Materials Volume 2, World Scientific, Singapore, 2000
Online since: August 2023
Authors: Rachid Malek, Khalil Kassmi, Sara Sabri
In a mechanical stack, the junctions are fabricated separately.
These factors are aimed at minimizing losses using various techniques.
It is favored for its good quality, carrier transport properties, thermal expansion, and compatibility with different semiconductor materials in terms of lattice constant [9].
But, it is more difficult to adjust the voltages, because the voltages are intrinsic properties of the material.
Adachi, Properties of semiconductor alloys: group-IV, III-V and II-VI semiconductors.
These factors are aimed at minimizing losses using various techniques.
It is favored for its good quality, carrier transport properties, thermal expansion, and compatibility with different semiconductor materials in terms of lattice constant [9].
But, it is more difficult to adjust the voltages, because the voltages are intrinsic properties of the material.
Adachi, Properties of semiconductor alloys: group-IV, III-V and II-VI semiconductors.
Online since: August 2013
Authors: Wen Wu Liu, Hai Feng Li, Zheng Tao Yan
Pump group of floating raft frame vibration isolation system belongs to hang-floating valve gear the whole system is composed of hexahedral seven-vibration isolator, raft frame and equipment which including three accumulators, two hydraulic pumps, two cooling water pumps, and one centrifugal pump, one bilge pump, distilled one water pump, one dry pump, one auxiliary cooling pump, ice mechanical and one electrical motor.
Passive Vibration Isolation, New York: The American Society of Mechanical Engineers, 2003
Study on Friction and Wear Property and Lubricant Mechanism of Water Lubricated Bearing, PhD Dissertation, Chongqing University, China, 2003
[4] Mars W V,Fatemi A.Factors that affect the fatigue life of rubber:a literature survey.Rubber Chemistry and Technology.2004,77(3):391-412
Passive Vibration Isolation, New York: The American Society of Mechanical Engineers, 2003
Study on Friction and Wear Property and Lubricant Mechanism of Water Lubricated Bearing, PhD Dissertation, Chongqing University, China, 2003
[4] Mars W V,Fatemi A.Factors that affect the fatigue life of rubber:a literature survey.Rubber Chemistry and Technology.2004,77(3):391-412