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Online since: October 2015
Authors: Guo Kun Qu
To study such a process, molecular dynamics (MD) can provide the necessary insight into machining process and allows investigating local material properties and behaviors in detail.
As is well know, the workpiece material properties, the machined surface integrity and tool wear are affected significantly by temperature and local stress distribution.
Moreover, these factors have significant effect on the performance of system and hard to measure by experiment.
For the sake of comparing the simulation result with macroscopic thermo-mechanism properties, and suitable data average algorithm should be taken.
The thermostat atoms (next to fix atoms) are so far away that they can not affect the temperature of Newton atoms significantly.
As is well know, the workpiece material properties, the machined surface integrity and tool wear are affected significantly by temperature and local stress distribution.
Moreover, these factors have significant effect on the performance of system and hard to measure by experiment.
For the sake of comparing the simulation result with macroscopic thermo-mechanism properties, and suitable data average algorithm should be taken.
The thermostat atoms (next to fix atoms) are so far away that they can not affect the temperature of Newton atoms significantly.
Online since: September 2013
Authors: Ning Ma, Zhen Xiong Cheng, Huan Tao Wu, Fu Xing Ye
Effects of HVOF spraying parameters on the microstructure and properties of submicron structural WC-12Co coatings were examined.
Carbide grain size and cobalt content play a vital role in determining the mechanical properties and the wear resistance of thermally sprayed WC-Co coatings.
Effects of spray distance on properties of WC-12Co coatings Spray distance is one of the important influence factors which determine the quality of coating[16].
Conclusions The effects of fuel flow rate and spray distance on WC-12Co coatings properties were investigated.
(2) The spray distance significantly influenced the coatings properties.
Carbide grain size and cobalt content play a vital role in determining the mechanical properties and the wear resistance of thermally sprayed WC-Co coatings.
Effects of spray distance on properties of WC-12Co coatings Spray distance is one of the important influence factors which determine the quality of coating[16].
Conclusions The effects of fuel flow rate and spray distance on WC-12Co coatings properties were investigated.
(2) The spray distance significantly influenced the coatings properties.
Online since: April 2015
Authors: Antonio Ferreira Miguel
In the first step, physical properties of nanofluids consisting of deionized water and different volume concentrations of Al2O3 nanoparticles is measured.
If n < 1 the fluid exhibits shear-thinning properties (pseudoplastic behavior) whereas if n > 1 the fluid shows shear-thickening behavior.
In both cases it is clear that, apart from the properties of porous structure, the hydraulic permeability depends on the properties of the permeant fluid [31,46,47].
Castro (Eds.), Nanofluids: Synthesis, Properties and Applications, Nova Science Pub., New York, 2014
Yang, Thermophysical and electrokinetic properties of nanofluids–a critical review, Applied Thermal Engineering. 28 (2008) 2109–2125
If n < 1 the fluid exhibits shear-thinning properties (pseudoplastic behavior) whereas if n > 1 the fluid shows shear-thickening behavior.
In both cases it is clear that, apart from the properties of porous structure, the hydraulic permeability depends on the properties of the permeant fluid [31,46,47].
Castro (Eds.), Nanofluids: Synthesis, Properties and Applications, Nova Science Pub., New York, 2014
Yang, Thermophysical and electrokinetic properties of nanofluids–a critical review, Applied Thermal Engineering. 28 (2008) 2109–2125
Online since: May 2011
Authors: Zhang Feng Zhu, Zheng Xing Guo
Introduction
The lateral resistance performance of new precast concrete shear wall (NPC wall), which are main lateral resistance members of structure system, determines the mechanical properties of the whole structure and should be deeply analyzed.
Considering that the cracks keep continuous across the interface between local cast-in-situ concrete and precast concrete, the horizontal connections haven’t significantly affected the force transmission.
Therefore the existence of vertical connections is the primary factor influencing NPC walls.
It’s only concerned about the effect of the arrangement of local cast-in-situ regions in this paper, whereas there are many other factors affecting the lateral resistance performance of NPC walls such as the shear-span ratio, the axial compression ratio, the width of local cast-in-situ region, configuration of connection reinforcements, etc.
Therefore, all the factors should be taken into account in the further research to fully understand the lateral resistance performance of NPC walls.
Considering that the cracks keep continuous across the interface between local cast-in-situ concrete and precast concrete, the horizontal connections haven’t significantly affected the force transmission.
Therefore the existence of vertical connections is the primary factor influencing NPC walls.
It’s only concerned about the effect of the arrangement of local cast-in-situ regions in this paper, whereas there are many other factors affecting the lateral resistance performance of NPC walls such as the shear-span ratio, the axial compression ratio, the width of local cast-in-situ region, configuration of connection reinforcements, etc.
Therefore, all the factors should be taken into account in the further research to fully understand the lateral resistance performance of NPC walls.
Online since: October 2014
Authors: Ke Sheng Wang, Gui Juan Lin
Many scientists [10,11,12,13,14,15] have studied the factors influencing the energy scavenging from the DEAP property.
For strains up to this maximum value the Mooney-Rivlin model is used to describe the viscoelastic properties of the DEAP material[22].
So that any contraction in the material thickness (direction) due to the electrostatic forces is converted into an elongation in the length direction (direction), For strains up to this maximum value the Mooney-Rivlin is used to describe the hyperelastic properties of the material.
Mechanical Interface is made of a pair of ball and roller bearings.
Mechanical Property and Power Generation Application Research on Dielectric Electro Active Polymer.
For strains up to this maximum value the Mooney-Rivlin model is used to describe the viscoelastic properties of the DEAP material[22].
So that any contraction in the material thickness (direction) due to the electrostatic forces is converted into an elongation in the length direction (direction), For strains up to this maximum value the Mooney-Rivlin is used to describe the hyperelastic properties of the material.
Mechanical Interface is made of a pair of ball and roller bearings.
Mechanical Property and Power Generation Application Research on Dielectric Electro Active Polymer.
Online since: January 2012
Authors: Xiao Hong Cheng
Radar level meter is also used for steam, mist, dust, volatile solvents and gases produce a variety of inert gas, of radar level measurement are not affected.
And most of the bulk material is much less than the diameter of 50mm, this is the current 25GHz radar is to measure bulk material properties of the best reasons for the choices.
Ultrasound is one of the categories are sound, are mechanical waves, the frequency range is higher than 20KHz is called ultrasonic sound waves.
Ash silo in central China power Junliangcheng use RF admittance meter, limited because of working conditions, affected by temperature, pressure, dielectric constant, the larger dust and other factors, RF admittance level meter materials and other issues often linked to the impact, the output signal to the instrument error caused by volatile, not ideal, discovery data drift serious, even appears in the display "dead"data phenomenon.
Radar level measuring device with good results in this, it reduces the labor intensity, avoid the influence of human factors, and the device reflects the timely, accurate measurement, to the production management provides the basis of accurate data.
And most of the bulk material is much less than the diameter of 50mm, this is the current 25GHz radar is to measure bulk material properties of the best reasons for the choices.
Ultrasound is one of the categories are sound, are mechanical waves, the frequency range is higher than 20KHz is called ultrasonic sound waves.
Ash silo in central China power Junliangcheng use RF admittance meter, limited because of working conditions, affected by temperature, pressure, dielectric constant, the larger dust and other factors, RF admittance level meter materials and other issues often linked to the impact, the output signal to the instrument error caused by volatile, not ideal, discovery data drift serious, even appears in the display "dead"data phenomenon.
Radar level measuring device with good results in this, it reduces the labor intensity, avoid the influence of human factors, and the device reflects the timely, accurate measurement, to the production management provides the basis of accurate data.
Online since: October 2011
Authors: Xiao Li Wu, Hui Juan Chen, Yue Yang Yao
So the research should start with the man's common property and the interrelated special property of product.
The knowledge and experience influence directly or indirectly has relation with the system that is used by client, so the designing of product must consider these factors completely. 2 Ergonomic analysis of numerical control machine 2.1 Ergonomic analysis of machine door Machine door is an important part of the machine shape, and it has more frequent contact with the machine operator.
There’re many factors to consider when designing the handle, as a grasping part, its diameter and length should be suit with man’s hand size to make it comfortable to grasp and easy to operate.
However, there are still many tools with short handles, which considers how the length of the handle affects man’s grip.
Human design in the appearance is the main point of machine design, so man-machine performance of the appearance will directly affect people's evaluation of the machine.
The knowledge and experience influence directly or indirectly has relation with the system that is used by client, so the designing of product must consider these factors completely. 2 Ergonomic analysis of numerical control machine 2.1 Ergonomic analysis of machine door Machine door is an important part of the machine shape, and it has more frequent contact with the machine operator.
There’re many factors to consider when designing the handle, as a grasping part, its diameter and length should be suit with man’s hand size to make it comfortable to grasp and easy to operate.
However, there are still many tools with short handles, which considers how the length of the handle affects man’s grip.
Human design in the appearance is the main point of machine design, so man-machine performance of the appearance will directly affect people's evaluation of the machine.
Online since: February 2012
Authors: Xue Song Zhang
The mechanism and influence factors of concrete carbonation can be seen in the reference [1].
To study the fly ash influence on the anti-carbonation of concrete properties, fly ash in concrete is increased from 10% to 60%.
Among the internal chemical factors influencing concrete carbonation depth, Ca(OH)2 is the main reaction, which can react with CO2 to slow the process of carbonation of concrete.
Water-binder ratio of high volume concrete containing fly ash carbonation properties Water-binder ratio of concrete carbonation has great impact on the carbonation: water-binder ratio change directly affects the concrete strength and the changes of concrete strength will affect the ability of concrete anti-carbonation ability.
Conclusions This high performance of high volume concrete containing fly ash carbonation properties are studied in this paper.
To study the fly ash influence on the anti-carbonation of concrete properties, fly ash in concrete is increased from 10% to 60%.
Among the internal chemical factors influencing concrete carbonation depth, Ca(OH)2 is the main reaction, which can react with CO2 to slow the process of carbonation of concrete.
Water-binder ratio of high volume concrete containing fly ash carbonation properties Water-binder ratio of concrete carbonation has great impact on the carbonation: water-binder ratio change directly affects the concrete strength and the changes of concrete strength will affect the ability of concrete anti-carbonation ability.
Conclusions This high performance of high volume concrete containing fly ash carbonation properties are studied in this paper.
Online since: September 2010
Authors: Kingliana Loeis, Bernd Christian Schuller, Hans Werner Hoffmeister
They have the
property of generating an electric potential in response to an applied mechanical stress and vice
versa.
When left uncompensated, these nonlinearities negatively affect the performance of piezo actuators and thereby limit their application.
Hysteresis modeling and compensation The active suction block's hysteresis output can be influenced by many factors.
The parameters c and k can be estimated using the value of m and the damped natural frequency and the damping factor observed through step or impulse response tests.
Bouc: Forced Vibration of Mechanical Systems with Hysteresis.
When left uncompensated, these nonlinearities negatively affect the performance of piezo actuators and thereby limit their application.
Hysteresis modeling and compensation The active suction block's hysteresis output can be influenced by many factors.
The parameters c and k can be estimated using the value of m and the damped natural frequency and the damping factor observed through step or impulse response tests.
Bouc: Forced Vibration of Mechanical Systems with Hysteresis.
Online since: October 2013
Authors: Ruo Kang Song, Mai Cang Zhang, Jian Xing Dong, Chen Yang Du
Mechanical properties of furnace tubes are also degraded after a long time service.
Moreover, creep voids and microcrack have emerged as mechanical properties of the material degrading.
It won’t be discussed here. 3.3 Mechanical properties degradation As is discussed above, the main changes of tube after high-temperature service are evolution of precipitated phases and zone partition of the tube’s inner-wall.
These microstructure changes can cause serious degradation on tube’s mechanical properties, and creep voids has already emerged in sample C, as is showed in Fig.1c and Fig.4c.
High temperature service heavily affected mechanical properties of the tubes.
Moreover, creep voids and microcrack have emerged as mechanical properties of the material degrading.
It won’t be discussed here. 3.3 Mechanical properties degradation As is discussed above, the main changes of tube after high-temperature service are evolution of precipitated phases and zone partition of the tube’s inner-wall.
These microstructure changes can cause serious degradation on tube’s mechanical properties, and creep voids has already emerged in sample C, as is showed in Fig.1c and Fig.4c.
High temperature service heavily affected mechanical properties of the tubes.