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Online since: January 2013
Authors: Xing Pin Chen, Xue Chen, Jing Peng Zhang
Introduction
Recrystallization texture, which develops after annealing treatment in metal materials, depends on two factors: one is the orientation of recrystallized nuclei, the other one is that growth rate of different oriented grains is various.
The extent of recovery that occurs prior to recrystallization affects directly nucleation and growth of the recrystallizing nuclei.
And for this reason, recovery is often measured indirectly by some bulk technique, for example by following the change in some physical or mechanical property.
It is obvious that the recovery treatment of the cold-rolled sheet affected the recrystallization texture of nickel.
The extent of recovery that occurs prior to recrystallization affects directly nucleation and growth of the recrystallizing nuclei.
And for this reason, recovery is often measured indirectly by some bulk technique, for example by following the change in some physical or mechanical property.
It is obvious that the recovery treatment of the cold-rolled sheet affected the recrystallization texture of nickel.
Online since: December 2010
Authors: Hao Hua Zhang, Wen Jiang Feng, Li Juan Wu
The analyzing results reveal the parameters in complex networks can be used to represent property of software structure.
In development, the software structure is the mainly factor that affects software quality and complexity because contains all system information.
And some of them can be used to describe the property of software unit’s structural complexity.
Structure Complexity Metrics Some parameters can be combined to quantized measure several important properties of software structures.
The system describes all the mechanical and electrical equipments in the real hydropower, and simulates the whole working and controlling procedures.
In development, the software structure is the mainly factor that affects software quality and complexity because contains all system information.
And some of them can be used to describe the property of software unit’s structural complexity.
Structure Complexity Metrics Some parameters can be combined to quantized measure several important properties of software structures.
The system describes all the mechanical and electrical equipments in the real hydropower, and simulates the whole working and controlling procedures.
Online since: October 2013
Authors: Yu Wang, Jing Hai Zhou, Yao Wu, Yong Jun Liu
It was a combination of factors that brought down the towers.
Their study revealed that the PEF performance of steel frames was affected by the lateral deformation caused by the seismic ground motion [1].
In order to consider the effects of damages to the structural elements during the earthquake, degradation of material mechanical properties and heat penetration due to cracks, were considered for the post-earthquake fire analysis [2].
Conclusions Multi-hazards have occurred in various structures frequently, result in life and property loss, and led to serious damage even complete collapse of structures.
Their study revealed that the PEF performance of steel frames was affected by the lateral deformation caused by the seismic ground motion [1].
In order to consider the effects of damages to the structural elements during the earthquake, degradation of material mechanical properties and heat penetration due to cracks, were considered for the post-earthquake fire analysis [2].
Conclusions Multi-hazards have occurred in various structures frequently, result in life and property loss, and led to serious damage even complete collapse of structures.
Online since: September 2023
Authors: Bhavya Nidhi Vats, Raghvendra Gupta, Amit Gupta, S. Fatima, Deepak Kumar
Studies showed that the density and arrangement of active nanomaterial affect the performance of the Li-ion cell in addition to the size, structure, and composition.
It also affects the cyclic stability of the designed structure.
The electrochemical properties and cyclic behavior of fabricated coin cells were then investigated using Biologic VMP3 at room temperature.
Cyclic voltammetry profiles reveal the sharp lithiation/delithiation peaks for silicon which concludes TiO2 layer has transpirable properties which supports the exchange of lithium ions.
In comparison with bare silicon, Si@TiO2 improves the capacity retention with the 2x factor.
It also affects the cyclic stability of the designed structure.
The electrochemical properties and cyclic behavior of fabricated coin cells were then investigated using Biologic VMP3 at room temperature.
Cyclic voltammetry profiles reveal the sharp lithiation/delithiation peaks for silicon which concludes TiO2 layer has transpirable properties which supports the exchange of lithium ions.
In comparison with bare silicon, Si@TiO2 improves the capacity retention with the 2x factor.
Online since: July 2020
Authors: Poppy Puspitasari, Retno Wulandari, Sukarni Sukarni, Aloon Eko Widiono, Ardianto Prasetiyo
As a semiconductor type metal oxide group, TiO2 has strong and stable catalytic properties.
Equation (1) becomes: dαdt = Aβ еxp -EαRT(1-α)n (3) where T is the Kelvin temperature, R is the gas constant (0.008314 kJ/mol K), Ea is the activation energy (kJ/mol), and A is the pre-exponential factor (min-1).
Changes in Ea and A revealed that the addition of metal oxide (TiO2) affected the arrangement of the bonds in the chemical structure of microalgae [10, 16].
Oda, Bioflocculation of the oceanic microalga Dunaliella salina by the bloom- forming dinoflagellate Heterocapsa circularisquama , and its effect on biodiesel properties of the biomass, Bioresour.
Ma, Study on catalytic properties of potassium carbonate during the process of sawdust pyrolysis, Int.
Equation (1) becomes: dαdt = Aβ еxp -EαRT(1-α)n (3) where T is the Kelvin temperature, R is the gas constant (0.008314 kJ/mol K), Ea is the activation energy (kJ/mol), and A is the pre-exponential factor (min-1).
Changes in Ea and A revealed that the addition of metal oxide (TiO2) affected the arrangement of the bonds in the chemical structure of microalgae [10, 16].
Oda, Bioflocculation of the oceanic microalga Dunaliella salina by the bloom- forming dinoflagellate Heterocapsa circularisquama , and its effect on biodiesel properties of the biomass, Bioresour.
Ma, Study on catalytic properties of potassium carbonate during the process of sawdust pyrolysis, Int.
Online since: November 2013
Authors: Li He, Li Wei Zhao, Dong Wang, Bo Hao
Research on the Inspection Information Extraction from 3D Models of Sheet Metal Parts by the Photoelectric Equipments
Liwei Zhao1, a, Dong Wang2,b, Bo Hao3,c and Li He1,4,d
1 School of Mechanical Engineering, Shenyang Ligong University.
Although the concept of the digitization has gone deep into mechanical manufacturing industry, but lots of investigation indicate that the application of digitized inspection is still in attempt stage.
The sheet metal parts will deform because of their own weight, and the deformation will be aggravated when the measuring head contacts the sheet metal parts .It is the main factor that restricts adopting the high-precision digital equipments for inspecting, such as the three coordinates measuring machine.
Because the photoelectric equipments do not touch the parts during inspection, the thin-walled parts can be inspected by these equipments and the inspection accuracy does not be affected.
parts of the interface (CATIPrtContainer*) spInitOnDoc->GetRootContainer("CATIPrtContainer"); // A pointer Point to the root directory CATICkeParmFactory_var spCkeFact=spPartConatiner; //Define an interface is able to generates Variables and relationships if(spCkeFact==NULL_var) {cout<<"spCkeFact==NULL_var"<properties begin to show
****** number
:"<= 1; j--) // To do a loop,
{ // Get the parameter from the list CATICkeParm_var spParm = list[j];
// Can define a variable management parameters,
if(spParm == NULL_var)
continue;
CATUnicodeString pathName = spParm->Pathname();
// The establishment of a standard code string, Assigned spParm
if(j==list.Size()-4)
{ CATICkeInst_var oValue = spParm->Value(); // Define a parameter
Although the concept of the digitization has gone deep into mechanical manufacturing industry, but lots of investigation indicate that the application of digitized inspection is still in attempt stage.
The sheet metal parts will deform because of their own weight, and the deformation will be aggravated when the measuring head contacts the sheet metal parts .It is the main factor that restricts adopting the high-precision digital equipments for inspecting, such as the three coordinates measuring machine.
Because the photoelectric equipments do not touch the parts during inspection, the thin-walled parts can be inspected by these equipments and the inspection accuracy does not be affected.
parts of the interface (CATIPrtContainer*) spInitOnDoc->GetRootContainer("CATIPrtContainer"); // A pointer Point to the root directory CATICkeParmFactory_var spCkeFact=spPartConatiner; //Define an interface is able to generates Variables and relationships if(spCkeFact==NULL_var) {cout<<"spCkeFact==NULL_var"<
Online since: November 2011
Authors: Tian You Peng, Shuang Hou, Xiao Hua Sun, Xing Zhong Zhao, Xiu Leng Li
The effects of Fe doping on the microstructure, dielectric and tunable properties of thin films were analyzed.
For PST, Yang et al. reported the improved significantly dielectric and ferroelectric properties of Mn doped Pb0.5Sr0.5TiO3 thin films [H13H].
The structural and dielectric properties of PST thin films were characterized by various techniques.
The microstructure is one of the key parameters determining the dielectric properties.
The structural, surface morphological and dielectric properties of PST thin films were investigated as a function of Fe concentration.
For PST, Yang et al. reported the improved significantly dielectric and ferroelectric properties of Mn doped Pb0.5Sr0.5TiO3 thin films [H13H].
The structural and dielectric properties of PST thin films were characterized by various techniques.
The microstructure is one of the key parameters determining the dielectric properties.
The structural, surface morphological and dielectric properties of PST thin films were investigated as a function of Fe concentration.
Online since: March 2013
Authors: Jin Feng Jiao, Hai Li Sun
Although serious engineering accident does not happen, improper use of structure will lead to extremely uneven internal force distribution which will affect the structure’s ability to resist lateral force, especially under seismic load or other power loads.
Because transformation and reinforcement of existing building change the function of original structure as well as the mechanical characteristics, only from the point of view of strengthening the local component is far from enough.
On the other hand, it leads to inferior construction member rust removal, insufficient anti-rust primer cohesive force and comparatively short period use of paint, which often falls off in one to two years and affects the appearance of structure.
Based on above factors, in this coating project, different antirust processing modes are applied for original construction members and new ones.
Too big welding slot or improper welding process would result in welding residual stress between the old and new construction members and too large residual deformation, which affect properties of construction members and structure.
Because transformation and reinforcement of existing building change the function of original structure as well as the mechanical characteristics, only from the point of view of strengthening the local component is far from enough.
On the other hand, it leads to inferior construction member rust removal, insufficient anti-rust primer cohesive force and comparatively short period use of paint, which often falls off in one to two years and affects the appearance of structure.
Based on above factors, in this coating project, different antirust processing modes are applied for original construction members and new ones.
Too big welding slot or improper welding process would result in welding residual stress between the old and new construction members and too large residual deformation, which affect properties of construction members and structure.
Online since: July 2006
Authors: Beong Bok Hwang, G.M. Lee, Dong Hwan Jang, J.H. Ok
Therefore, the friction factor m at the die-workpiece interface in the simulation is assumed to be
0.05~0.15 [11].
To investigate the deformation patterns and characteristics of material flow into can and flange, the FEM simulation is conducted for selecting different gap heights (s), die corner radii (r) and friction factors (m), respectively.
Forming load increases significantly as friction factor increases when the gap height is small.
It is evident from the figure that the material flow is affected very much by the gap height for constant die corner radius.
The comparison has been attempted to investigate the effect of material properties, i.e. material parameter, on the flow characteristics into can.
To investigate the deformation patterns and characteristics of material flow into can and flange, the FEM simulation is conducted for selecting different gap heights (s), die corner radii (r) and friction factors (m), respectively.
Forming load increases significantly as friction factor increases when the gap height is small.
It is evident from the figure that the material flow is affected very much by the gap height for constant die corner radius.
The comparison has been attempted to investigate the effect of material properties, i.e. material parameter, on the flow characteristics into can.
Online since: November 2021
Authors: Dong Sheng Wang, Xing Hua Zhou, Xin Yu Zheng, Jing Wen Wang
Combining with previous experiments, three levels of the chosen six factors in the orthogonal experiment were determined.
Ranges of these six factors were 1700~2300 W, 4~5 mm·s-1, 20~30 g·min-1, 40~60 A, 300~500 Hz and 80~120 μs, respectively.
Zhang, Effect of applied angle on the microstructure evolution and mechanical properties of laser clad 3540 Fe/CeO2 coating assisted by in-situ ultrasonic vibration, Mater.
Ban, Effect of alternating current electric field on microstructure and properties of laser cladding Ni–Cr–B–Si coating, Ceram.
Li, Microstructure and properties of laser cladding NiCrBSi coating assisted by electromagnetic-ultrasonic compound field, Surf.
Ranges of these six factors were 1700~2300 W, 4~5 mm·s-1, 20~30 g·min-1, 40~60 A, 300~500 Hz and 80~120 μs, respectively.
Zhang, Effect of applied angle on the microstructure evolution and mechanical properties of laser clad 3540 Fe/CeO2 coating assisted by in-situ ultrasonic vibration, Mater.
Ban, Effect of alternating current electric field on microstructure and properties of laser cladding Ni–Cr–B–Si coating, Ceram.
Li, Microstructure and properties of laser cladding NiCrBSi coating assisted by electromagnetic-ultrasonic compound field, Surf.