Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: July 2011
Authors: Yan Chen, M.M. Zhang, Y.J. Li, Z.Q. Liu, G.B. Liao
Based on the above situation, this paper proposes to produce composite magnetic materials of high properties with rapid sintering etc. finishing process through analysing and assessing the magnetism and two-phase microstructure and constituents so that the magnetic abrasive particles with best magnetism can be developed and the key technology for manufacturing new composite materials can be achieved.
Generally speaking, iron will not be melt but molten and this provides good conditions for aluminium oxide being embedded into its surface, it therefore concluded that temperature control is a critical factors in making magnetic abrasive by sintering process.
The ratio of reduced iron and abrasive particle size is another critical factor affecting magnetic abrasive finishing, particle size is better at a ratio of 5:3.
Thirdly, the sintering time affects magnetic abrasive finishing.
Seeing from Testwork 1, it is distributed in layers from inner to outer, besides the overflowing of iron, it also attributes to the time of sintering, theoretically speaking , the iron in the middle layer can overflow, the iron in the core should also flow towards the middle layer, there should be the least Fe in the core, but the result is just opposite, it shows that the billet is not thoroughly sintered during sintering process, therefore sintering time is also a critical factor affecting even distribution of abrasive materials.
Generally speaking, iron will not be melt but molten and this provides good conditions for aluminium oxide being embedded into its surface, it therefore concluded that temperature control is a critical factors in making magnetic abrasive by sintering process.
The ratio of reduced iron and abrasive particle size is another critical factor affecting magnetic abrasive finishing, particle size is better at a ratio of 5:3.
Thirdly, the sintering time affects magnetic abrasive finishing.
Seeing from Testwork 1, it is distributed in layers from inner to outer, besides the overflowing of iron, it also attributes to the time of sintering, theoretically speaking , the iron in the middle layer can overflow, the iron in the core should also flow towards the middle layer, there should be the least Fe in the core, but the result is just opposite, it shows that the billet is not thoroughly sintered during sintering process, therefore sintering time is also a critical factor affecting even distribution of abrasive materials.
Online since: December 2010
Authors: Xing Wang, Fan Wang
Plate-cone reticulated shell has good mechanical behavior, technical economy and architectural appearance.
By analysing the internal force wind load factors of top members in the span direction of different rank’s cones in Figure3 and Figure4, the following can be obtained: 1) Along the span direction, wind load factors of top members change along with the shape factors.
According to the wind load factors of the above model, the wind load factors of this type of model are processed by comparing in this paper, the following wind load factors are recommended: The wind load factor of top member is suggested as 1.5.
Under the wind load, due to wind’s suction, deflection of the shell is reduced, the maximum deflections of the shell decrease to 10.12mm and 12.25mm. 5) The change of plate material has affect only on the local internal force of plate itself, but has little affect on the whole mechanical properties of shell.
The wind load factors of top members along the span direction range from 1.02 to 1.5, the wind load factors are larger where the shape factors are larger.
By analysing the internal force wind load factors of top members in the span direction of different rank’s cones in Figure3 and Figure4, the following can be obtained: 1) Along the span direction, wind load factors of top members change along with the shape factors.
According to the wind load factors of the above model, the wind load factors of this type of model are processed by comparing in this paper, the following wind load factors are recommended: The wind load factor of top member is suggested as 1.5.
Under the wind load, due to wind’s suction, deflection of the shell is reduced, the maximum deflections of the shell decrease to 10.12mm and 12.25mm. 5) The change of plate material has affect only on the local internal force of plate itself, but has little affect on the whole mechanical properties of shell.
The wind load factors of top members along the span direction range from 1.02 to 1.5, the wind load factors are larger where the shape factors are larger.
Online since: June 2014
Authors: Marion Merklein, Stephan Tremmel, Ulf Engel, Tobias Schrader, Martin Weschta, Sandro Wartzack
The mechanical properties of the cross-section of specimens are determined by Vickers hardness to approve the material flow.
Normally, mechanical tappets can rotate within its guidance.
The friction factors for extrusion punch and die mp = md were set to 0.15 for the basic model.
Fig. 6: Influence of friction factor on cup heights.
On contrary, the accuracy of microstructures is affected by the extrusion process.
Normally, mechanical tappets can rotate within its guidance.
The friction factors for extrusion punch and die mp = md were set to 0.15 for the basic model.
Fig. 6: Influence of friction factor on cup heights.
On contrary, the accuracy of microstructures is affected by the extrusion process.
Online since: August 2008
Authors: Lan Cai, Ming Zhou, Jia Hong Yang, Xia Ye, Ao Ran Zheng, Gang Li, Pei Fang Yang, Yi Zhu
Experimental data presented in this paper indicate that different surface
roughness and wettability are the important factors for blood platelet adhesion.
Various studies have shown that the interfacial interactions are related to surface properties such as surface chemical composition, surface wettability and surface roughness[7-9].
Blood platelet adhesion test was carried out to estimate blood compatibility, with a view to the influential factors of surface roughness and wettabililty.
The disfigurement is primarily resulted from that PDMS did not penetrate into silicon mold, which was related to factors of degassing time, mold cleanness and curing temperature.
They react with artificial surface, aggregate together and release coagulation factors.
Various studies have shown that the interfacial interactions are related to surface properties such as surface chemical composition, surface wettability and surface roughness[7-9].
Blood platelet adhesion test was carried out to estimate blood compatibility, with a view to the influential factors of surface roughness and wettabililty.
The disfigurement is primarily resulted from that PDMS did not penetrate into silicon mold, which was related to factors of degassing time, mold cleanness and curing temperature.
They react with artificial surface, aggregate together and release coagulation factors.
Online since: July 2017
Authors: Janusz Szymczak, Andrzej Szczepankowski
The mentioned deterioration process affecting blade surfaces of turbine blade rims is analyzed on the basis of continuous monitoring that has been carried out to date.
Thus, the higher mass flow rates for fuel and, consequently, unsigned dimensions of fuel stream leaving the injector nozzle, the more difficult it can be deformed (defected) due to inertia forces, viscosity and other flow-hindering factors that lead to pressure oscillations.
It is one of the factors that have been taken into account so far to decide about further operation of the object that subjects to the wear and tear process.
Strength of material that is used for manufacturing of blades of turbine units for aircraft engines can be determined under the assumption that mechanical properties of the fracture development subjects to linear laws [7-8].
It is why cyclical loads may entail propagation of fissures and cracks at stress factors that are even less than the critical limits, which was already demonstrated in [7-8].
Thus, the higher mass flow rates for fuel and, consequently, unsigned dimensions of fuel stream leaving the injector nozzle, the more difficult it can be deformed (defected) due to inertia forces, viscosity and other flow-hindering factors that lead to pressure oscillations.
It is one of the factors that have been taken into account so far to decide about further operation of the object that subjects to the wear and tear process.
Strength of material that is used for manufacturing of blades of turbine units for aircraft engines can be determined under the assumption that mechanical properties of the fracture development subjects to linear laws [7-8].
It is why cyclical loads may entail propagation of fissures and cracks at stress factors that are even less than the critical limits, which was already demonstrated in [7-8].
Online since: January 2006
Authors: Chi Cheng Cheng, Chin Yin Chen
To achieve success, a crucial factor is the choice of an applicable model during all
the steps of this design procedure.
Mechanical structure design.
(a) Major mechanical structure (b) The first resonance mode of the mechanical structure Fig. 3 Characteristics of major mechanical structures for a feed drive system.
The value of tM directly affects the physical properties of the saddle.
During the integrated design process, the aim is not only to complete a final design, but also identify the performance-limiting factors of the design proposal and to choose satisfactory specifications for these factors.
Mechanical structure design.
(a) Major mechanical structure (b) The first resonance mode of the mechanical structure Fig. 3 Characteristics of major mechanical structures for a feed drive system.
The value of tM directly affects the physical properties of the saddle.
During the integrated design process, the aim is not only to complete a final design, but also identify the performance-limiting factors of the design proposal and to choose satisfactory specifications for these factors.
Online since: February 2014
Authors: N.A. Johari, F.W. Badrudin, M.F.M. Taib, N.H. Hussin, M.Z.A. Yahya, Oskar Hasdinor Hassan
Establishment of Structural and Elastic Properties of Titanate Compounds based on Pb, Sn, and Ge by First-Principles Calculation
N.H.
These materials originate mainly from the special chemical properties of Pb2+ cation in the A site in perovskite oxide.
Non-bonded lone pair 6s2 electrons are important factors in obtaining large polar displacement, which introduces large elastic deformations and electric polarizations.
Calculated elastic properties of the tetragonalities (P4mm) of PTO, SnTO, and GTO at 0 GPa.
-K Chan: Dielectric and elastic properties of ferroelectric materials at elevated temperature.
These materials originate mainly from the special chemical properties of Pb2+ cation in the A site in perovskite oxide.
Non-bonded lone pair 6s2 electrons are important factors in obtaining large polar displacement, which introduces large elastic deformations and electric polarizations.
Calculated elastic properties of the tetragonalities (P4mm) of PTO, SnTO, and GTO at 0 GPa.
-K Chan: Dielectric and elastic properties of ferroelectric materials at elevated temperature.
Online since: May 2013
Authors: Jin Feng Bai, Hong Jun Chen
These almost constant factors also have the same effect on the quality of coke or cause little change, so the factors affecting the quality of coke can be narrowed down to the quality of the coal blending.
Coke mechanical strength, thermal properties are related to the degree of metamorphism.
If volatile and caking index (G or Y) are used to predict the mechanical strength of coke, two mixed coals with same volatile matters and same adhesion coke with same kinds of coal respectively, the quality of the resulting coke will have big difference.
The method also excludes bond index which greatly affects the mechanical strength of coke, sometimes resulting in low predictor accuracy, prediction accuracy will be affected greatly when the coal source changes, greatly reducing forecast accuracy of the coke quality indicators.
Case Study This study uses the foreground program, extracts 99 effective coal blending programs of experimental coke oven from database, in order to compare the accuracy of the prediction, and uses robust regression, neural networks and SVM to predict the quality of coke, during which SVM uses libsvm toolbox, ε-SVR algorithm, kernel function using radial basis integrable functions, take insensitive loss function ε = 0.01, penalty factor C = 10, and others using the default settings. 1/7 of the 99 sample concentration is used as the test set, the rest 6/7 as the training set.
Coke mechanical strength, thermal properties are related to the degree of metamorphism.
If volatile and caking index (G or Y) are used to predict the mechanical strength of coke, two mixed coals with same volatile matters and same adhesion coke with same kinds of coal respectively, the quality of the resulting coke will have big difference.
The method also excludes bond index which greatly affects the mechanical strength of coke, sometimes resulting in low predictor accuracy, prediction accuracy will be affected greatly when the coal source changes, greatly reducing forecast accuracy of the coke quality indicators.
Case Study This study uses the foreground program, extracts 99 effective coal blending programs of experimental coke oven from database, in order to compare the accuracy of the prediction, and uses robust regression, neural networks and SVM to predict the quality of coke, during which SVM uses libsvm toolbox, ε-SVR algorithm, kernel function using radial basis integrable functions, take insensitive loss function ε = 0.01, penalty factor C = 10, and others using the default settings. 1/7 of the 99 sample concentration is used as the test set, the rest 6/7 as the training set.
Online since: December 2025
Authors: Omonigho B. Otanocha, Stanley Ufuoma Idi, Silas Oseme Okuma, Benjamin Ufuoma Oreko
Through analysis of these parameters, the researchers provided valuable insights into the key factors governing atomization performance and powder quality.
These include mechanical properties, thermal characteristics, chemical compatibility, electrical properties, cost-effectiveness, and material availability.
The material selected for the chamber is AISI 1010 mild steel, with its mechanical properties listed in Table 2.
Key Material Properties used in the FEA Study.
Yuan, Effect of aging treatment on the microstructure and mechanical properties of Al-3.02Mg-0.2Sc-0.1Zr alloy printed by selective laser melting, Mater.
These include mechanical properties, thermal characteristics, chemical compatibility, electrical properties, cost-effectiveness, and material availability.
The material selected for the chamber is AISI 1010 mild steel, with its mechanical properties listed in Table 2.
Key Material Properties used in the FEA Study.
Yuan, Effect of aging treatment on the microstructure and mechanical properties of Al-3.02Mg-0.2Sc-0.1Zr alloy printed by selective laser melting, Mater.
Online since: April 2021
Authors: Andrei Aleksandrovich Vorotnikov, Semyon Viktorovich Bushuev, Elena Alekseevna Melnichenko, Yuri Viktorovich Poduraev, Ilya Aleksandrovich Frolov
Many factors affect the braking characteristics of the magnetorheological disc brake.
This type of fluids can change their viscoelastic properties under the influence of external magnetic fields and refers to so-called semi-active “smart” materials.
This will affect the domain structures organization process in the braking chamber.
This is a negative factor that leads to the loss of useful energy of the magnetic field.
Further research is planned to investigate the properties of different materials in the brake chamber, as well as to improve the existing design of the braking device.
This type of fluids can change their viscoelastic properties under the influence of external magnetic fields and refers to so-called semi-active “smart” materials.
This will affect the domain structures organization process in the braking chamber.
This is a negative factor that leads to the loss of useful energy of the magnetic field.
Further research is planned to investigate the properties of different materials in the brake chamber, as well as to improve the existing design of the braking device.