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Online since: March 2012
Authors: Anish Kumar, Vinod Kumar, Jatinder Kumar
High strength, low density, and excellent corrosion resistance are the main properties that make titanium attractive for a variety of applications.
Non-aerospace applications take advantage mainly of their excellent strength properties or corrosion resistance [1] to [3].
The machinability of titanium and its alloys is generally to be poor owing to several inherent properties of the materials.
Table. 1 show the chemical composition of the pure titanium (grade-2) used for the experimentation; and also shows the mechanical properties of pure titanium (grade-2).
[9] F.H.Froes,T.L.Yau,H.G.Weidinger, Structure and Properties of Nonferrous Alloys, Chapter 8, Titanium, Zirconium, and Hafnium.
Non-aerospace applications take advantage mainly of their excellent strength properties or corrosion resistance [1] to [3].
The machinability of titanium and its alloys is generally to be poor owing to several inherent properties of the materials.
Table. 1 show the chemical composition of the pure titanium (grade-2) used for the experimentation; and also shows the mechanical properties of pure titanium (grade-2).
[9] F.H.Froes,T.L.Yau,H.G.Weidinger, Structure and Properties of Nonferrous Alloys, Chapter 8, Titanium, Zirconium, and Hafnium.
Online since: June 2017
Authors: Nirun Witit-Anun, Adisorn Buranawong
In this work, the films properties were characterized by XRD, FE-SEM and EDX techniques.
The surface morphology of CrN thin films did not affected from base pressure.
The coatings in term of thin film have been widely interested due to remarkable nanomaterial properties.
Joshi, Factors influencing properties of CrN thin films grown by cylindrical cathodic arc physical vapor deposition on HSS substrates, Mater.
Li, Effect of N2 flow rate on structure and mechanical properties of CrN coating prepared by closed field unbalance magnetron sputtering, Key.
The surface morphology of CrN thin films did not affected from base pressure.
The coatings in term of thin film have been widely interested due to remarkable nanomaterial properties.
Joshi, Factors influencing properties of CrN thin films grown by cylindrical cathodic arc physical vapor deposition on HSS substrates, Mater.
Li, Effect of N2 flow rate on structure and mechanical properties of CrN coating prepared by closed field unbalance magnetron sputtering, Key.
Online since: October 2007
Authors: Chao Ying Xie, Hong Jiang
One of the factors that affect grain refinement in ECAE is the temperature of the billet in which
deformation and recrystallization take place [2].
The coupling between the heat transfer problem and the mechanical problem was due to the temperature-dependent material properties and the internal heat generated.
The thermophysical properties of CP-Ti and H13 at four different pressing temperatures are listed in Table 1.
emissivity of 0.63.The thermophysical properties of CP-Ti used in the simulations are listed in table1.
The thermophysical properties of CP-Ti used in the simulations Temperature Thermal expansion Specific heat Thermal conductivity (°C) (10-6°C-1) (J/kg.
The coupling between the heat transfer problem and the mechanical problem was due to the temperature-dependent material properties and the internal heat generated.
The thermophysical properties of CP-Ti and H13 at four different pressing temperatures are listed in Table 1.
emissivity of 0.63.The thermophysical properties of CP-Ti used in the simulations are listed in table1.
The thermophysical properties of CP-Ti used in the simulations Temperature Thermal expansion Specific heat Thermal conductivity (°C) (10-6°C-1) (J/kg.
Online since: September 2015
Authors: Bo Wun Huang, Jung Ge Tseng, Chien Hua Chang
A diagram of this micro-mechanical piezoelectric pump is In this figure, a thin film, like as the cantilever mechanism, to drive the inlet and outlet valves, and its stability and dynamic characteristics affect the fluid flow accuracy.
So to understand the micro pump actuation mechanism and exclude the actuation of the adverse factors, to increase the fluid current accuracy of control and precision density, and the other by understanding, of the future of energy design a decrease unstable phenomena institutions to serve the material and reduce processing costs, improve the overall Precision machining technology is this study aim.
An experimental analysis is also used to identify the dynamic properties accuracy.
By using the finite element analysis software ANSYS Workbench, the natural properties, dynamic characteristics of a micro pump can be studied.
(2) The finite element method can be employed to study the natural properties of a micro pump.
So to understand the micro pump actuation mechanism and exclude the actuation of the adverse factors, to increase the fluid current accuracy of control and precision density, and the other by understanding, of the future of energy design a decrease unstable phenomena institutions to serve the material and reduce processing costs, improve the overall Precision machining technology is this study aim.
An experimental analysis is also used to identify the dynamic properties accuracy.
By using the finite element analysis software ANSYS Workbench, the natural properties, dynamic characteristics of a micro pump can be studied.
(2) The finite element method can be employed to study the natural properties of a micro pump.
Online since: July 2017
Authors: L. Poovazhagan, S. Srinath Ramkumar, S. Vignesh Kumar, R. Ashok
The most effective machining strategy is determined by identifying the different factors affecting the WEDM process, and seeking the different methods for obtaining the optimal machining condition and performance [1].
The important properties of the matrix and reinforcements are shown in table1.
For experimentation, Taguchi’s orthogonal array was used with four factors.
The factors considered for the experimentation are current, Pulse-ON, Pulse-OFF, and Servo voltage.
The Servo voltage is the most important parameter to affect the MRR which is followed by Pulse off time.
The important properties of the matrix and reinforcements are shown in table1.
For experimentation, Taguchi’s orthogonal array was used with four factors.
The factors considered for the experimentation are current, Pulse-ON, Pulse-OFF, and Servo voltage.
The Servo voltage is the most important parameter to affect the MRR which is followed by Pulse off time.
Online since: August 2011
Authors: Jun Gao, Shu Xia Lin, Jian Hong Gong
School of Mechanical, Electrical & Information Engineering of Shandong University at weihai,Weihai, 264209
2.
Introduction The boron is an important impurity that may affect the hardness, strength, optical absorption and other physical properties of diamonds [1-4].
This means different boron content in the catalyst is an important factor that affects the oxidation resistance of diamond differently.
It is the boron compounds included in the diamond crystals that affect the thermal stability of synthetic diamonds.
,Vohra, Mechanical properties of boron doped diamond films prepared by MPCVD, Materials Research Society Symposium - Proceedings, Mechanical Properties of Nanostructured Materials and Nonocomposites, v 791 (2003): pp.265-270 [7] Barnes, R.
Introduction The boron is an important impurity that may affect the hardness, strength, optical absorption and other physical properties of diamonds [1-4].
This means different boron content in the catalyst is an important factor that affects the oxidation resistance of diamond differently.
It is the boron compounds included in the diamond crystals that affect the thermal stability of synthetic diamonds.
,Vohra, Mechanical properties of boron doped diamond films prepared by MPCVD, Materials Research Society Symposium - Proceedings, Mechanical Properties of Nanostructured Materials and Nonocomposites, v 791 (2003): pp.265-270 [7] Barnes, R.
Online since: October 2010
Authors: Hubertus Kieslich, Klaus Holschemacher
The load bearing capacity of the composite construction is
primarily affected by the material properties of the timber beam and the concrete slab.
These building materials are called high performance concerning their fresh concrete properties as well as their hardened concrete properties.
Two main factors are important in this case.
It often requires several different properties of the used concrete.
The used PVA-Fibers are shown in Table 1 and the geometrical and mechanical properties are pointed out.
These building materials are called high performance concerning their fresh concrete properties as well as their hardened concrete properties.
Two main factors are important in this case.
It often requires several different properties of the used concrete.
The used PVA-Fibers are shown in Table 1 and the geometrical and mechanical properties are pointed out.
Online since: December 2018
Authors: Sylvie Castagne, Surendra Sujakhu
The main characteristics of these materials lie in the graphite particles inclusions whose morphology and count greatly influence the mechanical properties and more specifically the fatigue crack initiation and propagation behaviour of the SGI components.
These unique properties of SGI are attributed to the nodular graphite form, which helps to minimize the stress intensification effect around the graphite nodules and improves the mechanical and fatigue properties of the material [1, 2].
With superior mechanical and fatigue properties, SGIs are undoubtedly better when considering fracture and fatigue.
The sample material was cast in the form of a 50 mm thick cast plate, and had the mechanical properties of Young’s modulus E = 170 GPa, yield stress σy = 410 MPa, ultimate tensile strength UTS = 510 MPa and elongation = 17 %.
It seemed that the interface strength was not affected during the initial 16 thermal cycles.
These unique properties of SGI are attributed to the nodular graphite form, which helps to minimize the stress intensification effect around the graphite nodules and improves the mechanical and fatigue properties of the material [1, 2].
With superior mechanical and fatigue properties, SGIs are undoubtedly better when considering fracture and fatigue.
The sample material was cast in the form of a 50 mm thick cast plate, and had the mechanical properties of Young’s modulus E = 170 GPa, yield stress σy = 410 MPa, ultimate tensile strength UTS = 510 MPa and elongation = 17 %.
It seemed that the interface strength was not affected during the initial 16 thermal cycles.
The Research of Industrial Brake Temperature Measurement Based on Nano-Materials and Nano-Technology
Online since: April 2014
Authors: Quan Wei Wang, Xiao Mei Chen, Hao Wen, Dong Yao Geng, Yan Ting Chen
Relevant statistics show that the hoisting machinery accidents caused by unserviceable brake accounts for about 20% of the total, and the braking temperature is one of the main influence factors.
(3) The design of the temperature measuring points is affected by many factors.
Theoretically, these schemes, which have high precision, good dynamic characteristics and wide range, are suitable to measure the temperature and temperature field’s change properties of moving object.
Compared with nonmetal, these factors have more effect on mental, which make a big difference when mental has different surface state.
Develop new thermoelectric conversion nano-materials, which have such properties of constant friction coefficient, good wear resistance, high thermal energy conversion performance, high temperature resistance, etc, to apply in temperature sensor.
(3) The design of the temperature measuring points is affected by many factors.
Theoretically, these schemes, which have high precision, good dynamic characteristics and wide range, are suitable to measure the temperature and temperature field’s change properties of moving object.
Compared with nonmetal, these factors have more effect on mental, which make a big difference when mental has different surface state.
Develop new thermoelectric conversion nano-materials, which have such properties of constant friction coefficient, good wear resistance, high thermal energy conversion performance, high temperature resistance, etc, to apply in temperature sensor.
Online since: February 2011
Authors: Xiu Mei Yang, Jie Chen
The performance of the synchronizing ring directly affects the reliability and safety of the transmission system[1].
The theoretical foundation for the rigid visco-plastic property finite element is the Markov variational principle.
The shear model is used to act as the friction boundary condition, namely, (14) In the formula: is the shear friction factor and is supposed 0.3; k is the shear yield strength.
However, precision forging process of synchronizer ring is high temperature and large deformation, there is heat transfer on billet-die interface, simultaneously plastic work and frictional work turn to heat, all these factors make temperature filed of billet continually change, the change of temperature field will affect deformation behavior of billet, furthermore affect the mechanical capability and microstructure of synchronizer ring.
Hu: China Mechanical Engineering.
The theoretical foundation for the rigid visco-plastic property finite element is the Markov variational principle.
The shear model is used to act as the friction boundary condition, namely, (14) In the formula: is the shear friction factor and is supposed 0.3; k is the shear yield strength.
However, precision forging process of synchronizer ring is high temperature and large deformation, there is heat transfer on billet-die interface, simultaneously plastic work and frictional work turn to heat, all these factors make temperature filed of billet continually change, the change of temperature field will affect deformation behavior of billet, furthermore affect the mechanical capability and microstructure of synchronizer ring.
Hu: China Mechanical Engineering.