Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: February 2008
Authors: Wing Yiu Yeung, Richard Wuhrer, Greg Heness, J. Qin, W. Lu, D. Zhang, Jonathon Mak
Introduction
In the past decades, there has been a growing interest in high performance engineering and
industrial applications of metal matrix composites (MMCs), because of their advanced mechanical
properties.
Titanium and its alloys have been known as the ideal matrix for developing advanced metal matrix composites for aerospace applications because of their superior elevated temperature properties [1].
The results will be later correlated with the mechanical properties, as determined by the small punch testing of the Ti metal matrix composites.
The small punch tests apply a small volume of material of 10 mm diameter and 0.5 mm thickness, in determining its mechanical properties.
The results of the small punch tests are expected to be greatly affected by the morphology and distribution of the reinforcement phases.
Titanium and its alloys have been known as the ideal matrix for developing advanced metal matrix composites for aerospace applications because of their superior elevated temperature properties [1].
The results will be later correlated with the mechanical properties, as determined by the small punch testing of the Ti metal matrix composites.
The small punch tests apply a small volume of material of 10 mm diameter and 0.5 mm thickness, in determining its mechanical properties.
The results of the small punch tests are expected to be greatly affected by the morphology and distribution of the reinforcement phases.
Online since: December 2012
Authors: Ai Ping Zhang, Sheng Qiang Lin
Oil film properties of three oil wedge sliding bearing
and its effect to the rotor stability
ZHANG Ai Pinga, LIN Sheng Qiangb
Northeast Dianli University , China
azap@mail.nedu.edu.cn, blsqiang007@126.com,
Keywords: Three oil wedge,sliding bearing, rotor stability,oil film properties,CFD
Abstract.
After learning three oil wedge oil film properties, it will be more meaningful to study three oil wedge bearing stability witch are effected on the other factors.
By calculating the navier-stokes equations to study oil film pressure characteristics witch can be effective to consider these factors that will be ignored by using Reynolds equation.
Oil is sticky fluid witch has rotating properties so that can't be neglected the eddy current and turbulence.
Only reasonable mesh can do guarantee the simulation result is close to the real oil film properties.
After learning three oil wedge oil film properties, it will be more meaningful to study three oil wedge bearing stability witch are effected on the other factors.
By calculating the navier-stokes equations to study oil film pressure characteristics witch can be effective to consider these factors that will be ignored by using Reynolds equation.
Oil is sticky fluid witch has rotating properties so that can't be neglected the eddy current and turbulence.
Only reasonable mesh can do guarantee the simulation result is close to the real oil film properties.
Online since: August 2014
Authors: Tao Jiang, Jian Li, Xue Mei Wen, Wei Zhang, Yu Ping Chen, Ying Xiao, Chen Xue Xiong, Wei Zhu
Among the myriad factors that ultimately influence the global properties of epoxy/silica composites, filler dispersion and interfacial interactions are the most crucial ones affecting the mechanical properties of the composites [3].
This special polydopamine modified silica reinforced composite should possess good mechanical properties due to the strong interface adhesion which allowed the stress to transfer across matrix and the thorns.
This suggested that the polydopamine layer play an important role in improving mechanical properties of the composites by strengthening filler-matrix adhesion.
Yanumet, The adsorption of cationic surfactants on BN surface: Its effects on the thermal conductivity and mechanical properties of BN-epoxy composite, Colloids and Surfaces A: Physicochem.
Miao, Improved dielectric and mechanical properties of silica/epoxy resin nanocomposites prepared with a novel organic-inorganic hybrid mesoporous silica: POSS-MPS, Mater.
This special polydopamine modified silica reinforced composite should possess good mechanical properties due to the strong interface adhesion which allowed the stress to transfer across matrix and the thorns.
This suggested that the polydopamine layer play an important role in improving mechanical properties of the composites by strengthening filler-matrix adhesion.
Yanumet, The adsorption of cationic surfactants on BN surface: Its effects on the thermal conductivity and mechanical properties of BN-epoxy composite, Colloids and Surfaces A: Physicochem.
Miao, Improved dielectric and mechanical properties of silica/epoxy resin nanocomposites prepared with a novel organic-inorganic hybrid mesoporous silica: POSS-MPS, Mater.
Online since: May 2011
Authors: Ke Ke Peng
After main influence factors of structure failure are analyzed by analytic hierarchy process and fuzzy clustering analytical method, it’s necessary to quantitatively analyse the importance of these factors’ influence on reliability furtherly.
The first, as to one certain output variable, which are the most important input variables affecting output result.
Therefore, in order to study effects of all the factors on structural failure, it’s enough to study the effects of mean and mean square deviation [7] .
In order to study the influence of these indefinite factors on reliability indices, it’s necessary to combined the finite element method with ansys PDS technique.
The conclusion is identical with mechanical properties, and the result of the sensitivity pie chart is in accordance with analytic hierarchy process, which verify the accuracy of the above method.
The first, as to one certain output variable, which are the most important input variables affecting output result.
Therefore, in order to study effects of all the factors on structural failure, it’s enough to study the effects of mean and mean square deviation [7] .
In order to study the influence of these indefinite factors on reliability indices, it’s necessary to combined the finite element method with ansys PDS technique.
The conclusion is identical with mechanical properties, and the result of the sensitivity pie chart is in accordance with analytic hierarchy process, which verify the accuracy of the above method.
Online since: November 2011
Authors: N. Ismail, Ali Sayyah, Moones Sayyah, Baharudin Btht, Mehrdad Nikbakht
However based on oil analysis data, the identification of engine problem is very hard due to different contribution factors.
Although nowadays machinery oil analysis Condition Monitoring (CM) techniques are known as effective methods for monitoring abnormal wear in equipment and mechanical systems, factors such as issues like wear behavior, technical features, and previous records and event data of oil analysis results are also essential for interpreting the results of oil analysis [3].
In this situation undoubtedly there is a major problem in mechanical parts.
Additives are chemical materials which impart new properties lubricants.
Additives enhance the existing properties of the lubricant into which they are incorporated.
Although nowadays machinery oil analysis Condition Monitoring (CM) techniques are known as effective methods for monitoring abnormal wear in equipment and mechanical systems, factors such as issues like wear behavior, technical features, and previous records and event data of oil analysis results are also essential for interpreting the results of oil analysis [3].
In this situation undoubtedly there is a major problem in mechanical parts.
Additives are chemical materials which impart new properties lubricants.
Additives enhance the existing properties of the lubricant into which they are incorporated.
Online since: January 2025
Authors: Muhammad Amir, Majid Ali
A structure's ductility is influenced by a variety of factors, such as its shape, connections, composition, and structural components.
Governing Concrete Properties to Cause Shear Cracks The concrete characteristics of these structural components significantly influence their behavior, and several key factors contribute to their main defects.
Additionally, it has been observed that the fracture properties of concrete further improve when steel fibers are aligned [19].
The mechanical and physical properties of different fibers are displayed in table 1.
A review on fracture properties of steel fiber
Governing Concrete Properties to Cause Shear Cracks The concrete characteristics of these structural components significantly influence their behavior, and several key factors contribute to their main defects.
Additionally, it has been observed that the fracture properties of concrete further improve when steel fibers are aligned [19].
The mechanical and physical properties of different fibers are displayed in table 1.
A review on fracture properties of steel fiber
Online since: September 2020
Authors: Ahmad Zahirani Ahmad Azhar, Hanisah Manshor, Nik Akmar Rejab, Afifah Ali, Hanani Hani Mohd. Khairy, Nur Khairunnisa Mohd. Zaki, Raqibah Najwa Mudzaffar
The smaller MgO particle sizes has better mechanical properties for the cutting tools [2].
The properties of the cutting tool, for instance, ZMN cutting tool is harder than ZMM cutting tool, is one of the factors that influenced the wear value to be lowered.
The factors such as micro-structural features, densities and hardness are important properties that greatly influence the wear performance of ZTA-MgO cutting inserts [2].
The factors such and microstructural features, densities and hardness of the cutting tool improve the mechanical and wear performance [2].
Effect of MgO particle size on the microstructure, mechanical properties and wear performance of ZTA–MgO ceramic cutting inserts, Int.
The properties of the cutting tool, for instance, ZMN cutting tool is harder than ZMM cutting tool, is one of the factors that influenced the wear value to be lowered.
The factors such as micro-structural features, densities and hardness are important properties that greatly influence the wear performance of ZTA-MgO cutting inserts [2].
The factors such and microstructural features, densities and hardness of the cutting tool improve the mechanical and wear performance [2].
Effect of MgO particle size on the microstructure, mechanical properties and wear performance of ZTA–MgO ceramic cutting inserts, Int.
Online since: September 2014
Authors: Esther Titilayo Akinlabi, Stephen Akinlabi
A set of experiments was performed to produce different curvatures from the laser beam formed steel sample using an L-27 Taguchi array with five factors and three levels.
The factors and three corresponding levels are presented in Table 1.
Microstructure and properties of thin wall by laser cladding forming.
Effect of Laser Forming on Microstructure and Mechanical Properties of AISI 1008 Steel.
Laser Forming of 3 mm Steel Plate and the Evolving Properties.
The factors and three corresponding levels are presented in Table 1.
Microstructure and properties of thin wall by laser cladding forming.
Effect of Laser Forming on Microstructure and Mechanical Properties of AISI 1008 Steel.
Laser Forming of 3 mm Steel Plate and the Evolving Properties.
Online since: November 2023
Authors: Vojtěch Václavík, Tomáš Dvorský, Jan Foltýn, Jiří Šafrata
Recipe 2 based on natural aggregate, which also served as the comparison recipe to demonstrate the effect of recycled concrete fr. 0/16 mm on the physical-mechanical and deformation properties of concrete.
The properties of fresh and hardened concrete were tested to determine how the physical-mechanical and deformation properties of concrete are affected when concrete recyclate is used. 2 Materials and Methods 2.1 Concrete recyclate Concrete recyclate fr. 0/16 mm was prepared from construction and demolition waste for the research tasks by Tomáš STRAUB s.r.o.
High Performance Concrete with Electric Arc Furnace Slag as Aggregate: Mechanical and Durability Properties.
Effect of Fly Ash Particle Size on Thermal and Mechanical Properties of Fly Ash-Cement Composites.
[22] EN 1097-6 Tests for Mechanical and Physical Properties of Aggregates - Part 6: Determination of Particle Density and Water Absorption. 2014
The properties of fresh and hardened concrete were tested to determine how the physical-mechanical and deformation properties of concrete are affected when concrete recyclate is used. 2 Materials and Methods 2.1 Concrete recyclate Concrete recyclate fr. 0/16 mm was prepared from construction and demolition waste for the research tasks by Tomáš STRAUB s.r.o.
High Performance Concrete with Electric Arc Furnace Slag as Aggregate: Mechanical and Durability Properties.
Effect of Fly Ash Particle Size on Thermal and Mechanical Properties of Fly Ash-Cement Composites.
[22] EN 1097-6 Tests for Mechanical and Physical Properties of Aggregates - Part 6: Determination of Particle Density and Water Absorption. 2014
Online since: April 2011
Authors: Chong Wang, Yan Sheng Jiand
The thermal-mechanical properties of refractory are influenced by various factors, such as the intrinsic mechanical properties of the matrix material and second phase, porosity and mean size of pores etc.
Table 1 lists the thermal-mechanical property parameters.
Thermal-mechanical property parameters of mullite (3Al2O3.2SiO2) [7]: ρ - density, E – elasticity modulus, ν – Poisson’s ratio, α - thermal expansion coefficient [6], h - convection coefficient between air and the sample [10], T – temperature, σt – tensile strength, Cp – specific heat [7], k – thermal conductivity [8].
By Eq. (2) we know that the damage index D also stands for the mechanical strength loss.
The remained strength is low affected by small pore size (0.5 mm £ d £ 2 mm).
Table 1 lists the thermal-mechanical property parameters.
Thermal-mechanical property parameters of mullite (3Al2O3.2SiO2) [7]: ρ - density, E – elasticity modulus, ν – Poisson’s ratio, α - thermal expansion coefficient [6], h - convection coefficient between air and the sample [10], T – temperature, σt – tensile strength, Cp – specific heat [7], k – thermal conductivity [8].
By Eq. (2) we know that the damage index D also stands for the mechanical strength loss.
The remained strength is low affected by small pore size (0.5 mm £ d £ 2 mm).