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Online since: October 2008
Authors: Luis Maria Esquivias Fedriani, Nicolás de la Rosa-Fox, Victor Morales-Flórez, Manuel Piñero
The
mechanical properties are dependent on the organic content and rubber-like elasticity can replace
brittleness [6].
The Cluster Model that is introduced here has also been applied as an initial approach to the study of mechanical properties [68].
The stronger nature of the covalent bond gives considerable improvement of the mechanical properties of the composites.
"An introduction to the mechanical properties of solid polymers"
[125] Piñero, M., Morales-Flórez, V., de la Rosa-Fox, N. and Esquivias, L., Mechanical properties of hybrid aerogels, Bol.
The Cluster Model that is introduced here has also been applied as an initial approach to the study of mechanical properties [68].
The stronger nature of the covalent bond gives considerable improvement of the mechanical properties of the composites.
"An introduction to the mechanical properties of solid polymers"
[125] Piñero, M., Morales-Flórez, V., de la Rosa-Fox, N. and Esquivias, L., Mechanical properties of hybrid aerogels, Bol.
Online since: June 2015
Authors: Keh Moh Lin, Ching Tsun Hsieh, Yang Hsien Lee, Chih Kai Hsu, Wen Yeong Huang
Spectroscopic Ellipsometry Study on Strain Evolution of Transparent Conductive Thin Films Prepared by RF Sputtering Method
Keh-moh Lin1,a, Yang-Hsien Lee1, Wen-Yeong Huang1,
Ching-Tsun Hsieh1,Chih-kai Hsu1
1Department of Mechanical Engineering, Southern Taiwan University of Science and Technology, Tainan, Taiwan R.O.C.
aE-mail: kemo@mail.stust.edu.tw Keywords: Residual stress; ellipsometry; optical properties; transparent conductive oxide; Abstract.
Moreover, it is known that residual stress in TCO films affects their mechanical properties and reliability [3].
A Simple-Grade model and a Surface Roughness model were adopted to reflect the physical properties of the films.
The factor 0.5 comes from 50 vol% of voids assumed in the SE analysis [5].
aE-mail: kemo@mail.stust.edu.tw Keywords: Residual stress; ellipsometry; optical properties; transparent conductive oxide; Abstract.
Moreover, it is known that residual stress in TCO films affects their mechanical properties and reliability [3].
A Simple-Grade model and a Surface Roughness model were adopted to reflect the physical properties of the films.
The factor 0.5 comes from 50 vol% of voids assumed in the SE analysis [5].
Online since: July 2025
Authors: Safira Vanisa, Selma Wulandari, Nuryono Nuryono, Bambang Rusdiarso
However, no research has been conducted on the mechanical and antibacterial properties of MTA modified with the addition of CuONP.
The MTA/CuO mechanical properties test results can be seen in Table 4.
Adding 1.5% AgNP and 0.5% TiO2 is an optimum filler to increase MTA's maximal mechanical properties.
However, when the concentration of CuONP was increased to 3%, their mechanical properties reached a tipping point, and compressive strength decreased.
Riahi, Effects of CuO Nanoparticles on Microstructure, Physical, Mechanical and Thermal Properties of Self-Compacting Cementitious Composites, J..
The MTA/CuO mechanical properties test results can be seen in Table 4.
Adding 1.5% AgNP and 0.5% TiO2 is an optimum filler to increase MTA's maximal mechanical properties.
However, when the concentration of CuONP was increased to 3%, their mechanical properties reached a tipping point, and compressive strength decreased.
Riahi, Effects of CuO Nanoparticles on Microstructure, Physical, Mechanical and Thermal Properties of Self-Compacting Cementitious Composites, J..
Online since: June 2017
Authors: A.G. Barbosa de Lima, R.Q. da Costa Melo, C.J. Silva, T.H.F. de Andrade, E. Gomes da Silva
One of majors problems associated with polymeric composites reinforced with vegetable fibers is the presence of moisture inside them,which often weakens the fiber-matrix interface interaction affecting its mechanical properties,which can accelerate aging.
Since that water strongly affect mechanical properties of these composites, with particular reference to caroá fiber reinforced composites.
R.Nutt Influence of hygrothermal environment on thermal and mechanical properties of carbon fiber/fiber glass hybrid composites.
Verdu, Factors governing water absorption by composite matrices.
Czigány, A study of water absorption and mechanical properties of glass fiber/polyester composite pipes – Effects of specimen geometry and preparation.
Since that water strongly affect mechanical properties of these composites, with particular reference to caroá fiber reinforced composites.
R.Nutt Influence of hygrothermal environment on thermal and mechanical properties of carbon fiber/fiber glass hybrid composites.
Verdu, Factors governing water absorption by composite matrices.
Czigány, A study of water absorption and mechanical properties of glass fiber/polyester composite pipes – Effects of specimen geometry and preparation.
Online since: November 2013
Authors: Adrian Sabau
The fuel injection system affects the diesel engine combustion process through the control of injection time, injection quantity and injection rate [2].
· The properties of the fuel were not measured, being used several sources from the technical literature [6].
This factor may cause errors of the calculated results.
· These variations affect the injected fuel quantity and the injection pipe pressure profile after the injection
SAE Paper 2003-01-0702 (2003) [6] Rodriguez-Anton, L.M., Casanova-Kindelan J., Tardajos, G., High-Pressure Physical Properties of Fluids used in Diesel Injection System, SAE, paper 2000-01-2046, (2003).
· The properties of the fuel were not measured, being used several sources from the technical literature [6].
This factor may cause errors of the calculated results.
· These variations affect the injected fuel quantity and the injection pipe pressure profile after the injection
SAE Paper 2003-01-0702 (2003) [6] Rodriguez-Anton, L.M., Casanova-Kindelan J., Tardajos, G., High-Pressure Physical Properties of Fluids used in Diesel Injection System, SAE, paper 2000-01-2046, (2003).
Online since: April 2005
Authors: Pavel Lejček, Vendula Havlová
Introduction
Mechanical properties of materials depend on parameters such as their thermal treatment, type and
concentration of solutes and impurities, presence of secondary particles and their size and
dispersion, and grain structure including their texture, grain size, grain boundary orientation and
topology.
In intergranular brittle fracture representing a very important reduction of the strength, it is necessary to consider anisotropy of interfacial properties.
It is generally accepted that high-angle grain boundaries are classified as (i) high energy general grain boundaries with an easy tendency to intergranular fracture, (ii) low energy singular (special) grain boundaries with the properties close to those of the bulk, and (iii) transitive vicinal grain boundaries [1].
Based on this consideration, the Grain Boundary Engineering concept was proposed to produce materials with optimum properties by controlling the grain boundary character and distribution in their structure [2].
The grain boundary migration is then affected by this interaction as is reflected by changing the value of n in Eq. (2) and another mechanism of grain boundary migration should be considered.
In intergranular brittle fracture representing a very important reduction of the strength, it is necessary to consider anisotropy of interfacial properties.
It is generally accepted that high-angle grain boundaries are classified as (i) high energy general grain boundaries with an easy tendency to intergranular fracture, (ii) low energy singular (special) grain boundaries with the properties close to those of the bulk, and (iii) transitive vicinal grain boundaries [1].
Based on this consideration, the Grain Boundary Engineering concept was proposed to produce materials with optimum properties by controlling the grain boundary character and distribution in their structure [2].
The grain boundary migration is then affected by this interaction as is reflected by changing the value of n in Eq. (2) and another mechanism of grain boundary migration should be considered.
Online since: January 2016
Authors: Azwan Iskandar Azmi, Chye Lih Tan, W.M.M. Irina, M.N.M. Radzi, Gou Zhou Keh, K.W. Leong
Introduction
Composite materials consist of two or more phases that are processed separately and then bonded together to achieve superior mechanical properties.
The selection was based on the three factors and at three levels specified in Table 1.
In term of ranking, the drill bit is in the first position among the other two factors.
Hence, this directly implies that the drill bit is the most significant parameter that affects delamination.
With regard to the spindle speed and feed rate, both of these factors should be kept at lowest level in order to minimise the delamination factor.
The selection was based on the three factors and at three levels specified in Table 1.
In term of ranking, the drill bit is in the first position among the other two factors.
Hence, this directly implies that the drill bit is the most significant parameter that affects delamination.
With regard to the spindle speed and feed rate, both of these factors should be kept at lowest level in order to minimise the delamination factor.
Online since: September 2013
Authors: Ivo Černý
Measurement was performed not only in the region of stable crack growth, but also in the threshold region enabling to estimate threshold values of stress intensity factor range using method of regression analyses.
Typical mechanical properties of the Al 2124 alloy are as follows: Strength 483 MPa, proof stress 441 MPa, hardness HV 146, fatigue strength 125 MPa, Fracture toughness in L-T 32 MPa×m1/2.
Mechanical high-cycle fatigue machine SCHENCK PHG was used, test frequency 40 Hz.
This behaviour cannot be easily explained without an evaluation of crack closure, which is likely a very important factor.
Such local microstructure irregularities affect FCG characteristics particularly in case of small specimens with rather low width, which was this case (W = 30 mm).
Typical mechanical properties of the Al 2124 alloy are as follows: Strength 483 MPa, proof stress 441 MPa, hardness HV 146, fatigue strength 125 MPa, Fracture toughness in L-T 32 MPa×m1/2.
Mechanical high-cycle fatigue machine SCHENCK PHG was used, test frequency 40 Hz.
This behaviour cannot be easily explained without an evaluation of crack closure, which is likely a very important factor.
Such local microstructure irregularities affect FCG characteristics particularly in case of small specimens with rather low width, which was this case (W = 30 mm).
Online since: October 2013
Authors: Wen Li Li, Xin Shuo Sun, Tie Jun Xu, Zhi Li Sui, Zhao Guang Li
It is the key to ensure the safety of power transmission tower, people life and property.
The public facilities and people's life and property pose a serious hazard [1, 2].
Influenced by mining, uneven settlement of the building consists of two parts: one part is settlement of the building with the subsidence of the surface integrally, which depends on the mining technology, mineral occurrence conditions and factors such as surface geological conditions; the other part is due to the foundation soil disturbance, compressibility changes, thus in the process of surface integral sinks, foundation and ground relative subsidence.
So if mined-out area appears at the bottom of the tower foundation, it is likely to affect transmission tower, even damage, this is very dangerous.
As far as possible avoiding influence within the scope of 6m from the building foundations, it is a key to ensure the power transmission tower safe, and people life and property from loss.
The public facilities and people's life and property pose a serious hazard [1, 2].
Influenced by mining, uneven settlement of the building consists of two parts: one part is settlement of the building with the subsidence of the surface integrally, which depends on the mining technology, mineral occurrence conditions and factors such as surface geological conditions; the other part is due to the foundation soil disturbance, compressibility changes, thus in the process of surface integral sinks, foundation and ground relative subsidence.
So if mined-out area appears at the bottom of the tower foundation, it is likely to affect transmission tower, even damage, this is very dangerous.
As far as possible avoiding influence within the scope of 6m from the building foundations, it is a key to ensure the power transmission tower safe, and people life and property from loss.
Online since: July 2020
Authors: Wisnu Ari Adi, Yunasfi Yunasfi, Engkir Sukirman, A. Insani
The refined values of the atomic occupation factors (gj) of the NiCexFe2-xO4 are listed in Table 3.
The refinement results of atomic occupation factors (gj) and fractional coordinate of the NiCexFe2-xO4 unit cell.
Sheilding Properties of CuNiZn Ferrite in the Radio Frequency Range.
Magnetic Properties and Microwave Absorption in Ni-Zn and Mn-Zn Ferrite Nonoparticles Synthesized by Low-Temperature Solid-State Reaction.
Agrawal, Effect of Ce Doping on the Magnetic Properties of NiFe2O4 Nanoparticles, J.
The refinement results of atomic occupation factors (gj) and fractional coordinate of the NiCexFe2-xO4 unit cell.
Sheilding Properties of CuNiZn Ferrite in the Radio Frequency Range.
Magnetic Properties and Microwave Absorption in Ni-Zn and Mn-Zn Ferrite Nonoparticles Synthesized by Low-Temperature Solid-State Reaction.
Agrawal, Effect of Ce Doping on the Magnetic Properties of NiFe2O4 Nanoparticles, J.