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Online since: June 2012
Authors: Jung Il Lee, Kyung Wook Jang, Sin Wook You, Soon Chul Ur, Il Ho Kim, Soon Mok Choi, Sun Uk Kim, Won Seon Seo
Electronic transport properties (Hall coefficient, carrier concentration and mobility) and thermoelectric properties (Seebeck coefficient, electrical conductivity, power factor, thermal conductivity and figure of merit) were examined.
Group BIII(Al, In) elements were more effective to enhance the thermoelectric properties of Mg2Si.
The thermoelectric and transport properties of doped Mg2Si were examined.
Table 1 lists the electronic transport properties of Mg2Si:BI-IIIm at room temperature.
Electronic transport properties of doped Mg2Si at room temperature.
Group BIII(Al, In) elements were more effective to enhance the thermoelectric properties of Mg2Si.
The thermoelectric and transport properties of doped Mg2Si were examined.
Table 1 lists the electronic transport properties of Mg2Si:BI-IIIm at room temperature.
Electronic transport properties of doped Mg2Si at room temperature.
Online since: August 2010
Authors: Ahmad Alawar, Khalifa Al-Kaabi, Waseem Ahmed
Mechanical interlocking between untreated fibers and the matrix showed some increase
in the mechanical properties of the untreated DPF-PP compared to the treated one.
In both cases, composites having 75% PP has better mechanical properties than the 50%PP composites.
The properties of composites mainly depend on three factors that are matrix, fibers and their interfacial bonding.
DPF/PP composite appeared to have better mechanical properties.
Comparison of mechanical properties of untreated fiber Fig2.
In both cases, composites having 75% PP has better mechanical properties than the 50%PP composites.
The properties of composites mainly depend on three factors that are matrix, fibers and their interfacial bonding.
DPF/PP composite appeared to have better mechanical properties.
Comparison of mechanical properties of untreated fiber Fig2.
Online since: September 2011
Authors: De Shan Shan, Jun Dong, De Ping Chen, Ju Mei Zhao, Xin Yue Liu, Gang Liu
Twelve PVC tubed short concrete columns and four columns without PVC tube confined were tested under axial load to investigate mechanical properties of axially loaded PVC tubed short concrete columns .
The principal influencing factors such as concrete strength, loading condition and ratio of height to diameter were studied.
At present, there many the domestic and foreign researchs on mechanical properties of concrete-filled steel tubular column[1-2] and FRP tubed concrete column[3].
While experimental study on mechanical properties of axially load PVC tubed short concrete columns are scarce.
In this paper, to study on Mechanical Properties of Axially Loaded PVC Tubed Short Concrete Columns, fourparameters are examined, they are PVC casing strength of concrete, loading condition, with or without PVC tubed, ratio of height to diameter.
The principal influencing factors such as concrete strength, loading condition and ratio of height to diameter were studied.
At present, there many the domestic and foreign researchs on mechanical properties of concrete-filled steel tubular column[1-2] and FRP tubed concrete column[3].
While experimental study on mechanical properties of axially load PVC tubed short concrete columns are scarce.
In this paper, to study on Mechanical Properties of Axially Loaded PVC Tubed Short Concrete Columns, fourparameters are examined, they are PVC casing strength of concrete, loading condition, with or without PVC tubed, ratio of height to diameter.
Online since: May 2005
Authors: R.P. Garrett, J. Lin, Trevor A. Dean
The first is to investigate the effects of SHT proportions on the
mechanical properties of the material.
The second is the effects of quenching rates on the mechanical properties after SHT.
For this novel process it is necessary to test a number of factors of the process.
Above this value the changes in mechanical properties are small in respect to increase SHT time.
Both of these factors have a limit where no further clearance or pressure will affect the quench rate any further and thus the relationship forms an s-shaped curve with upper and lower saturation point.
The second is the effects of quenching rates on the mechanical properties after SHT.
For this novel process it is necessary to test a number of factors of the process.
Above this value the changes in mechanical properties are small in respect to increase SHT time.
Both of these factors have a limit where no further clearance or pressure will affect the quench rate any further and thus the relationship forms an s-shaped curve with upper and lower saturation point.
Online since: March 2016
Authors: Yuan Sheng Yang, Tao Zhang, Yun Teng Liu, Yang De Li, Wei Rong Li, Hong Min Jia, Xiaohui Feng
Based on the experimental results, the factors of improving the mechanical properties and corrosion resistance of the high-purity Mg as biodegradable material are briefly discussed.
The grain size and crystallographic texture should be considered to be the main influencing factors of corrosion rate of high-purity Mg in the NaCl solution [21,25].
Yang, The microstructures and mechanical properties of extruded high-purity magnesium, Mater.
Microstructure and mechanical properties of ultrafine grain ZK60 alloy processed by equal channel angular pressing, Mater.
Wang, Effects of grain size, texture and twinning on mechanical properties and work-hardening behaviors of pure Mg, Mater.
The grain size and crystallographic texture should be considered to be the main influencing factors of corrosion rate of high-purity Mg in the NaCl solution [21,25].
Yang, The microstructures and mechanical properties of extruded high-purity magnesium, Mater.
Microstructure and mechanical properties of ultrafine grain ZK60 alloy processed by equal channel angular pressing, Mater.
Wang, Effects of grain size, texture and twinning on mechanical properties and work-hardening behaviors of pure Mg, Mater.
Online since: August 2023
Authors: Adil El Azzouzi, Hamid Zaghar, Larbi Lasri, Nabil Moujibi
It was concluded that all considered factors were significant for a studied response.
The raster width and air gaps had been identified as important parameters in affecting the material porosity and mechanical strength [29].
Build orientation is found also among influential factors.
Each curve indicated the average values of the mechanical properties: stress and elongation.
Investigation of the mechanical properties and porosity relationships in fused deposition modelling-fabricated porous structures.
The raster width and air gaps had been identified as important parameters in affecting the material porosity and mechanical strength [29].
Build orientation is found also among influential factors.
Each curve indicated the average values of the mechanical properties: stress and elongation.
Investigation of the mechanical properties and porosity relationships in fused deposition modelling-fabricated porous structures.
Online since: May 2020
Authors: Jia Yi Lin, Hui Wang, Xi Hao Liu, Bin Han
The properties of the cladding layer depend on the process parameters and the properties of the powder material.
It not only affects the microstructure of the cladding layer, but also has a certain degree of effect on hardness and wear properties.
Effect of Process Parameters Work Together on the Morphology and Properties of Cladding Layer The above scholars considered the influence of parameters on the properties of the cladding layer from a single factor, but in most cases the performance of laser cladding is the result of multiple factors.
The heat input has a great influence on the phase transition in the molten pool, and affects the microstructure of the cladding layer by affecting the particle size and distribution of the reinforcing phase.
Therefore, various factors need to be controlled.
It not only affects the microstructure of the cladding layer, but also has a certain degree of effect on hardness and wear properties.
Effect of Process Parameters Work Together on the Morphology and Properties of Cladding Layer The above scholars considered the influence of parameters on the properties of the cladding layer from a single factor, but in most cases the performance of laser cladding is the result of multiple factors.
The heat input has a great influence on the phase transition in the molten pool, and affects the microstructure of the cladding layer by affecting the particle size and distribution of the reinforcing phase.
Therefore, various factors need to be controlled.
Online since: March 2020
Authors: Gehan A. Abd El Raouf, N. El Mahallawy, M.K. Shoukry
In this work, the mechanical properties of the aluminum alloy (6061) before and after CEC process were examined.
The mechanical properties were tremendously increased in comparison with those of as cast and annealed condition.
The grain size of the materials plays very important role on the mechanical properties such as strength, hardness, wear resistant and fatigue [7-12].
Mechanical Properties Macrohardness, Tensile strength and Elongation properties are shown in Fig. 6 a, b and c respectively significant increase in macrohardness was obtained after the first cycle through the CEC process by a factor of ≈1.5 when compared to that of the annealed sample.
Wang, “The cyclic deformation behavior of Severe Plastic Deformation (SPD) metals and the influential factors”, Metals,Vol. 2, 41-55, 2012
The mechanical properties were tremendously increased in comparison with those of as cast and annealed condition.
The grain size of the materials plays very important role on the mechanical properties such as strength, hardness, wear resistant and fatigue [7-12].
Mechanical Properties Macrohardness, Tensile strength and Elongation properties are shown in Fig. 6 a, b and c respectively significant increase in macrohardness was obtained after the first cycle through the CEC process by a factor of ≈1.5 when compared to that of the annealed sample.
Wang, “The cyclic deformation behavior of Severe Plastic Deformation (SPD) metals and the influential factors”, Metals,Vol. 2, 41-55, 2012
Online since: July 2011
Authors: Qi Zhong Huang, Zhi Yong Xie, Ming Yu Zhang, Rui Xuan Tan, Zhe An Su, Jian Xun Chen
The distribution of microstructure and mechanical properties of carbon-carbon composites
Zhiyong Xie1,a, Ruixuan Tan1, Mingyu Zhang1, Zhean Su1, Jianxun Chen1, Qizhong Huang1
1State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
axiezhiyong310@tom.com
Keywords: Carbon-carbon composites, Microstructure, Mechanical properties, Scanning electron microscopy, Optical microscopy, Raman spectroscopy, Three-point bending tests.
Introduction It is well known that carbon/carbon (C/C) composites produced by chemical vapor infiltration (CVI) of carbon fiber felts exhibit an attractive mechanical properties.
Besides statitistical fiber strength distribution, fiber volume fraction, fabrication process, et.al, the mechanical properties of C/C composites strongly depend on the microstructure of pyrocarbon[1-3].
The important parameters affecting microstructure are temperature and the change of the [AS/VR]-ratio.
The investigations about correlation between matrix microstracture and mechanical properties indicates the crack morphology is controlled by texture and its distributing of carbon.
Introduction It is well known that carbon/carbon (C/C) composites produced by chemical vapor infiltration (CVI) of carbon fiber felts exhibit an attractive mechanical properties.
Besides statitistical fiber strength distribution, fiber volume fraction, fabrication process, et.al, the mechanical properties of C/C composites strongly depend on the microstructure of pyrocarbon[1-3].
The important parameters affecting microstructure are temperature and the change of the [AS/VR]-ratio.
The investigations about correlation between matrix microstracture and mechanical properties indicates the crack morphology is controlled by texture and its distributing of carbon.
Online since: January 2010
Authors: Praveena Nair Sivasankaran, Z. Hamedon, Azmir Azhari
This thesis deals with carbon fiber reinforced plastics (CFRP) composites, an advanced
material which is widely used in manufacturing aircrafts because of their unique mechanical and
physical properties.
Introduction Fiber reinforced plastics have been widely used for manufacturing aircraft and spacecraft structural parts because of their particular mechanical and physical properties such as high specific strength and high specific stiffness.
Carbon fibers show excellent mechanical properties compared to other fibers, i.e. high specific stiffness, very high strength in both compression and tension and a high resistance to corrosion, creep and fatigue [1].
They concluded that delamination at the drill entry and exit are affected by distinct parameters, i.e. at drill entry feed rate was the most significant factor affecting delamination whereas at the tool exit, delamination was most affected by cutting speed [5].
It is a computational technique conducted mainly to learn about the influence of various design factors and to observe the degree of sensitivity of the result to different factors affecting the quality characteristics.
Introduction Fiber reinforced plastics have been widely used for manufacturing aircraft and spacecraft structural parts because of their particular mechanical and physical properties such as high specific strength and high specific stiffness.
Carbon fibers show excellent mechanical properties compared to other fibers, i.e. high specific stiffness, very high strength in both compression and tension and a high resistance to corrosion, creep and fatigue [1].
They concluded that delamination at the drill entry and exit are affected by distinct parameters, i.e. at drill entry feed rate was the most significant factor affecting delamination whereas at the tool exit, delamination was most affected by cutting speed [5].
It is a computational technique conducted mainly to learn about the influence of various design factors and to observe the degree of sensitivity of the result to different factors affecting the quality characteristics.