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Online since: September 2013
Authors: Z.M. Cui, Y.G. Han, J.P. Kong, Q.Q. Chen
The two main factors in the processing were described.
After items and systems tests, we fixed some factors affecting on processing.
Main factors affecting on processing efficiency are grinding speed, free abrasive grains and composite lapping plate, etal.
These tow factors of grinding speed and grain size play a different effect from common grinding.
Grinding speed is the main factor affecting the processing efficiency.
After items and systems tests, we fixed some factors affecting on processing.
Main factors affecting on processing efficiency are grinding speed, free abrasive grains and composite lapping plate, etal.
These tow factors of grinding speed and grain size play a different effect from common grinding.
Grinding speed is the main factor affecting the processing efficiency.
Online since: October 2011
Authors: Dillip Kumar Biswal, Dibakar Bandopadhya, Santosha Kumar Dwivedy
The bending deformation measurement and analysis of the thermo-mechanical properties of the fabricated IPMC is carried out.
Introduction Electro-active polymers (EAPs), also known as Artificial Muscles, belong to a class of smart materials that show strong relationship between the applied electric potential and their mechanical properties.
Due to these interesting properties, IPMCs are considered for various novel devices including micro-robot arms, micro-pumps, four-finger gripper, dust-wiper, robot fish and active catheters have already been proposed [4].
Thermo mechanical analysis.
However, researches are going on to find-out the effects of temperature and other influencing factors that affects the linear thermal expansion mechanism of IPMC film.
Introduction Electro-active polymers (EAPs), also known as Artificial Muscles, belong to a class of smart materials that show strong relationship between the applied electric potential and their mechanical properties.
Due to these interesting properties, IPMCs are considered for various novel devices including micro-robot arms, micro-pumps, four-finger gripper, dust-wiper, robot fish and active catheters have already been proposed [4].
Thermo mechanical analysis.
However, researches are going on to find-out the effects of temperature and other influencing factors that affects the linear thermal expansion mechanism of IPMC film.
Online since: August 2015
Authors: Mohammed Binhussain, A.M. Mustafa Al Bakri, Hussin Kamarudin, Wan Mastura Wan Ibrahim, Aeslina Abdul Kadir
The effects on their physical and mechanical properties have been discussed.
Raw Materials for Geopolymer The raw materials play a significant role in the geopolymer reaction and affect the mechanical and microstructure properties of the final geopolymeric products.
The chemical composition and particle size of these materials are important factors affecting the geopolymer reaction.
Mechanical and Microstructure Properties X-Ray Fluorescence.
Mechanical and physical properties of fly ash foamed concrete.
Raw Materials for Geopolymer The raw materials play a significant role in the geopolymer reaction and affect the mechanical and microstructure properties of the final geopolymeric products.
The chemical composition and particle size of these materials are important factors affecting the geopolymer reaction.
Mechanical and Microstructure Properties X-Ray Fluorescence.
Mechanical and physical properties of fly ash foamed concrete.
Online since: March 2013
Authors: Mou Zhi Liu, Xiao Hua Bao
It would lead to air-gap magnetic field distortion of the generator, which affected the generator’s electromagnetic properties.
In the research of the machine’s electromagnetic properties, the permeance had been acted as the key factor affecting the air-gap magnetic field and induced potential, having been the key link of motor design and electromagnetic performance optimization.
So the serious influence of the electromagnetic properties of generator would be brought about.
Then the changing permeance would have serious effects to the generator’s electromagnetic properties. 2.
And the spatial distribution of the air-gap magnetic field waveform was the motor’s most critical factors deciding the electromagnetic properties.
In the research of the machine’s electromagnetic properties, the permeance had been acted as the key factor affecting the air-gap magnetic field and induced potential, having been the key link of motor design and electromagnetic performance optimization.
So the serious influence of the electromagnetic properties of generator would be brought about.
Then the changing permeance would have serious effects to the generator’s electromagnetic properties. 2.
And the spatial distribution of the air-gap magnetic field waveform was the motor’s most critical factors deciding the electromagnetic properties.
Online since: September 2016
Authors: Masaaki Itabashi
Welding Current Dependence of Dynamic Mechanical Properties for
Spot-Welded Electric Arc Furnace Steel Sheet
Masaaki Itabashi1, a *
1Department of Mechanical Engineering, Tokyo University of Science, Suwa, 5000-1, Toyohira, Chino, Nagano 391-0292, Japan
aemail itabashi@rs.suwa.tus.ac.jp
Keywords: Spot welding, Nugget diameter, Electric arc furnace steel, Dynamic mechanical properties, Welding current
Abstract.
Introduction Automotive structure is made of blast furnace steel, because mechanical properties of such a structural steel are controlled precisely.
Then, mechanical properties of the steel are relatively scattered.
Fig.13 Welding current dependence of dynamic mechanical properties Fig.14 Welding current dependence of quasi-static mechanical properties Summary The sheet of 980-MPa grade electric arc furnace steel of 1.0 mm in thickness was evaluated in the form of single-lap spot-welded tensile-shear specimen.
Harding (Ed.), Mechanical Properties at High Rates of Strain 1979, Institute of Physics, Bristol and London, 1979, pp.71-80
Introduction Automotive structure is made of blast furnace steel, because mechanical properties of such a structural steel are controlled precisely.
Then, mechanical properties of the steel are relatively scattered.
Fig.13 Welding current dependence of dynamic mechanical properties Fig.14 Welding current dependence of quasi-static mechanical properties Summary The sheet of 980-MPa grade electric arc furnace steel of 1.0 mm in thickness was evaluated in the form of single-lap spot-welded tensile-shear specimen.
Harding (Ed.), Mechanical Properties at High Rates of Strain 1979, Institute of Physics, Bristol and London, 1979, pp.71-80
Online since: February 2012
Authors: Zhi Hai Cai, Yue Lan Di, Zhen Yang, Ping Zhang
The effects of negative bias voltage on morphology, hardness, adhesion strength, microstructure and tribological properties were studied.
The deposited samples were characterized for its compositional, structural, mechanical, and tribological properties.
Tribological properties Friction coefficient curve of films at different bias is showed in Fig.9.
Affected by different bias voltages, wear ratio of composite films decreased as the bond strength increasing, indicating that bias voltage affected the wear weightlessness of composite films through affecting the bond strength between films and basal body.
Combined the analysis of the influences of bias voltage on the surface morphologies and phase structure, surface morphologies and wear-resistant properties of films keep approximately same change tendency, indicating that the wear-resistant properties of films were affected by bond strength and surface morphologies together.
The deposited samples were characterized for its compositional, structural, mechanical, and tribological properties.
Tribological properties Friction coefficient curve of films at different bias is showed in Fig.9.
Affected by different bias voltages, wear ratio of composite films decreased as the bond strength increasing, indicating that bias voltage affected the wear weightlessness of composite films through affecting the bond strength between films and basal body.
Combined the analysis of the influences of bias voltage on the surface morphologies and phase structure, surface morphologies and wear-resistant properties of films keep approximately same change tendency, indicating that the wear-resistant properties of films were affected by bond strength and surface morphologies together.
Online since: August 2018
Authors: Soon Kok Heng, Muhammad Khusairy bin Bakri, Lee Tet Sean, Elammaran Jayamani
Table 1: CFF typical mechanical properties.
Thus, throughout this research, the investigation was done on the tensile and flexural properties of CFFs/UP composites with varied fiber loading, along with its factors affecting it.
Wool, Mechanical properties of chicken feather fibers, Polym.
Mechanical and thermal properties of chicken feather fiber/PLA green composites.
Effect of chemical treatment on the mechanical properties of sisal fibre reinforced polyester composites.
Thus, throughout this research, the investigation was done on the tensile and flexural properties of CFFs/UP composites with varied fiber loading, along with its factors affecting it.
Wool, Mechanical properties of chicken feather fibers, Polym.
Mechanical and thermal properties of chicken feather fiber/PLA green composites.
Effect of chemical treatment on the mechanical properties of sisal fibre reinforced polyester composites.
Online since: May 2014
Authors: Jorge López-Cuevas, M. León-Carriedo, M.I. Pech Canul, J.L. Rodríguez Galicia, C.A. Gutiérrez Chavarría
However, is necessary to consider that during the processing stage could originate defects or heterogeneities in materials that can adversely affect the mechanical properties during service [2].
Furthermore, the development of a uniform microstructure in the green parts improves both thermal consolidation and final mechanical properties [4].
General speaking, the assessment and quantification of these mechanical properties is done experimentally by mechanical testing mainly based on ASTM compression tests [9,10].
As was mentioned, zircon particles may affect the mechanical properties hence the Young and the fracture modulus was evaluate in all samples.
In addition, by mixing alumina and zircon particles it is possible produce composites with a wide range of mechanical properties that can be used in a wide range of structural applications.
Furthermore, the development of a uniform microstructure in the green parts improves both thermal consolidation and final mechanical properties [4].
General speaking, the assessment and quantification of these mechanical properties is done experimentally by mechanical testing mainly based on ASTM compression tests [9,10].
As was mentioned, zircon particles may affect the mechanical properties hence the Young and the fracture modulus was evaluate in all samples.
In addition, by mixing alumina and zircon particles it is possible produce composites with a wide range of mechanical properties that can be used in a wide range of structural applications.
Online since: December 2012
Authors: Nan Liang Chen, Jin Hua Jiang, Wen Long Sui
The radial force is the most basic mechanical property of intraluminal stent.
However, the development of medical intraluminal stents which have suitable mechanical properties and help tissue cells reproduce is still a hot research topic [1,2].
The radial force describing the ability of stent to withstand external forces is the critical pressure when buckling failure occurs and is one of the most important mechanical properties of intraluminal stent [3].
These three factors are separately changed to find the relationship of the braiding process and the radial supporting force of stents, which are twelve kind of braided intraluminal stents with different pore sizes braded by a domestic spindle type braiding machine.
The relationship of gear ratio of braiding machine and the radial compressive properties of the tubular stents is shown in Fig. 4.
However, the development of medical intraluminal stents which have suitable mechanical properties and help tissue cells reproduce is still a hot research topic [1,2].
The radial force describing the ability of stent to withstand external forces is the critical pressure when buckling failure occurs and is one of the most important mechanical properties of intraluminal stent [3].
These three factors are separately changed to find the relationship of the braiding process and the radial supporting force of stents, which are twelve kind of braided intraluminal stents with different pore sizes braded by a domestic spindle type braiding machine.
The relationship of gear ratio of braiding machine and the radial compressive properties of the tubular stents is shown in Fig. 4.
Online since: December 2014
Authors: Yong Quan Yuan, Xue Liang Jiang, Zhong Lin Zhu, Jiang Chen
Experimental study on the compressive strength of cement mortar
Yongquan Yuan1, Xueliang Jiang1(Corresponding author),
Zhonglin Zhu1, Jiang Chen1
1School of Civil Engineering and mechanics,
Central South University of Forestry and Technology, Changsha 410004, China
Keywords: Cement mortar, Compressive strength, Mechanical properties, Water cement ratio, Linear regression
Abstract: Cement mortar is an ideal similar material.
The changing rule of the cement mortar strength along with age was also analyzed.Through the test, the mortar mixture ratio that was consistent with the original rock mechanical properties was determined ultimately.
High performance cement mortar usually has higher mechanical properties, good durability and so on[3].
Conclusions (1) In a certain extent, the compressive strength of cement mortar is affected by the time, so the testing time shall be strictly controlled in 20 min at most
(2) Comparing the test results and the original rock mechanics performance, considering the economic factors, the M5, M7.5, M10 optimum mixture ratio of three kinds of strength grade of cement mortar are determined, as 1:6.50:1.21,1:5.58: 1.04,1:5.18:0.96
The changing rule of the cement mortar strength along with age was also analyzed.Through the test, the mortar mixture ratio that was consistent with the original rock mechanical properties was determined ultimately.
High performance cement mortar usually has higher mechanical properties, good durability and so on[3].
Conclusions (1) In a certain extent, the compressive strength of cement mortar is affected by the time, so the testing time shall be strictly controlled in 20 min at most
(2) Comparing the test results and the original rock mechanics performance, considering the economic factors, the M5, M7.5, M10 optimum mixture ratio of three kinds of strength grade of cement mortar are determined, as 1:6.50:1.21,1:5.58: 1.04,1:5.18:0.96