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Online since: March 2015
Authors: Jean Denape, M. Yahiaoui, J.Y. Paris
Table 1: Physicochemical and mechanical properties of WC-Co samples P8, P12 and P16.
This process also enhances the mechanical properties of the alumina.
Table 2: Physical and mechanical properties of alumina materials (CIRIMAT laboratory data [4]).
Effect of Material Properties.
In other hand, they also point out that material properties affect the level of energy of the acoustic emission signals.
This process also enhances the mechanical properties of the alumina.
Table 2: Physical and mechanical properties of alumina materials (CIRIMAT laboratory data [4]).
Effect of Material Properties.
In other hand, they also point out that material properties affect the level of energy of the acoustic emission signals.
Online since: May 2021
Authors: Alexey D. Zhukov, I.I. Popov, S.P. Chernukhin, M.O. Asamatdinov
The properties of plaster mixes and plaster coatings depend on many factors.
The dependence of the properties of the plastering mixtures was carried out in the process of using the three-factor experiment.
The experimental conditions, factors, their average set values, and ranges of variation are given in Table 1.
The strength of the clay-gypsum binder in compression (Y3) is an optimization characteristic of its properties.
Discussion Equation analysis shows that, in determination areas of variable factors established by the experimental conditions (Table 1), the setting time is most affected by the consumption of plasticizer and, to a less extent, the consumption of Portland cement (coefficients at X1 and X2).
The dependence of the properties of the plastering mixtures was carried out in the process of using the three-factor experiment.
The experimental conditions, factors, their average set values, and ranges of variation are given in Table 1.
The strength of the clay-gypsum binder in compression (Y3) is an optimization characteristic of its properties.
Discussion Equation analysis shows that, in determination areas of variable factors established by the experimental conditions (Table 1), the setting time is most affected by the consumption of plasticizer and, to a less extent, the consumption of Portland cement (coefficients at X1 and X2).
Online since: January 2015
Authors: Yilmaz Can, Gürkan İrsel, Tahir Altinbalik
While this process is being made, dynamically distributed variable loads affect on the disk-carrier profiles.
For a profile of 150x75 mm in size, the size factor is read as 0.75 [5].
It should be capable of bearing a stress value of 195 MPa with a safety factor of 1.4 [5].
· When the operation was carried out with the initial state of the profiles, a test run was made by performing a 250-hour operation in the area with the same mechanical properties where the damage occurred.
İrsel: Advances in Mechanical Engineering, Vol. 2014 (2014), http://dx.doi.org/10.1155/2014/235687, p.1
For a profile of 150x75 mm in size, the size factor is read as 0.75 [5].
It should be capable of bearing a stress value of 195 MPa with a safety factor of 1.4 [5].
· When the operation was carried out with the initial state of the profiles, a test run was made by performing a 250-hour operation in the area with the same mechanical properties where the damage occurred.
İrsel: Advances in Mechanical Engineering, Vol. 2014 (2014), http://dx.doi.org/10.1155/2014/235687, p.1
Online since: July 2019
Authors: Yan Yin, Yun Wang, Zhong Rui Tan, Wei Jie Yu
The essence of influence mechanism is effective body energy Ev and specific filling rate ω, and can be used as critical process factors.
Laser absorption rate is a key factor affecting heat input.
Laser power, scanning speed, wire feeding speed and surface roughness are selected as changing factors, and the width, height and dilution rate of the cladding layer are selected as evaluation criteria for molding quality.
(2) Effective body energy Ev and specific filling rate ω can be used as critical process control factors.
Laser surface treatment of multicrystalline silicon for enhancing optical properties[J].
Laser absorption rate is a key factor affecting heat input.
Laser power, scanning speed, wire feeding speed and surface roughness are selected as changing factors, and the width, height and dilution rate of the cladding layer are selected as evaluation criteria for molding quality.
(2) Effective body energy Ev and specific filling rate ω can be used as critical process control factors.
Laser surface treatment of multicrystalline silicon for enhancing optical properties[J].
Online since: September 2013
Authors: Chun Liu, Jin Luo, Miao Jia, Zhi Bin Li, Ji Wei Hu, Su Ming Duan, Xian Fei Huang, Yi Wang
Kinetics; Activated carbon; Antimony; Adsorption
Abstract: The affecting factors and kinetic characteristics of antimony (Sb) adsoption onto a type of the coconut shell activated carbon were investigated in this study.
Due to the stability of the physicochemical properties, resistance to acid and alkali, heatproof, and mechanical strength, activated carbon can be regenerated by a variety of methods to restore the adsorption capacity, which can greatly reduce the process cost of removal antimony from the polluted environment.
Due to the stability of the physicochemical properties, resistance to acid and alkali, heatproof, and mechanical strength, activated carbon can be regenerated by a variety of methods to restore the adsorption capacity, which can greatly reduce the process cost of removal antimony from the polluted environment.
Online since: August 2012
Authors: Juan Hua Su, Feng Zhang Ren, Ze Yang
Fig.1 Diagram of the lead frame Fig.2 Simplified bending model
The factors which affect the numerical simulation of the bending process of copper alloy for lead frame are materials, mould clearance, rounded corners of mould, sheet thickness, blank holder force, friction and lubrication, grid division, calculation methods and the speed of stamping.
Therefore, the choice of different materials in the simulation process is a major factors.
Watanabe, Microstructure and mechanical properties of Cu-Ni-Si alloys, Materials Science and Engineering.
Tang, Study of rare earth elements on the physical and mechanical properties of a Cu-Fe-P alloy, Materials Science and Engineering.
Jia, Numerical Simulation Analysis on Bending Properties of Copper Alloy for Lead Frame, Hot Working Technology. 39 (2010) 75-78(in Chinese).
Therefore, the choice of different materials in the simulation process is a major factors.
Watanabe, Microstructure and mechanical properties of Cu-Ni-Si alloys, Materials Science and Engineering.
Tang, Study of rare earth elements on the physical and mechanical properties of a Cu-Fe-P alloy, Materials Science and Engineering.
Jia, Numerical Simulation Analysis on Bending Properties of Copper Alloy for Lead Frame, Hot Working Technology. 39 (2010) 75-78(in Chinese).
Online since: July 2011
Authors: Hiroshi Yamakawa, Daisuke Yonekura, Riichi Murakami, Yuta Fujie, Hayato Nishii
However, the heat treatment often causes a detrimental or negligible effect on the mechanical properties as well as beneficial effect due to the change of micro structure of the steel, softening and releasing the compressive residual stress in the principle stress direction[2]-[4].
The chemical composition and the mechanical properties of as received STB340 are shown in Table 1.
The fatigue properties were discussed on the basis of fractography, hardness, residual stress and grain size for each series.
Table 1 Chemical composition and mechanical properties of STB340.
These results suggest that the circumference compressive residual stress is important factor to examine the fatigue properties of drawn steel as well as the effect of the residual stress distribution of thickness direction.
The chemical composition and the mechanical properties of as received STB340 are shown in Table 1.
The fatigue properties were discussed on the basis of fractography, hardness, residual stress and grain size for each series.
Table 1 Chemical composition and mechanical properties of STB340.
These results suggest that the circumference compressive residual stress is important factor to examine the fatigue properties of drawn steel as well as the effect of the residual stress distribution of thickness direction.
Online since: October 2013
Authors: You Hong Gong, Ni Hong Yang, Shu Han, Sheng Chao Han
Introduction
Carbon Fiber Reinforced Plastic (CFRP) usage in the aerospace industry has been steadily increasing due to its superior material properties such as the high strength-to-weight ratio, high stiffness-to-weight ratio, high corrosion resistance, and low thermal expansion coefficient.
The surface roughness Ra is one of the most important factors to evaluate the surface quality.
Variation in the surface quality depends on the condition of cutting edge and the property the coating.
For Tool B and Tool C, it appears that coating is a main factor in decreasing of the cutting force.
El-Hofy, Factors affecting workpiece surface integrity in slotting of CFRP, 1st CIRP Conference on Surface Integrity (CSI), Procedia Engineering.Vol.19(2011) ,p. 94
The surface roughness Ra is one of the most important factors to evaluate the surface quality.
Variation in the surface quality depends on the condition of cutting edge and the property the coating.
For Tool B and Tool C, it appears that coating is a main factor in decreasing of the cutting force.
El-Hofy, Factors affecting workpiece surface integrity in slotting of CFRP, 1st CIRP Conference on Surface Integrity (CSI), Procedia Engineering.Vol.19(2011) ,p. 94
Online since: November 2011
Authors: Omed Ghareb Abdullah, Sarkawt Abubakr Hussen
INTRODUCTION
The physical properties of polymers may be affected by doping, the certain structural, optical, mechanical, electrical and magnetic properties of the selected polymer can be controllably modified owing to the type of the doping, concentration, and the way in which it penetrates and interacts with the chains of the polymer.
Deshmukh, "Optical properties of polyaniline doped PVC-PMMA thin films", Indian J. of Pure and Appl.
Foulger, "Optical properties of perfluorocyclobutyl polymers", J.
Jain, "Dielectric properties of solution-grown-undoped and acrylic-acid-doped ethyl cellulose", Bull.
Osuji, "Growth and optical properties of Ag2S thin films deposited by chemical bath deposition technique", J.
Deshmukh, "Optical properties of polyaniline doped PVC-PMMA thin films", Indian J. of Pure and Appl.
Foulger, "Optical properties of perfluorocyclobutyl polymers", J.
Jain, "Dielectric properties of solution-grown-undoped and acrylic-acid-doped ethyl cellulose", Bull.
Osuji, "Growth and optical properties of Ag2S thin films deposited by chemical bath deposition technique", J.
Online since: August 2013
Authors: Qiang Yi Xi
Study on Materials Selection and Construction of Digital Language Lab Based on Properties of Electronic Materials
Qiangyi Xi
Office of Foreign Languages School, Jinyinhu Campus of Wuhan Polytechnic University, Machi Road 1#, Hankou, Wuhan, China
bondyxi@hotmail.com
Keywords: equipment; digital language lab; materials selection; construction environment
Abstract.
This paper mainly deals with the materials selection and the construction of the digital language lab based on properties of electronic materials, and thus provides reference to set up more efficient and more effective language labs.
From the structure point of view, because it adopts the computer network technology based on the transmission protocol, and there are no mechanical components in the whole system, there is no mechanical failure.
Many factors need considering, such as the actual demand and price.
The Construction of the Digital Language Laboratory In terms of the properties of electronic materials and the functional characteristics of the digital language lab, the external environment for the language laboratory, in principle, should not be or less affected by noises, dust and high frequency radio waves.
This paper mainly deals with the materials selection and the construction of the digital language lab based on properties of electronic materials, and thus provides reference to set up more efficient and more effective language labs.
From the structure point of view, because it adopts the computer network technology based on the transmission protocol, and there are no mechanical components in the whole system, there is no mechanical failure.
Many factors need considering, such as the actual demand and price.
The Construction of the Digital Language Laboratory In terms of the properties of electronic materials and the functional characteristics of the digital language lab, the external environment for the language laboratory, in principle, should not be or less affected by noises, dust and high frequency radio waves.