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Online since: February 2011
Authors: Guang Chen, J.L. Cheng, H.W. Xu, Y.L. Du
Introduction
Bulk metallic glasses (BMGs) exhibit high mechanical strength, high hardness, good fracture toughness and superior corrosion resistance[1-3], which make them suitable for various structural applications.
As a result of the crystallization, the unique physical and chemical properties will change.
However, the nanophases formed in the crystallization process are affected by many factors, such as the alloy composition, heating rate and temperature etc..
The factors affecting the crystallization behavior were investigated in detail.
As a result of the crystallization, the unique physical and chemical properties will change.
However, the nanophases formed in the crystallization process are affected by many factors, such as the alloy composition, heating rate and temperature etc..
The factors affecting the crystallization behavior were investigated in detail.
Online since: July 2014
Authors: Li Kun Wang, Lei Qin, Chao Zhong, Dan Long, Jing Jing Liu, Bin Zhang
The authors conclude the regular of the properties of composites varying with PZT volume fraction.
In addition, it is easier to improve the properties by changing PZT or polymer volume fraction.
In this paper, the regular of properties of composites varying with PZT volume fraction will be researched.
Its detailed properties are shown in Table 1.
Table 1 Properties of PZT672 Material PZT-672 Q value 247 Electro-mechanical coupling factor Kt 0.48 The quasi-static capacitanceCp(pF) 1754 DepletionD(mU) 15.5 Relative dielectric constant 3818 Piezoelectric constant d33(pC/N) 550 PZT672 were cut by automatic scribing machine(DISCO DAD321).
In addition, it is easier to improve the properties by changing PZT or polymer volume fraction.
In this paper, the regular of properties of composites varying with PZT volume fraction will be researched.
Its detailed properties are shown in Table 1.
Table 1 Properties of PZT672 Material PZT-672 Q value 247 Electro-mechanical coupling factor Kt 0.48 The quasi-static capacitanceCp(pF) 1754 DepletionD(mU) 15.5 Relative dielectric constant 3818 Piezoelectric constant d33(pC/N) 550 PZT672 were cut by automatic scribing machine(DISCO DAD321).
Online since: April 2016
Authors: Tereza Tribulová, Iveta Čabalová, František Kačík
Degradation of carbohydrates can cause the deterioration of mechanical properties of wood.
The interaction among the chemical changes and mechanical as well as physical properties were researched and discussed in many papers.
Some authors determined the interaction of the overall colour change and mechanical properties of wood [8], loss of weight, amount of cellulose, hemicelluloses, and lignin and the substance properties [9,20].
Niemz, Effect of high temperature on the change in color, dimensional stability and mechanical properties of spruce wood, Holzforschung. 57 (2003) 539-546
Younsi, Effect of thermal treatment on the chemical composition and mechanical properties of Birch and Aspen, Bioresources. 3 (2008) 517-537
The interaction among the chemical changes and mechanical as well as physical properties were researched and discussed in many papers.
Some authors determined the interaction of the overall colour change and mechanical properties of wood [8], loss of weight, amount of cellulose, hemicelluloses, and lignin and the substance properties [9,20].
Niemz, Effect of high temperature on the change in color, dimensional stability and mechanical properties of spruce wood, Holzforschung. 57 (2003) 539-546
Younsi, Effect of thermal treatment on the chemical composition and mechanical properties of Birch and Aspen, Bioresources. 3 (2008) 517-537
Online since: March 2021
Authors: Sharifah Maszura Syed Mohsin, Adnan Zaidatul Syahida, Abdul Shukor Lim Nor Hasanah, Ariffin Nur Farhayu
This paper study the mechanical properties of eggshell as a cement replacement in concrete.
Hence, this paper focus on review of eggshell powder as partial cement replacement in term of mechanical strength properties.
“Green Concrete from Sustainable Recycled Coarse Aggregates: Mechanical and Durability Properties.”
A review of the mechanical properties of concrete containing biofillers
“Mechanical Behavior and Physical Properties of Chicken Egg as Affected by Different Egg Weights.”
Hence, this paper focus on review of eggshell powder as partial cement replacement in term of mechanical strength properties.
“Green Concrete from Sustainable Recycled Coarse Aggregates: Mechanical and Durability Properties.”
A review of the mechanical properties of concrete containing biofillers
“Mechanical Behavior and Physical Properties of Chicken Egg as Affected by Different Egg Weights.”
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.
Online since: September 2015
Authors: Vladimir Kim, Tatiyana Matery
Introduction
Low-voltage cables are exposed to various external factors during the operation, including the effect of aggressive media.
In other words, the swelling affects both the resistance to oxidation and the mechanical characteristics of the cable sheath.
At the same time, it is known [3] that although the swelling always ultimately leads to deterioration in the mechanical properties of the polymer, the plasticizing effect of the swelling could cause a temporary increase of the strength of the shell.
Furthermore, the properties of the polymers may vary considerably depending on processing conditions [4].
Section 1: measurement of thickness and overall dimensions; tests for determining the mechanical properties”.
In other words, the swelling affects both the resistance to oxidation and the mechanical characteristics of the cable sheath.
At the same time, it is known [3] that although the swelling always ultimately leads to deterioration in the mechanical properties of the polymer, the plasticizing effect of the swelling could cause a temporary increase of the strength of the shell.
Furthermore, the properties of the polymers may vary considerably depending on processing conditions [4].
Section 1: measurement of thickness and overall dimensions; tests for determining the mechanical properties”.
Online since: August 2019
Authors: Gujjala Raghavendra, Shakuntala Ojha, P. Pratap Naidu
A recent review was conducted by Barkoula and Karger-Kocsis [1] on various parameters and properties that can affect the erosion rate of polymer composites.
The material properties are shown in Table 1.
Table 2 shows the experimental factors for air jet erosion test and Fig.3 shows the experimental set up of air jet erosion test.
Günay, Residual mechanical properties of carbon/polyphenylene sulphide composites after solid particle erosion, Mater.
Hergenrother, Physical and mechanical properties of high-performance thermoplastic polymers and their composites, in: L.A.
The material properties are shown in Table 1.
Table 2 shows the experimental factors for air jet erosion test and Fig.3 shows the experimental set up of air jet erosion test.
Günay, Residual mechanical properties of carbon/polyphenylene sulphide composites after solid particle erosion, Mater.
Hergenrother, Physical and mechanical properties of high-performance thermoplastic polymers and their composites, in: L.A.
Online since: December 2020
Authors: Mohamed Mounis Alim, Said Mechachti, Mosbah Zidani, Soheib Mokhtara
The friction coefficient and the specific wear rate after plasma nitriding were reduced by 3 and 5 factors, respectively.
This study aims to investigate the structural, morphological, mechanical and tribological properties of a duplex layer formed on AISI 4340 steel by hard chromium electroplating and plasma nitriding in pure nitrogen gas, to explore the surface properties in hydrogen-free nitriding atmosphere.
Tadjine, Improvement of Mechanical and Electrochemical Properties of Titanium Thin Films Deposited by Duplex Treatment, in: Int.
Riccò, Mechanical and tribological properties of electrolytic hard chrome and HVOF-sprayed coatings, Surf.
Manna, Structure and properties of Cr xN coating, Surf.
This study aims to investigate the structural, morphological, mechanical and tribological properties of a duplex layer formed on AISI 4340 steel by hard chromium electroplating and plasma nitriding in pure nitrogen gas, to explore the surface properties in hydrogen-free nitriding atmosphere.
Tadjine, Improvement of Mechanical and Electrochemical Properties of Titanium Thin Films Deposited by Duplex Treatment, in: Int.
Riccò, Mechanical and tribological properties of electrolytic hard chrome and HVOF-sprayed coatings, Surf.
Manna, Structure and properties of Cr xN coating, Surf.
Online since: June 2008
Authors: Kazutoshi Kunishige, Akihiko Takemura, Kenji Harada, Rintaro Ueji
Introduction
TWIP (twinning induced plasticity) steel is one of the advanced steels for automotive use because
of the attractive mechanical properties at high strain rates.
Most of the studies have focused on the improvements of the chemical composition and the modeling of the mechanical properties, while the research works concerning the relationship between the microstructure and the mechanical properties is limited [6,7,8].The authors [7,8] have been reported the effect of the grain refinement on the tensile properties and have been clarified that the ultrafine grained TWIP steel exhibits a large work hardening and keeps an adequate elongation at any strain rate.
The aim of this study is to clarify the mechanical properties at wide range of strain rate in the TWIP steel with the mixture of ultrafine deformation structure and the ultrafine grained structure.
When using the thermal activation theory, the applied stress should be separated to internal stress with no contribution of the thermal activation and effective stress affecting the thermal process.
Consequently, the result of this study indicates that the intermediate mixture of the nano-structured deformation structure and recrystallized fine grains should be required for the preferable mechanical properties.
Most of the studies have focused on the improvements of the chemical composition and the modeling of the mechanical properties, while the research works concerning the relationship between the microstructure and the mechanical properties is limited [6,7,8].The authors [7,8] have been reported the effect of the grain refinement on the tensile properties and have been clarified that the ultrafine grained TWIP steel exhibits a large work hardening and keeps an adequate elongation at any strain rate.
The aim of this study is to clarify the mechanical properties at wide range of strain rate in the TWIP steel with the mixture of ultrafine deformation structure and the ultrafine grained structure.
When using the thermal activation theory, the applied stress should be separated to internal stress with no contribution of the thermal activation and effective stress affecting the thermal process.
Consequently, the result of this study indicates that the intermediate mixture of the nano-structured deformation structure and recrystallized fine grains should be required for the preferable mechanical properties.
Online since: May 2016
Authors: Ramesh Kannan, Shini Shanmughan
Studies say the factors influencing the formwork pressure are mix design, rate of placement, consistency, temperature, vibration and form dimension.
The only way is to formulate an empirical equation from the data obtained of experimental procedure or from field data or to formulate a theoretical model using the mechanical as well as rheological properties of SCC.
The maximum pressure distribution and the depth on which it is acting will be depending on those factors.
From the literature review and the results of the experiments, several inferences have been drawn: · Self compacting concrete is a complex material whose properties depend on different factors such as characteristics of cement, design mix, consistency of mix etc.
· The factors depending on the lateral pressure developed in SCC include both extrinsic and intrinsic properties of material which may be temperature, rate of placement, dimensions of form etc
The only way is to formulate an empirical equation from the data obtained of experimental procedure or from field data or to formulate a theoretical model using the mechanical as well as rheological properties of SCC.
The maximum pressure distribution and the depth on which it is acting will be depending on those factors.
From the literature review and the results of the experiments, several inferences have been drawn: · Self compacting concrete is a complex material whose properties depend on different factors such as characteristics of cement, design mix, consistency of mix etc.
· The factors depending on the lateral pressure developed in SCC include both extrinsic and intrinsic properties of material which may be temperature, rate of placement, dimensions of form etc