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Online since: March 2015
Authors: Sergey Prokoshkin, Vladimir Brailovski, Alena Kreitcberg, Andrey Korotitskiy, Karine Inaekyan
Since the last two structures are not predominant, they do not represent a major factor in the resulting material properties after the PDA.
On the whole, if we neglect these additional factors, the maximum value and the degree of the realization of the theoretical limit of the recovery strain is affected by two main factors. 1) The first, i.e.
Static functional properties.
Note that similar evolution of mechanical properties as a function of CR-PDA processing can be observed for Ti-50.6%Ni alloy.
Two main factors affect the value and realization theoretical limit of recovery strain in Ti-Ni SMA.
Online since: July 2015
Authors: Sufizar Ahmad, Andanastuti Muchtar, Hamimah Abdul Rahman, Linda Agun, Muhamad Subri Abu Bakar
Thermal expansion coefficient (TEC) is one of the most important factors that ensure reliability of a SOFC system [4].
Tietz [5] found that large differences in TEC may induce large internal stress during the actual application, thereby affecting the operational stability of SOFCs.
From Powder Properties to Fuel Cell Performance – A Holistic Approach for SOFC Cathode Development, Solid State Ionics. 179 (2008) 1509–1515
A., Muchtar, A., Muhamad, N., & Abdullah, HStructure and Thermal Properties of La0.6Sr0.4Co0.2Fe0.8O3−δ–SDC Carbonate Composite Cathodes for Intermediate-to Low-Temperature Solid Oxide Fuel Cells, Ceram.
Structure, Electrical Conducting and Thermal Expansion Properties of La0.6Sr0.4Co0.2Fe0.8O3−δ–Ce0.8Sm0.2O2−δ Composite Cathodes, J.
Online since: March 2009
Authors: Celaletdin Ergun, Murat Baydogan, Abdurrahman Bahadir
For this reason, HA has been extensively used as an implant material for a bone substitute material because of its excellent osteoconductive properties.
The properties of HA can be modified by a substitution mechanism with different ions into HA structure.
Today, there are many researches on HA crystal morphology, density, porosity, pore sizes and distribution, chemical composition, and surface structure which are major factors affecting the performance of HA.
After revision surgery, biomaterial-centered infection is one of problem which affects the patient life.
As an antibacterial material silver and silver-based compounds found to be very effective on 16 kinds of bacteria, including Escherichia coli and Staphylococcus aureus with their antiseptic properties [9].
Online since: June 2012
Authors: Zhan Qiang Liu, Fu Lin Jiang, Fan Zhang
Investigations of Transient Machined Workpiece Surface Temperature in High Speed Peripheral Milling Using Inverse Method Zhanqiang Liu1, a, Fan Zhang1, b and Fulin Jiang1, c 1School of Mechanical Engineering, Shandong University, Jinan, 250061, China amelius@sdu.edu.cn, bzhangfansdu@163.com, cjflok@163.com Keywords: Workpiece temperature, Moving heat source, Inverse method, Peripheral milling Abstract: In high speed machining, temperature distribution in workpiece is the main factor which directly affects the surface integrity and dimensional accuracy of machined workpiece.
Introduction In manufacturing industry, there are still more than 90% of the mechanical parts which are made by machining [1].
Material of workpiece is 1045 steel and its properties are shown in Table 1.
Table 1 Thermal physical property parameters of 1045 steel k [W/(m·℃)] a (m2/s) ρ (kg/m3) c [J/(kg℃·)] 49.8 1.31×10-5 7850 486 This paper takes a single factor experiment.
Li: Metal Cutting Theory (Mechanical Industry Press, Beijing, 1985) [3] J.
Online since: October 2011
Authors: Ming Li Wang, Xiu Yang
This paper employs pre-existing cracks in frozen PMMA (polymethylmethacrylate plastic) which are produced by the mechanical method to analyze the evolution of the boundary effect of PMMA and to study the mechanisms of cracks growth and coalescence.
Introduction The interior cracks defect of brittle material cause high concentration of stresses which may affect the mechanical properties of materials.
In these experiments, 3-D cracks are prefabricated in PMMA, then by uniaxial compression, this paper analysis the main factors of them.
Refrigerated PMMA has similar properties to brittle material and can easily be observed [2].
Online since: September 2012
Authors: Cosimo Carfagna, Lorena Affatato
New functions are required to modern textiles: wearing comfort, durability, cleaning properties, optimized functionality for specific applications (workwear, sportswear, medical wear).
The smart technology is rewarding materials with new properties and abilities which have never been experienced before.
Changing in their mechanical properties as well as their thermal, optical, and electromagnetic properties, in a handy manner in response to the stimuli.
As an example, microfibers have waterproofing properties but at the same time they are permeable to water vapour.
The amount of energy transferred to make these changes is determined by the material properties.
Online since: January 2013
Authors: Ze Cheng Guo, Ming Chen, Dong Bo Zhao, Fei Meng Zhang
Introduction As one of the most important foundation material in twenty-first Century, because of its own with the special properties of materials, nanophase material has a significant role[1-4] in reducing the friction factor, improving the wear resistance, also the dense and self-repairing performance.
The tribological properties and self repairing effect have been tested.
Static adsorption properties.Due to the heat with friction of raising the surface temperature is the important factors why the surface of machine part is to invalidate.
Conclusion Through the test and analysis results, the following conclusions can be drawn: a) In high temperature and static conditions, RE nanophase composite material has good adsorption on metal substrate, and can be self-repaired in nano level, which shows its good tribological properties.
International Journal of Materials &Product Technology, 2003, 18 (4) : 338-343 [4] Zhang Zhe, Yang Qin, Wu Xian CaCO_3 nanoparticles in 45 # tribological properties of steel surface [J].
Online since: October 2025
Authors: Tamaz Eterashvili
Changes in the material structure during fatigue are reflected in its mechanical properties.
The solution to the above-listed issues will help model and obtain new classes of materials and alloys with improved cyclic mechanical and radiation properties.
Thin foils were prepared from them by mechanical and electrochemical thinning.
Naturally, the change in the substructure affects the process of microcrack propagation.
It is also necessary to consider the acting stresses and the range of the Schmid factor.
Online since: July 2020
Authors: Chen Liu, Hao Ran Zhou, Zhen Yuan
Preparation and Properties of Modified Boron Nitride/Epoxy Resin Thermal Conductive Composites Liu Chen1,a, Zhou Haoran2,b* and Yuan Zhen3,c 1-3Harbin University of Science and Technology, Harbin, China a1104574488@qq.com, bZhouhaoran2013@163.com, c907101988@qq.com Keywords: epoxy resin; boron nitride; thermal conductivity; thermal stability Abstract.
Introduction Epoxy resin has been widely used in electronic packaging, component bonding and other fields due to its excellent electrical insulation properties, high mechanical properties, dielectric properties and simple machining processes.
This may be the nonuniform thermal scattered hot spots leads to increase in uneven thermal stress intensity factors.
Preparation and properties study of epoxy /modified boron nitride thermal conductive composites[J].
Study on Preparation, thermal conductivity and electrical insulation properties of Epoxy/AlN[J].
Online since: January 2006
Authors: Yuh Chung Hu, Wei Hsin Gau, Wei Hsiang Tu
Many of MEMS materials are used in thin-film form, and it is well known that thin-film properties can differ from bulk properties.
One of the key technologies to the material properties extraction of thin films through measuring the electric-circuit behavior is the simulation of electrical-mechanical coupling behavior of micro test structures.
where the coefficient η to be solved is the associated modal participation factor.
Through the C-V measurement and the material property extraction algorithms, one can obtain the material properties of the test microstructure.
The geometric and material properties of the test micro cantilever beams.
Showing 14791 to 14800 of 25943 items