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Online since: June 2012
Authors: Jenn Sen Lin, Chun Hung Lai, Cheng Hsing Hsu, Hsi Wen Yang, Yu Hsuan Chang, Hsin Han Tung
The correlation between the microstructures and the microwave dielectric properties was also examined.
These changes may directly affect the microwave dielectric properties of the Nd(Co1/2Ti1/2)O3 samples.
The dielectric properties were significantly improved.
Cross, Synthesis and Dielectric Properties of a Cubic Perovskite Material: La(Mg1/2Ti1/2)O3, Mater.
Kim, Influence of ZnO evaporation on the microwave dielectric properties of La(ZnTi)O3, Mater.
Online since: April 2019
Authors: Rakdiaw Muangma, Tawat Soitong, Supattra Wongsaenmai
Introduction Kraft paper was well known as the fiber-reinforced composite because the tensile properties could be improved by adding of fiber to matrix of material [1].
Regularly, the mechanical properties such as hardness is the crucial indicator that widely used for microstructure separation in metallurgical research.
These mechanical properties of materials usually used the mathematical model that based on Finite Element Method (FEM).
The static-mode of BHN that uses for macro-hardness clarification and related to other mechanical properties.
Pawlak, The effect of chemical composition on microfibrillar cellulose films from wood pulps: Mechanical processing and physical properties, Bioresource Technology 101 (2010) 5961–5968
Online since: July 2008
Authors: Luis Héctor Hernández-Gómez, G. Urriolagoitia-Calderón, L.E. Granda Marroquín, E.A. Merchán-Cruz, G. Urriolagoitia-Sosa
One has to keep in mind that fatigue strength depends on material properties and geometry.
In the first instance, the mechanical properties of the material were evaluated with static torsion tests.
Currently, the fatigue life of this shaft is established by static analysis, safety factors and fatigue analysis (experimental and numerical).
The long crack is less affected by the properties of the microstructure than in the first stage.
Mechanical Engineers. (1954) p. 82
Online since: March 2017
Authors: Shafiza Afzan Sharif, Mohamad Hasmaliza, Julie Juliewatty Mohamed, Zainal Arifin Ahmad, Wan Azhar Wan Yusoff
Synthesis and Characterization of Pb(Zr0.52Ti0.48)O3 Properties via High Planetary Mill N.
Grain size properties of Pb(Zr0.52Ti0.48)O3 ceramics increased with increasing the sintering temperature and duration.
However, the properties of piezoelectric ceramic are strongly influenced by their manufacturing procedures.
During firing process, the material is soaked for few hours to get the desirable properties.
This can be concluded that factors influencing the quality of sintered ceramics include of sintering temperature and duration of the sintering process [9].
Online since: April 2003
Authors: Y. Kuen, Z. Tao, Y. Gao, S. Tse
Tao Department of Mechanical Engineering, Hong Kong University of Science and Technology Clear Water Bay, Kowloon, Hong Kong, China Keywords: Machining, In-process Measurement, Coolant Flow Patterns Abstract.
It was found that the coolant flow patterns were one of the critical factors, which affect the effectiveness of the measurement.
However, the opaque optical property of the coolants can be a problem for the in-process measurement of surface profiles using optical instruments.
Based on the properties of the original images obtained from the experiment, it was found that all the pixels for the peak of the histogram are the background and all the pixels for the lowest point are the flow pattern.
The location of the pattern and the area under the curve are the important factors which affect the effectiveness of the measurement by the laser sensor.
Online since: December 2014
Authors: Ján Kozák, Peter Koteš, Martina Ivašková
The result of this physicochemical reaction is a permanent change of the material that changes chemical, physical and mechanical properties.
The actual exhibition of corrosion attack is usually very diverse and depends on the nature of metal, glass, polymers, composites, environment and all external and internal factors, which have an impact on the material [1,3,4].
Degradation of materials in Europe caused by sulfur compounds is much lower today; despite the measures, air pollution is still a difficult problem, because many other factors causing increased corrosion loss of conventional materials are still used in human life [7-9].
The objective of this program is to quantitatively assess the impact of air multi-pollution, such as ozone, particulate matter, sulfur and nitrogen compounds and other substances, as well as evaluating parameters affecting atmospheric corrosion and pollution of major materials used in the construction and reconstruction of constructions and cultural heritage objects.
Černý, The corrosion properties of metallic structural materials, STNL Praha, Praha, 1984.
Online since: December 2024
Authors: T. Surya, E. Narasimhulu, K Supraja, G. Sai Kumar, A. Vignesh, T. Nikhil
By incorporating natural zeolite powder into blended cement, the research aims to improve concrete performance and durability against environmental factors.
The properties of cement were shown in Table 1.
Table 1 Properties of cement S.No Description Results 1.
The properties are shown in Table 2.
The properties of coarse aggregate are shown Table 3.
Online since: October 2012
Authors: Qiang Guo, Zhi Hai Tan, Zheng Ping Zhao, Wen Kai Zhai
Introduction Nickel-aluminium bronze was developed in the early 20th century and has been widely used in the industry for its excellent mechanical properties and high corrosion resistance [1].
Nickel-aluminium bronze CuAl10Ni5Fe4 was developed on the basis of aluminium bronze [4] and showed higher strength, wear resistance and excellent anti-friction properties.
However, there are few reports on the tribological properties of CuAl10Ni5Fe4 so far, so it has great significance to study its tribological properties, wear resistant mechanism and the influencing factors.
The M2000A wear tester was used to investigate the tribological properties of CuAl10Ni5Fe4 cubical specimens under the sliding condition.
The content of Cu is low on the worn surface after prior corrosion that maybe one of the factors to reduce the wear resistances.
Online since: May 2011
Authors: San Qiang Shi, Fan Yan Meng, Gui Sheng Wang, Shigenobu Ogata
The manner in which topological defects are distributed is affected by the initial strain and the heating temperature.
Introduction Much of the interest in CNT arises from the mechanical response to severe deformation and strains.
CNTs have already demonstrated fascinating mechanical properties [1-3], and are considered as promising candidates for a new generation of extremely light and superstrong nanoscale fibers.
It is obvious that the temperature is the main factor to determine the tensile yield stress of the tube.
The mechanical and thermal properties of this sort of tubes are under investigation, because these topological defects can influence mechanical and thermal properties of the SWCNT [21].
Online since: July 2017
Authors: Frédéric Pascon, Arjen Kolovaar, Tom van Eekelen, Maarten Bach, Christian Brauner, Arne Breede
In NX CAE also interfaces and mapping algorithm have been developed to read information’s like filling factors from RTMWorx.
First, the basic engineering properties have been derived with standard tensile tests (DIN ISO 527-3) as a starting point for the structural design of the component.
All thermal properties of the material (heat capacity, orthotropic conductivity) can then be defined as temperature and degree of cure dependent functions.
The stiffness properties of the fibers and the resin matrix are defined separately and they depend on the degree of cure X (matrix only) and on the temperature T.
Material properties such as viscosity and permeability have been analysed and are used as input for the simulations.
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