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Online since: March 2011
Authors: Wen Bin Sun
In this study, the configuration and the mechanics-electric coupling property were described.
Introduction Many piezoelectric materials with mechanics-electric coupling properties have been used to make transducers in many engineering health monitoring [1].
In general, a piezoceramics transducer has a fatal shortage of brittle affecting the stability of inspection [2].
So, is an important factor and affects the orthotropic performance of the type 1-1 actuator of orthotropic piezoelectric composite material.
An improved mechanical-electrical coupling actuator is simulated with the software COMSOL.
Online since: July 2017
Authors: Juliano Soyama, Thomas Ebel, Florian Pyczak, Márcio C. Fredel, Rafael Paiotti Marcondes Guimarães
However, depending on the application conditions, the mechanical properties of titanium aluminides have to be tailored or improved for the temperature range above 700 °C due to microstructural instabilities, which directly affect creep properties and oxidation resistance.
MIM can deliver sound mechanical properties with good microstructural and chemical homogeneity [2–4].
The authors, however, did not characterise the mechanical properties.
In this temperature range, colony growth is more pronounced and consequently changes of the mechanical properties are expected in the final sintered specimens.
Considering that the porosity levels of the specimens prepared in this study were in the same range, the microstructure changes caused by the different heat treatments seem to be the decisive factor causing the decrease in the mechanical properties.
Online since: March 2022
Authors: Klodian Dhoska, Yeni Muriani Zulaida, Anistasia Milandia, Andinnie Juniarsih, Suryana Suryana, Anne Zulfia, Agus Pramono
The mechanical properties of RPRF results are known to produced better properties, especially mechanical properties.
In this study, ARB experiments were carried out using 6 cycles, but the mechanical properties produced were still below the mechanical properties of RPRF.
Produces increased mechanical properties.
If there is a change in the morphology of the grain, it will affect the increase in mechanical properties, but the volume fraction of the reinforcing particles will tend to decrease [20-22].
In: Proceedings of Strategic Management Factors of MNC’s Subsidiaries–Comparative Analysis of Metal Manufacturing and Other Industries, Praque, Czech Republic, (Klapalova, A., eds). pp. 1–6
Online since: November 2007
Authors: John A. Jansen, Sander C.G. Leeuwenburgh, Jeroen J.J.P. van den Beucken, X.Frank Walboomers, Matthijn F.J. Vos, Nico A.J.M. Sommerdijk, Roeland J.M. Nolte
Due to the associated mechanical forces for such implants, the materials for implant production need to meet specific requirements.
In view of the biological properties of bone implants, it is known that several materials have the capacity to form a chemical bond with bone tissue at the interface and can induce a continuous transition from bone tissue to the implant surface[1].
In addition to being classified as cyto- and histocompatible[6], these DNA-coatings demonstrated to decrease inflammatory cytokine secretion by macrophages[7] and be feasible for loading with growth factors[8;9].
Plain DNA-coatings did not affect the behavior of osteoblast-like cells.
In vitro and in vivo effects of deoxyribonucleic acid-based coatings funtionalized with vascular endothelial growth factor.
Online since: February 2016
Authors: Beata Leszczyńska-Madej, Albert Zygiert, Anna Tylek
The influence of process parameters on microstructure and mechanical properties of PM Al+4 wt.
Therefore to increase its mechanical properties the aluminum alloys are produced.
Additional factor affecting on a better densification is the dendritic shape of Cu powder, increasing the formability of green compacts.
Investigations proved the applied different process parameters have the strongly influence on the obtained microstructures and mechanical properties of Al+4 wt.% Cu alloy.
Enayati, Fabrication and evaluation of mechanical and tribological properties of boron carbide reinforced aluminum matrix nano composites, Materials and Design 32 (2011) 3263–3271
Online since: December 2014
Authors: Jie Wu Cui, Xin Min Huang, Yu Chun Zheng, Yong Qiang Qin, Yan Wang, Yu Cheng Wu, Yu Hong
However, the strength and the conductivity are a pair of conflicting factors.
This paper focused on the study of conductive properties of the alloy.
The main factor infuencing the conductivity of the alloy was the content of the soluting elements.
The results showed that the best comprehensive properties were obtained after solid solution at 920℃ and then aging at 450℃ for 180 min.
Introduction Copper alloys with high strength and high conductivity are serial of structural functional materials with excellent physical properties and mechanical performance[1-3].
Online since: January 2012
Authors: Xian Shu Zheng, Mao Shun Chen, Ling Sun
The excellent electrical properties of CNTs can change the properties of polymeric matrix significantly; when its content is very low, the polymer/CNTs composites may obtain good electrical properties [2].
Its fine processability and mechanical property have make it been widely used in industrial field.
While in a lot of industrial productions, single screw extrusion process is still commonly used for polymer molding, but single screw extrusion molding oriented researches on the influence factors to conducting properties of polymer matrix CNTs composites are rare.
The same extruder is used throughout the experiment to avoid the above stated influence factors.
Influence of Nano-SiO2 on the Mechanical and Crystalline Properties of PBT.
Online since: May 2012
Authors: Guo Cai Wang, Ling Sha, Yang Yang
From the analysis, it can be seen that: at given pile-soil physical properties, the settlement of inclined angle of the pile is smaller than that of the pile installed vertically subjected to vertical loadings; it is not good for larger inclined angle of inclined pile when the pile subjected to inclined loadings and the pile top settlement is always smallest when the inclined angle of the loadings agrees with that of the pile; The location of the horizontal stress balance point is related to the factors, such as loading value, pile inclined angle, et al., when subjected to vertical loadings.
In order to further reveal the effect of inclined angle, pile-soil physical properties, etc., on the settlement of inclined pile, this paper uses the 3-D nonlinear finite element software and investigates the settlement characteristics and the influence factors on the settlement of inclined single pile under inclined loadings.
Hence, it can control the value of the pile’s slope to a certain range from the view of the factors such as construction technology, cost, et al.
Conclusions This paper investigates the settlement characteristics of inclined pile and the influence factors numerically using the non-linear finite element software Adina.
(3) The location of the horizontal stress balance point is related to the factors of loading value, pile inclined angle, et al., when subjected to vertical loadings.
Online since: March 2019
Authors: Radka Pernicová, Tomas Kolomaznik
We have applied this fine grain material to cement mixes and compared their mechanical properties.
Introduction Filler used for cement mixtures, accounts for 70 to 80% of the volume of mixtures, is for its quality one of the decisive factors.
The properties of bond between the binder and the aggregate are based on many factors.
As fundamental physical material characteristics, bulk density ρb [kg m-3] and mechanical properties [MPa] were determined.
The effect of fine grain corundum on mechanical properties of the concrete was investigated by compressive and adhesive strength measurement.
Online since: July 2011
Authors: Yan Yang, Shao Long Huang, Qing Jun Ding, Xin Yan Peng
The current research focuses on the matrix gradation asphalt mixture design and optimization of the ratio of cement mortar, but few studies on how the interface affect to semi-flexible pavement materials properties[3] .Semi-flexible pavement material was a combination of organic and inorganic composite materials, the nature of the interface to semi-flexible pavement directly affect its mechanical properties and road performance.
In order to get excellent mechanical properties and pavement performance for semi-flexible pavement material, matrix mix asphalt mixture design was particularly important.Here we used the volume design method of asphalt mixture, by adjusting the rates pass through 4.75mm and 2.36mm these two key sieve [7], designed for the 30% porosity matrix asphalt mixtures, gradation curve shown in Figure 1.
The author studied the semi-flexible interfacial modifier’s shear properties , anti-fatigue properties, low temperature bending properties and dynamic modulus to determine its’ optimal dosage.He used the volume method of asphalt mixture to designe for the 30% porosity matrix asphalt mixtures,then poured cement mortar into it with different mass ratio interfacial modifier, which met the 28d compressive strength of 30MPa with good fluidity (11.87s) ;analysis of interfacial modifier on the shear properties of composite materials, anti-fatigue properties, low temperature bending properties and dynamic modulus results, to determine the optimal dosage of interfacial modifier.
Composite modulus was a method to describe the viscoelastic properties of asphalt mixture.
With the increase of interfacial modifier content, the overall properties of the semi-flexible pavement material were improved, taking economic factors into account, the best content of interface modifier was 0.4 to 0.6%.
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