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Online since: June 2018
Authors: Anastasiya Fedorovna Gordina, Grigory Ivanovich Yakovlev, Ekaterina Karpova, Arina Shaybadullina, Gintautas Skripkiūnas
A number of factors determine the properties of dispersion, such as the type, geometrical parameters and dosage of CNT [1].
One key factor affecting the quality of dispersion is applied plasticizer.
The properties of this dispersion with ultrasonication treatment (D2) were studied during research as well.
Ou, Mechanical properties and reinforcing mechanisms of cementitious composites with different types of multiwalled carbon nanotubes, Comp.: Part A 103 (2017) 131–147
Li, Mechanical properties and microstructure of multi-walled carbon nanotube-reinforced cement paste, Const. and Build.
Online since: November 2019
Authors: B. Sandeep, R. Rakshith, Puneeth Parameshwar Bhat
Experimental results showed that hybridization of the composite with natural and synthetic fibers shows enhanced mechanical properties.
By using hybrids, it is-possible to obtain a-viable compromise between mechanical properties and cost to meet specified design requirements [4].
Fiber point of reference has significant affects on the flexural, Impact, Hardness properties of the Natural Polymer Hybrid Composite. 3.
Overall relationship between the properties of the hybrid laminates under various mechanical loading conditions, the carbon fibers in woven mate form present on each side has resulted in stability between the properties and cost of developed materials.
[15] P Reed, “Mechanical properties and mechanical testing of polymers‟, Handbooks of Polymer Science, Ed G M Swallowe, Chapman and Hall, 1997
Online since: May 2014
Authors: E Wen Huang, Shao Pin Lin, Ge Ping Yu, H.J. Chen, J.Y. Huang, R.C. Kuo, Jia Hong Huang
The mechanical properties of different welding are compared by examining their tensile behaviors at room temperature and 288 °C, respectively.
The local mechanical properties are mapped via hardness tests and the local microstructure is revealed by both of the ferrite number (FN) estimation and conventional metallographic examination.
For the microhardness shown in Figure 2(a), there are a few factors affecting the hardness: (1) the residual ferrite content which can strengthen the dual phase microstructure, (2) the morphology of ferrite where lathy ferrite is harder than vermicular ferrite [3], (3) grain coarsening due to higher heat input, (4) grain refining at the boundaries of each welding pass [4], and (5) work hardening during cooling of weldments with restrain [5].
The first three factors may be related to a higher hardness in the SMA welds, while more passes used in GTAW process may lead to a higher hardness resulting from the last two factors.
The microstructures of the welds were examined and the mechanical properties were measured, respectively.
Online since: September 2011
Authors: Jin Shan Sun, Qing Hui Jiang, Wen Bo Lu, Hong Jun Guo
The factors affecting the TBM tunnel behavior in jointed rock mass is investigated.
However, the jointed rock mass have complex mechanical characters such as anisotropy and hysteresis [1-3].
The mechanical properties of rock masses are specified as: elastic modulus E=20 GPa, Poisson ratio μ=0.25, cohesion strength C= 5 MPa, internal friction angle φ=40°.
The mechanical properties of concrete are specified as: E=35 GPa, μ=0.2.
Online since: January 2018
Authors: Lin Wang, An Jin Liu, Hua Xiang Dai
Ti-10V-2Fe-3Al alloys with α+β phase show higher mechanical properties compared with single β phase alloy.
For their excellent properties, β titanium alloys have been widely used in aerospace industry.
According to the Fig. 2 (a) and (b), the mechanical properties of the quasi-static compression and at the strain rate of 2500s-1 can be compared.
STA2 exhibited the better mechanical properties.
Dynamic mechanical properties in relation to adiabatic shear band formation in titanium alloy-Ti17[J].
Online since: September 2011
Authors: Xiao Ming Qian, Ming Ma, Yuan Bai
Besides, it analyzes the advantages and the necessities of the natural fibre nonwoven materials applied for the noise control, illustrates the present research status and the factors that introduces the sound absorption properties of the natural fibre nonwoven composites used for noise reduction.
Factors that affect the absorption A number of numerical and experimental methods relevant to sound absorption behavior of nonwoven materials have been reported in the literature.
The absorption properties are also affect by the compression of a fibrous mat[21], Insulation and absorption properties of nonwoven fabrics depend on fiber geometry and fiber arrangement within the fabric structure.
The experiment showed that the higher the total fiber surface area, the greater possibilities for a sound wave to interact with the fibers in the fabric structure. what,s more, the surface characteristics, sample size and air gap behind the sample affect the acoustical properties as well[22]. viscoelastic property is found to be the related to the sound absorption property of fabric. the plasma treatment on nonwoven fabrics changes their sound absorption and viscoelastic property as well as their fabric weight and pore size[23].
Wong, Mechanical Management and Development, Vol.23, No.2, 1-3, 2008, (In Chinese) [10] X.W.
Online since: September 2018
Authors: Sergey Shevelev, Aleksey Kondratyuk, Anatoliy I. Kupchishin, Sergei A. Ghyngazov, Valeria Kostenko
Since the properties of ferrites strongly depend on oxygen stoichiometry [15-23], the effect of radiation can significantly affect the intensity of oxygen exchange during radiation heating, depending on the composition and pressure of the surrounding gaseous medium.
It is important to know how such irradiation will affect the mechanical properties of ceramics.
Kulkov, Structure, phase composition and mechanical properties of ZrO2-based nanosystems, Physical Mesomechanics 11 (2008) 29-41
Kostikov, Influence of Technological Factors on Structure and Properties of Alumina-Zirconia Ceramics, Advanced Materials Research 1040 (2014) 845–849
Nikolaeva, Influence of a high-power pulsed ion beam on the mechanical properties of corundum ceramics, IOP Conf.
Online since: May 2012
Authors: Zi Yu Li
In this paper, based on the mechanism of freeze-thaw process, several factors affecting the freeze resistance of concrete were considered, and a regression model including the interaction of loads and freeze-thaw was established according to experimental data.
In the effective depth of the freeze-thaw, the freeze-thaw damage is serious, and the mechanical performance is degraded severely.
Although that part of concrete actually remains a little of compressive strength, its properties are extremely unstable.
The only fly in the ointment is that Eq. 2 and Eq. 4 are dependent on many factors such as species of cement, mixing proportion of concrete and concrete additives.
Research on the Bond-anchorage Performance of Frost-resistant Concrete and Anti-freezing Property of Prestressed Concrete.
Online since: February 2011
Authors: Huan Qiang Luan
Based on pull-out test of different diametrical rebars(12,14,16,20,22) with different anchorage length(10d,15d,20d) in concrete foundation of different strength(C20,C25,C30,C40).Factors affecting the ultimate bearing capacity of rebars are deduced.
It has the advantages in short curing time, good mechanical properties and strong bond force, but it also has disadvantages such as expensive price, poor high temperature resistance, poor durability, and so on[1].While inorganic material can surmount these deficiencies, it has capability of resistant to high temperature, fire-resistant, low cost, and small dielectric loss.
Based on pull-out test of different diametrical rebars with different anchorage length in concrete foundation of different strength .Factors affecting the ultimate bearing capacity of rebars are deduced.
The analysis shows that rebars has good bond and anchor property as the anchor length reaches 15d.
Online since: August 2013
Authors: Long Wu, Guo Sheng Cai, Hai Feng Lu, Zhi Long Li, Hua Feng Lu, Hua Yang, Rong Fa Chen
The ZL102 can not be heating treated to improve the strength, so the modification of liquid metal before filling is necessary to enhance the mechanical properties of ZL102.
The influences cerium-rich mixed RE on the microstructure and mechanical properties of the ZL102 alloy modified by Sr in this paper.
The factors of the orthogonal experimental were shown in Table 2.
The combination of various factors and test results were shown in Table 3.
Conclusions (1) Among the impacted factors, the amount of RE was the most important than holding time and the amount of Sr.
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