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Online since: January 2013
Authors: Marco Valente
The presence and the mechanical properties of the infills affected the distribution of damage throughout the structure.
Several researchers suggest different reduction factors to describe the decrease of stiffness, depending on the dimensions and the position of the openings.
In this study different stiffness reduction factors for different opening percentages were considered, according to Asteris [2].
The influence of the mechanical properties of the infill walls was less marked in presence of openings.
The presence and the mechanical properties of the infills affected the distribution of damage throughout the structure.
Online since: February 2014
Authors: Fu Qiang Yang, He Xue, Jin Tian
Although the steel at high temperature has the performance of high strength, oxidation resistance, and good weld ability [1, 2], the stress corrosion cracking (SCC) would still occur in 2.25Cr1Mo in high temperature water environment, and it is one of the key issues affecting the safety and life of nuclear power plants.
Finite Element Simulation Material Mechanical Model.
The mechanical properties and creep parameters of 2.25Cr1Mo steel are listed in Table 1 [6].
Table 1 Mechanical parameters of 2.25Cr1Mo steel.
Tu: China Mechanical Engineering, Vol. 16 (2005) No.5, p.456.
Online since: October 2012
Authors: Zhong Ji, Ya Jie Li, Yi Guo Luan, Ren Liu, Chao Zheng
Paperboard used in this paper is anisotropic, and its mechanical properties include tensile strength and elongation.
According to the tensile properties shown in Table 2, the elongation in CD is about 1.5 times higher than that in MD.
And moisture is a vital factor influencing paperboard properties and deep drawing process.
Paperboard with high tensile strength, elongation and low basis weight has good deep drawing properties. 4.
[6] GB/T 1294-2008: Paper and Board-Determination of Tensile Properties, (China Standards Press, China 2008).
Online since: September 2014
Authors: Xiao Lin Qian, Lin Wang, Xiao Hua Yang, Yong Xue Lin
Weak gel has shear thinning property.
Fig.2 Influence of mass concentration of Fig.3 Influence of mass concentration of crosslinker polymer on apparent viscosity of weak gel on apparent viscosity of weak gel Impact of Salinity to the Viscosity of Weak Gel The depth of salinity of the polymer gel matrix solution is also an important factor which affects performance of the gel.
Besides, different reservoir has different salinity, the impact of salinity has also become one of the one of the major factors which limits their range of applications.
Viscosity properties of aqueous solution in brine at higher temperature for twin-tailed l hydrophobically associating tercopolymers P(AM/NaAA/DiC6AM).
The factors to influence the behavior of polymer weak gels in high salty media.
Online since: December 2011
Authors: Liang Feng, Qi Bin Liu
Microstructure and Properties of Roller Surface Alloyed by Laser Feng liang1,a,Liu Qi-bin1,2,b 1 College of Materials and Metallurgy, Guizhou University, Guiyang 550003 2Guizhou Key Laboratory for Microstructure and Strength of Materials,Guiyang, 550003 a E-mail;fengliang7535333@126.com, b E-mail:qbliu2@263.net Key words: Metallurgical roller; Laser alloying; Microstructure; Properties.
Introduction Laser surface alloying (LSA) is an important modification technique which could enhance surface properties of materials.
It may be affected by two factors[5]: alloying elements such as Cr, Ni, Mo, Si elements exists in connecting zone, which raises the corrosion resistance.
Fig.3 XRD plot of the alloying layer Properties analysis of alloying layer Fig.4 presents the microhardness distribution of the alloying layer along the depth.
The comprehensive good mechanical properties of laser alloying contributes much to the rollers.
Online since: October 2010
Authors: Guang Xu Cheng, Zhi Cheng Zhang, Qing Hao Yang
The influence of conditions on the properties of PVFM foam, such as mechanical properties, water absorption, pore structure and bulk density, is well discussed individually.
It has been shown that both the reactant and acid catalyst affect the degree and speed of acetalization, therefore the mechanical properties, pores continuity and water absorption of the resultant sample.
Since a lot of factors such as agitating speed, reaction temperature would influence the foaming performance of PVF, all the reaction conditions are carefully controlled.
However, the WA peak appears in the sample prepared with 4 g SLS, so do the mechanical properties.
A. water absorption properties B. mechanical properties Fig. 5.
Online since: August 2010
Authors: Nitinat Suppakarn, Kasama Jarukumjorn, Chalermpan Keawkumay
Effects of surfactant content and organoclay content on cure characteristics, mechanical properties, and morphologies of NR nanocomposites were investigated.
These caused the enhancement of mechanical properties of the NR nanocomposites.
The CEC of a clay affects the properties of the organoclay sice it relates to the amounts of a surfactant, which intercalate between the silicate layers [5].
Table 1 shows cure characteristics and mechanical properties of NR nanocomposites.
These evidences led to the enhancement of mechanical properties of the NR nanocomposites.
Online since: August 2022
Authors: Sivanraju Rajkumar, Ram Subbiah, M. Ravichandran, V. Mohanavel, T. Sathish, S. Jayasathyakawin, S. Dinesh Kumar
Properties such as these are influenced by factors like sintering temperatures, reinforcement, powder compaction pressure, particle size, reinforcement volume fraction and cooling times at sintering temperatures.
A composite matrix is determined by many factors, including the composition of the reinforcement particles, the solubility of reinforcement particles, and other factors.
In a wide range of studies, ceramic reinforcement in the Cu matrix improved its mechanical and tribological properties, but it adversely affected its electrical conductivity.
Properties Table 1 shows the mechanical, electrical and thermo physical properties of copper alloys and composites.
The sintering temperature impacts mechanical and tribological properties (hardness and density).
Online since: February 2007
Authors: Qing Rui Yin, Guo Rong Li, Wang Zhong Zhang, Ai Li Ding, Zhi Gang Zhu, Bao Shan Li
Effect of Sr Doping on Piezoelectric Properties of Pb(Mn1/3Nb2/3)O3-Pb(Zr,Ti)O3 Ceramics B.S.
In recent years, with the development of the high-power piezoelectric devices such as super-sonic vibrators or trans- formers, materials with high mechanical quality factor (Qm), high planar coupling factor (kp) and high dielectric constant (εr) are required.
In the ternary systems Pb(Mn1/3Nb2/3)O3-PbTiO3-PbZrO3 (PMnN-PZT), low heat generation can be expected with large vibration velocity and a high mechanical quality factor [2,3].
Further investigations are made to the high-power properties on this ceramic system [2,5].
Sintering temperature also affects the dielectric and piezoelectric properties.
Online since: January 2014
Authors: Dariusz Boroński
The approach presented in work of Tricoteaux [7] is similar to the one proposed above, whereas, it utilizes the Glinka-Molski model and the material properties for the heat affected zone, for the analysis of local strains and stresses.
As in practice, in the weld zone, we have to do with three different materials with different properties including: welds metal, heat affected zone, and base metal.
The basic mechanical properties of the base metal are given in table 2.
The system of fatigue and static testing of microobjects (MFS) enables determination of the material mechanical properties with the use of very small specimens and with the nanoscale accuracy.
This means that the analysis of the joint fatigue life based on the base material properties with the lack of other factors impact which might impair fatigue life in the weld zone (geometrical and structural notches), should provide conservative calculation results, especially for lower levels of local stress and strain.
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