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Online since: February 2020
Authors: Somrerk Chandra-ambhorn, Thanasak Nilsonthi, Muriel Braccini, Valérie Parry
The mechanical behaviour and adhesion properties of thermal oxide scales are key issues for steel processing and long-term durability.
Eqs. 2.18 and 2.19 are two examples of stress intensity factors in infinite volumes.
Thus it provides a better description of the adhesion properties of an interface.
(2.20) where P is the fluid pressure, h is the bulge altitude and C is a constant depending on the mechanical properties and the residual stress of the metallic foil.
Appleby, Some factors influencing the adherence of oxides on metals, Mater.
Online since: January 2016
Authors: Xi Peng Xu, Guo Qin Huang, Mei Qin Zhang, Yi Qing Yu
The results indicate that the depth of cut is the leading factor in affecting grinding forces whereas the surface roughness is mainly governed by the grinding speed.
An yttrium vanadata (YVO4) single crystal was used as workpiece and its properties are listed in Table 1.
Table 1 Properties of the workpiece Table 2 Parameters of grinding experiments Crystal Structure Density Mohs hardness Peripheral speed vs (m/s) Depth of cut ap (µm) Workpiece velocity vw (m/min) Tetragonal: a = b = 7.12 Å c = 6.29 Å 4.22 g/cm3 ~ 5 (Glass-like) 25, 30, 50, 70 3, 5, 10, 15 0.6, 1.2, 3.6, 6 Grinding experiments were carried out on a high speed grinder (BLOHM), whose spindle is capable of running up to 8000rpm.
Combined with the experimental results of grinding forces, surface roughness and surface morphologies, it is found that the depth of cut is the leading factor in affecting grinding forces whereas the surface roughness is mainly governed by the grinding speed.
Chinese Journal of Mechanical Engineering, Vol. 43, pp.176-183, 2007
Online since: November 2011
Authors: Raunak Kashyap, Mukund Narayanan, Arjun Mondody, N. Arivazhagan, S. Narayanan, Ramkumar K. Devendranath
Monel 400 is nickel-copper alloy being widely in thermal and nuclear power plants, marine environments because to its outstanding properties include high ductility, good weldability and good corrosion resistance.
In the present investigation, an attempt was made to evaluate the mechanical properties of gas tungsten arc welded Monel 400 weldments.
Therefore, detailed failure and laboratory investigations were conducted to determine the factors that led to the premature failures of the Monel 400 in natural Gulf seawater and 3.5% NaCl solutions.
The microstructure examination revealed the prominent equiaxed coarse grain with the well defined grain boundaries in the heat affected zone due to prolonged temperature.
The inter polarization of grains varies due to the transfer of heat from the weld zone to the heat affected zone and immediate cooling traps the oxide between the grains due to which the heat affected zone would have lesser strength, hardness and high corrosion attack.
Online since: October 2014
Authors: Karsten Ehrig, Andreas Staude, Giovanni Bruno, Yener Onel, Andreas Kupsch, Manfred P. Hentschel, Axel Lange, Thomas Wolk, Bernd R. Müller
Mechanical, thermal, and filtration properties can only be precisely estimated if the morphology of both solid matter and porosity can be quantitatively determined.
Indeed, the anisotropy of the thermal expansion is widely used to tailor the thermal and mechanical properties [6].
In general, porosity and pore morphology directly determine the effective mechanical properties of porous ceramics [7].
Pore and grain orientation explicitly enter in current models used to extract mechanical and filtration properties [8].
[5] W.D.Kingery, Factor affecting thermal stress resistance of ceramic materials.
Online since: September 2022
Authors: Xiu Long Wu, Xiu Mei Zheng, Hai Sheng Lu, Jun Hao Li, Zuo Cong Liao, Huan Sheng Huang
The results indicated that when the temperature was below 300 °C, the PVA fiber could improve the mechanical properties of ULGC.
There is very little study on the mechanical properties of ULGC after exposure to elevated temperature.
A series of mechanical properties tests were conducted on ULGC before and after high temperature exposure.
Mechanical and Fracture Properties of Ultra-High Performance Geopolymer Concrete: Effects of Steel Fiber and Silica Fume.
Recommendation of RILEM TC 200-HTC: Mechanical Concrete Properties at High Temperatures—Modelling and Applications.
Online since: September 2015
Authors: Xi Li, Hao Xie, Jiao Zhang
EMU gearbox is a key component of high-speed train, the reliability of the gearbox will directly affect the operational safety of EMU.
Introduction EMU gearbox is a key component of high-speed train, the reliability of the gearbox will directly affect the operational safety of EMU.
Material grade is ZAlSi7Mg1A, codenamed ZL114A, its properties as follows: elastic modulus 66GPa, Poisson's ratio 0.3, the density 2700kg / m3.
Mechanical Properties of Material A357.0 is the US ZL114A corresponding grade, according to GB/T 1173-1995 "Casting aluminum alloys", ASTM B108-2006 “STANDARD SPECIFICATION FOR ALUMINUM-ALLOY PERMANENT MOLD CASTINGS ", as well as the literature [3, 4], the mechanical properties of the material ZL114A is shown in Table 1.
Study on Mechanical Properties of A357 Casting Aluminum Alloy [J].
Online since: January 2023
Authors: Gui Zhi Xu, Zhan Feng Deng, Luo Yue, Hui Tan, Xiao Hu, Jie Song, Gao Qun Zhang, Peng Xiang Song, Xiao Tong Liu
The press condition can directly affect the relative density, improving the conductivity and mechanical properties.
In addition, carbon black tune the structure, electrical, and mechanical properties.
The phenolic resin content is an important factor that affects the performance of composite materials.
The strength of the mechanical properties is influenced by temperature (Figure 8).
These factors reach the maximum value when the carbon black content is 7%, the highest being 345 S/cm.
Online since: February 2011
Authors: Khudhayer J. Jadee, A.R. Othman
It was found that the behavior of bolted joints in composite structure is affected by many factors, such as geometry, joint material, clamping–load provided by the bolts, ply orientations, etc.
Accordingly, various researches have been conducted on the analyses of stress distribution, failure prediction, and strength properties of bolted joint both experimentally and numerically.
Factors Affecting Joint Strength Geometric Parameters.
In the analysis, many effects such as clamp-up, secondary bending and through-thickness stress could not be accounted for [44], and also inadequate to represent the true strength properties as the analysis could not take into account the effect of delamination buckling [41].
Bolted composite joint requires a huge task in modulating the different parameters that contribute to the mechanical properties of a comprehensive bolted joint design.
Online since: March 2006
Authors: Yu Xian Di, Xin Hua Ji, Lin'an Li, Jin Long Chen, Yu Wen Qin
Computational Simulation of Tensile Mechanical Properties of Nano-crystal Material Fe Yuxian Di1, a Xinhua Ji 2, b Lin'an Li 3, c Yuwen Qin 4, d Jinlong Chen 5, e 1 Dept. of Mechanics, Tianjin University, Tianjin 300072, P.R.
The traditional finite element analysis method in conjunction with the atomic simulation technology was applied to study the mechanical properties of nanostructure materials.
One of the most frequently investigated is the mechanical properties.
The constitutive model for each phase is developed in next section Material model For the nanocrystalline phase, we assume the mechanical properties of a perfect, dislocation free material.
The defect and impurity would affect the NC materials mechanical properties.
Online since: September 2016
Authors: K.T. Akhil, K. Shunmugesh, George Davis, Solomon Blaise, Cyriac Genuvin, Paul Bins
This paper studies the mechanical properties of the aramid fiber reinforced epoxy resin composite by varying the percentage composition.
The results of the tests on the three compositions are analyzed and the variation in its mechanical properties are noted.
This paper includes the mechanical testing of the different properties of the aramid fiber that is manufactured through vacuum suction method.
This makes the adhesion properties to increase between the epoxy and carbon.
This angle affects both the fracture propagation and the fracture toughness.
Showing 4171 to 4180 of 26166 items