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Online since: April 2015
Authors: Guo Liang Xie, De Fu Li, Qing Miao Guo, Jie Hu, Zhen Lei Tang
In addition to the external factors during hot extrusion, the cracks are mainly caused by the primary MC carbides or large dimension of C particles formed due to a relatively short smelting time and large dimension of C particles during smelting with the decreasing plasticity of the grain boundary.
Hot extrusion process to produce high-grade superalloy tubes becomes one of the leading processing methods [6], mainly due to the high productivity of hot extrusion process and high mechanical properties of extruded products.
The quality of extruded tube was affect by many factors, including the high resistance of the material during hot deformation, the parameters of extrusion process, lubrication conditions and so on[7-11].
In addition to these factors above external factors during hot extrusion, the cracks are mainly generated from the grain boundaries or surfaces between the MC carbides and matrix of Inconel 625 superalloy.
Mannan, Microstructure and mechanical properties of Inconel 625 superalloy, J.
Online since: January 2012
Authors: Shuang Mei Li
These properties depend on the particular sensor design, rather than the output signal types [1].
Fig.5 PMOS Wheatstone bridge detection In order to improve the quality of sensitivity, metal coil through current in the magnetic field affected by the Lorentz force, Make the cantilever beam working at the second mode of resonance, and the quality factor is improved by designing like this .
Summary We have discussed the static and dynamic properties of the mcrocantilever and the ways to improve the sensitivity of mcrocantilever.
Mechanical behavior of ultrathin microcantilever[J].
Mechanical quantity sensitive device and its application [M].
Online since: January 2020
Authors: Qiu Ying Jia, Wen Ting Sun, Xu Gao, Shuang Xi Liu, Liang Liang Li, Chang Xin Hu
PES membrane has incomparable advantages over other membrane materials for its excellent mechanical property, remarkable oxidation stability and thermal stability[2;3].
However, as membrane products from traditional non-solvent induced phase separation is applied in the field of food, membrane is polluted quickly because irreversible embedded pollution is liable to occur due to high sinuosity of pore structure, affecting service life of membrane products [7-9].
Because solidification process of hollow fiber membrane and foaming pore-forming process occur synchronously, foaming pore-forming only makes the internal pore structure more connective without affecting pore structure on the surface, effectively guaranteeing mechanical property of the obtained hollow fiber membrane and avoiding the generation of defect.
Fig. 7 The influence of different coagulation bath on mechanical property of membrane filament The influence on membrane pore size.
The mechanical property of membrane filament is guaranteed while cross section of hollow fiber membrane has a wedged shape and runs through even macroporous structure of internal and external surface
Online since: February 2012
Authors: Manh Trung Le, Hsin Te Liao
The significant factors to the process were identified by ANOVA.
Hence, RT parts call for a higher standard in mechanical properties than those produced by RP processes.
D: µm) are the four controlled factors.
Table 3 lists the experimental factors and the factor levels for the SLS process.
ANOVA results The Analysis of Variance (ANOVA) is conducted to find significant factors that affect the percentage of porosity in specimens of the SLS process.
Online since: August 2018
Authors: Teewara Suwan
Curing condition is one of the major factors affecting the mechanical properties and micro-structures of geopolymer.
Amount of calcium oxide influences the amount of calcium (Ca) which affects the properties of geopolymer cement positively and negatively depending on type and dosage of activators.
The sedimentary solid has both physical and chemical properties as a pozzolanic material.
It can be seen that the industrial waste (e.g. fly ash, mine tailing and GBFS) achieved the highest strength followed by natural mineral (metakaolin and natural pozzolan), while general waste (construction waste) seems to produce very low mechanical strength, although other factors, e.g.
However, other vital parameters for geopolymer synthesis are also included in Table 2, i.e. percentage of additives, testing age, heat-curing temperature and heat-curing duration, as the final properties of hardened geopolymer cement are quite sensitive to external factors.
Online since: April 2014
Authors: Li Min Zhao, Xu Jun Mi, Xue Feng, Yan Feng Li, Hao Feng Xie, Xiang Qian Yin
The thermal and thermomechanical properties of these epoxy polymers were characterized by differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA).
We used a method which called fold-deploy shape memory test to characterize the shape memory properties [21].
From the DMA test, the increasing C12-14 alcohols content lowers the crosslink density of the polymer network, which is the primary affected factor for the variety of mechanical properties of the polymers.
The thermo-mechanical properties of epoxy SMP system has been systematically studied in this paper.
[14] Liu Y, Han C, Tan H, et al., Thermal, mechanical and shape memory properties of shape memory epoxy resin, Mater.
Online since: December 2010
Authors: Fredrik Wilberfors, Ingvar L. Svensson
Box 1026, SE-551 Jönköping Sweden a fredrik.wilberfors@scania.com, bingvar.svensson@jth.hj.se Keywords: Grey cast iron, Mechanical properties, Nitrogen, Inoculant, Ludwigson, Hollomon Abstract.
The main purpose with this paper is to show the effect of nitrogen and inoculation on the tensile properties and microstructure of cast iron with lamellar graphite.
In this report, the influence on the tensile properties from additions of nitrogen and inoculant is investigated.
The aim was to vary the nitrogen content and inoculant addition in order to achieve materials with differences in microstructure and mechanical properties.
The experiment was conducted as a three level full factor trial with a repeated midpoint.
Online since: July 2011
Authors: Jin Qian, Chun Hua Hu
Several factors such as repeated loads, vibrations of the bridge deck, thin surface layer, and severe weather conditions accelerate these pavement distresses.
They are then divided into subdomains corresponding to each layer properties.
In the derivation of the stiffness matrix for elements, the geometry of elements, the allowable degrees of freedom for the nodes to displace, and the material properties are considered.
Mechanical response analysis of the steel deck asphalt pavement of the 2nd Nanjng Yangtze-river bridge.
Mechanical Analysis of Pavement on Orthotropic Steel Bridge Deck.
Online since: November 2021
Authors: Edgars Kirilovs, Gūtmane Ilze, Artūrs Ķīsis
Structural Serviceability factors are deflection due to bending, floor vibration, shrinkage [2].
Wood has a number of great properties – strength, flexibility, toughness etc.
The values of wood mechanical properties are diverse in various directions.
Mechanical strength properties of wood are influenced by a number of factors – wood moisture content, density, knots and other wood defects etc. [6].
Therefore, to determine factors affecting the bending strength performance of the glued T-type spruce loose tenon construction joints with and without reinforced plastic clamp fitting, a series of empiric laboratory tests have been conducted in this study to determine the effect on bending load carrying capability of the glued T-type spruce loose tenon construction joints with and without reinforced plastic clamp fitting.
Online since: August 2017
Authors: Valery V. Kuzin, Tibor Szalay, Balázs Zsolt Farkas, László Csorba, Sergei Yu. Fedorov
Ceramic material has preferable properties in mechanical and thermodynamical aspects, these materials are generally very hard and their heat conductivity is low.
These advantageous properties of ceramics make the material difficult to machine using the traditional mechanical (cutting) processes.
The latest review article by Pachaury et al. [2] gives a collection of the affecting parameters.
Control factors Control factors Factor levels 1 2 3 Voltage (U) [V] 80 105 130 Current(I) [-] 10 30 50 Gain, [-] 10 45 80 Gap, [V] 40 55 70 Frequency, [kHz] 80 115 150 Pulse time, (Ton) [µs] 1 3.3 5.6 Polarity +/- - + TiC content, [%] 60 80 Table 2.
Values of control factors No.
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