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Online since: November 2011
Authors: Shu Lin Wang, Gang Liu, Bo Zhou, Wei Zhan Zhang, Zhi Jie Yang
The basic principle of induction heating, which is an applied form of Faraday’s discovery, is the fact that alternating current (AC) flowing through a coil affects the magnetic movement of a conductor located near the coil and alternating magnetic field leads to generating current on the surface of the conductor.
In accordance with Lenz law, we can know that magnetic field caused by induced current, in return ,will affect the variation of the current flowing through the coil .In fact, the current is not changeable, so the way of loading should be taken into consideration.
Electromagnetic induction is the leading factor and determines the course of heat conduction to some extent. 87% quantity of heat is generated in vortex layer, so it is necessary to analyze the magnetic field.
So it is necessary to do research on the parameters which affect the deflection of the clamping bore.
Clain, Numerical modeling in induction heating for axisymmetric geometries, IEEE Transactions on magnetics,vol,33(1) (1997):739-745 [7] “Mechanical engineering material data sheetse” ditorial board, Mechanical engineering material data sheets, BEI Jing: Machinery industry press, 1995
Online since: July 2021
Authors: Alexander Ryazantsev, Anna Shirokozhukhova, Olga Shipilova
Introduction In mechanical engineering filter elements of various designs are used, which can be divided into the following main types: oil, air, fuel, cabin, diesel and hydraulic.
A number of factors affecting the aircraft reliability level must be provided to prevent abnormal and emergency situations during the liquid rocket engine operation, associated with the occurrence of high-temperature bundles, fires due to the foreign particles ingress into the fuel components composition.
The thickness of the sheet determines not only the mechanical strength, but also the filter resistance to vibration loads.
In the manufacture of a filter element designed for fine cleaning of fuel, to obtain a large number of small dimensions channels in one step is an urgent problem in mechanical engineering.
During laser processing, the material is removed as a mixture of molten and vaporized particles, the ratio of which depends on the material properties and the laser radiation intensity.
Online since: August 2015
Authors: Nuchthana Poolthong, Patrpimol Suwankan, Nuttaphong Sornsuwit
It was found that casting with mold preheating temperatures would have influence on mechanical properties.
However, the gating design significantly affected the tensile properties and microstructure of the cast specimen [4].
CAD models of molds generated for finite element method mesh as well as casting parameters and material properties are put into Cast-Designer for the simulation.
Sabau, Srinath Viswanathan, Material properties for predicting wax pattern dimensions in investment casting, Materials Science and Engineering A362 (2003) 125–134
Tremblay, An investigation on microstructural and mechanical properties of solid mould investment casting of AZ91D magnesium alloy, Materials Characterization 59 (2008) 178-187
Online since: December 2024
Authors: D. Shakeera Banu, P. Sailatha, G. Naveen, D. Naresh, C. G. Lohith, P. Dhanabal
Coconut Shell properties S.
Fine aggregate properties S.
Physical properties of Coarse aggregate S.
However, a number of factors, including as the kind and size of coconut shell aggregates, the conditions under which they cure, and the overall mix design, will affect the specific density.
An experimental investigation of key mechanical and durability properties of coconut shell concrete with partial replacement of fly ash.
Online since: October 2019
Authors: Su Yi Gu, Jie Du, Y.J. Yan, Zheng Cun Zhou
The β-Ti alloys exhibit excellent shape memory effect and superelastic properties.
The interstitial atoms in the alloys have important effect on their physical and mechanical properties.
The small elements such us C,N,O and H in metals have important influences on mechanical, physical and chemical properties [6-8].
Yashiro, Design and mechanical properties of new β type titanium alloys for implant materials, Mater.
Snoek, Effect of small quantities of carbon and nitrogen on the elastic and plastic properties of iron, Physica, 8(1941)711-733
Online since: December 2018
Authors: Severino Rodrigues de Farias Neto, A.G. Barbosa de Lima, A.J. Ferreira Gadelha, T.R. Nascimento Porto, T.H. Freire de Andrade
The study confirms wind velocity as main variable that strongly affecting dispersion phenomena.
Among the principal factors that promotes dispersion of the atmosphere pollutant are local meteorological conditions and turbulence phenomena.
The conclusion was that’s possible calculate the quality and quantity environmental factors and that natural gas is better fuel than diesel, presents 0.944 ecological efficiency against 0.914 of diesel, considering a thermal efficiency of 54% in the combined cycle.
The presence of an additional variable does not affect fluid flow by default, although some fluid properties may be defined depending on the additional variable.
Then, the boundaries don’t affect the internal fluid flow.
Online since: September 2012
Authors: Li Dong Sun, Chun Guang Hu, Xiao Tang Hu, Peter Zeppenfeld, Zhi Dan Yan
Deposition temperature is a key factor influencing the growth morphology of thin-films, aiming at this phenomenon, a precise control system of deposition temperature in ultra-high vacuum is developed in the paper.
And the substrate deposition temperature is a key factor to affect the morphology of thin-films in the process of growth because it is not only related to the molecular diffusion style and diffusion coefficient of single molecules and molecular clusters on the surface, but also associated with the film growth morphology, crystalline state and optical properties [6-8].
The ultra-high vacuum conditions should not be affected by used components in a wide range of temperature variation; (2).
Therefore, the mechanical connection relationship between the substrate carrier and the sample retainer can cause a certain temperature gradient between theirselves.
It is worth mentioning that the mechanical installation of such a system still needs to be optimized, it is undoubtedly that further controllable temperature range of the system can be expanded if the more close mechanical connection between the substrate carrier and the sample retainer is established.
Online since: January 2011
Authors: Guo Wei Ma, Zhu Shan Shao, Zhan Ping Song
Mechanical properties for each layer of the laminated shell are listed in Table 1.
Table 1 Properties of each layer of composite cylindrical shell.
Properties Lamina thickness E1 = 19.0 GPa E2 = 7.6 GPa Each layer thickness = 1mm G12= 4.1 GPa μ = 0.26 ρ = 1643 kg/m3 It is seen from Fig. 2 that liquid level dramatically affects the natural frequencies of the shell.
It’s seen that the first mode of natural frequency is also dramatically affected by liquid level.
Comparing to the aforementioned factors, this effect is not quite significant.
Online since: July 2008
Authors: Lay Poh Tan, Bramasta Nugraha
It was found that the total acid concentration is still the dominant factor over the gradient design in affecting the degradation and subsequently the release profiles.
However, the starting mechanical properties are seriously compromised in this method.
There are two factors involved in this; the acid gradient and the total acid concentration.
The thermal properties were monitored using DSC to confirm this and Table 2 shows the summarized thermal properties of the films.
Thermal properties of drug loaded samples.
Online since: January 2013
Authors: Hao Chen Qin, Lian Wei Liu, Wei Ren Bao, Wei Ping Si, Li Ping Chang, Li Na Han
Several metal oxides had been deposited into the pores of alumina supports using the reactive properties of SCW [2] .
They found that the product can easily penetrate in porous structures such as alumina due to the gas-like transport properties and very low surface tension of SCW.
In this paper, the fresh and used samples were analyzed by X-ray diffraction (XRD), nitrogen sorption measurements and atomic absorption spectrophotometer (AAS) to characterize the properties of sorbent.
Properties of Mn-based sorbents and regeneration samples Sample Mechanical strength, N/mm BET surface area, m2/g Loading rate, % γ-Al2O3 support 16.5 270 --- T300t30V100 16.7 134 89.30 T330t30V100 17.6 90 92.54 T350t30V100 23.4 76 95.27 T380t30V100 22.7 61 96.41 Reg1-T350t30V100 18.1 Reg2-T350t30V100 19.8 Reg3-T350t30V100 18.7 Reg4-T350t30V100 18.9 The mechanical strength and specific surface area of sorbent are the important physical parameters and directly affects their sulfidation and regeneration behavior.
Bao, Preparation of Desulfurizer by Super-critical Water Impregnation Method and Its Sulfidation Properties at Mid-temperature, J.
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