Automated Management in Aerospace Production

Kuritsyna, V. V.; Siluyanova, M. V.

doi:10.3103/s1068798x18030085

Cited by 24 publications

(4 citation statements)

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“…In the coatings, a softening of the bonds of carbon atoms, the addition of hydrogen and oxygen atoms to carbon atoms with free valences (intensity ratio ID/IG = 1.57) was detected. Obviously, the formation of such a composition is associated with the peculiarities of the processes of electrical discharge action and transfer of the electrode material to the titanium substrate [18], [19]. Due to the intensive processes of dispersion and sublimation of the anode -graphite already at the beginning of the ESA process, a layer of fine graphite appears on the cathode, in the zone of impact of the discharges, which, during further processing, covers the entire surface being doped.…”

Section: Methods Of Solving the Problemmentioning

confidence: 99%

Providing of Operational Properties for Gas-Turbine Engine Parts and Assemblies Using Electrospark Deposition

Денисов

Boytsov

Siluyanova

2020

MSF

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Article explains manufacturing capability of titanium parts reliability enhancement and life cycle enhancement by electrospark deposition using low energy discharges. Carbon electrodes used to form functional properties of parts surface layer. Alloyed carbooxide zone consist of highly dispersed structure (with particles of titanium carbide, titanium oxide, graphite), with 3-10 micron thick, and high hardness antifrictionality. Alloyed layer contain ordered phase Ti8C5, TiC, and the structure of Ti6C3,75. Parts dimensions almost do not changed after electrospark deposition with carbon electrodes. Subsequent diamond burnishing decrease friction coefficient and surface roughness. Fatigue resistance increased after healing of defects and microcracks. Local carbooxidation and burnishing used to increase wear resistance of titanium alloys.

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Section: Methods Of Solving the Problemmentioning

confidence: 99%

Providing of Operational Properties for Gas-Turbine Engine Parts and Assemblies Using Electrospark Deposition

Денисов

Boytsov

Siluyanova

2020

MSF

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“…Согласованность экспертов оценивалась методом ранговой корреляции с ранжированием критериев по важности всеми экспертами [11]. Степень согласованности мнений экспертов в теории ранговой корреляции выражается через коэффициент конкордации (коэффициент согласованности мнений экспертов) (2) [12].…”

Section: рис 3 «выстраивание» магнитных частиц при наложении магнитно...unclassified

Determining a rational scheme of machining of gas turbine engine essential parts in magnetorheological environments by the method of expert assessment

Boytsov

Kurilovich

Kuritsyna

et al. 2019

VESTNIK of Samara University. Aerospace and Mechanical Engineer

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The paper examines the basic schemes, features and advantages of magnetic abrasive machining. In this work we provide information on working environments for magnetic abrasive machining, compositions of ferro-abrasive powders and roughness of the surfaces achieved by their application; the process of forming the working layer is also analyzed. A classification of magnetic abrasive machining schemes according to the type of the magnetic inductor used, as well as their advantages and disadvantages are discussed. It is shown that the basic scheme of magnetic abrasive machining, the kind and dispersion of the abrasive medium, are assigned depending on the specific machining conditions and the requirements for the surface layer condition, whereas the choice of the type of the magnetic inductor is not so obvious, since each of the types has its advantages and disadvantages. An expert assessment procedure in choosing an acceptable magnetic-inductor scheme from a number of alternatives for use in magnetic abrasive machining is presented. The method of expert assessment was tested drawing on the example of the work of a group of experts formed by representatives of science and industry. It is shown that the direct-current electromagnetic inductor scheme is a rational scheme of magnetic abrasive machining according to the type of inductor used. This is due to the simplicity of process control and the expansion of technological capabilities, applicability for a wide range of problems solved by magnetic abrasive machining. Permanent-magnet magnetic abrasive schemes can be considered as an alternative to permanent-magnet ones.

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“…One consequence is a sharp drop in revenue and cash flow for all stakeholders (airlines, airports, air traffic control services, aircraft manufacturers, and maintenance companies). In these circumstances, some Russian airlines have begun to ship cargo in empty passenger planes [ 4 ].…”

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confidence: 99%