Method of Calculating A Priori Reliability of Elements of Complex System

Desyatirikova, Elena N.; Chernenkaya, Liudmila V.; Mager, Vladimir E.

doi:10.1109/rusautocon.2018.8501747

Cited by 25 publications

(8 citation statements)

References 8 publications

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“…Then their reduction is less significant and does not exceed 10...15%. Cyclical pressure with voltage amps of less than 400 MPA, almost does not cause relaxation of residual compressive stresses [14]. The results of the experiment on relaxation of residual stresses are shown in Figure 1.…”

Section: Methodsmentioning

confidence: 93%

Relaxation patterns of technological residual voltage in the surface layer of high-strength steel when cyclically loaded

Kravchenko

Smolyaninov

et al. 2021

E3S Web Conf.

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Experimentally investigated patterns of changes in technological residual stresses under the influence of variable pressure in the surface layer became 30XNS2A. A mathematical model of relaxation of residual compressive stresses created by surface plastic deformation techniques with symmetrical cyclical bending of samples has been proposed. An empirical expression is proposed for assessing the final value of residual stresses as a result of cyclic loading, depending on the stress amplitude of a symmetric cycle. An expression is given for estimating the coefficient of relaxation rate of residual compressive stresses from their initial value, amplitude of alternating stresses and material properties. The constants of these expressions are determined for various construction materials. The theoretical dependences describe well the obtained experimental data. To predict the level of residual stress realization under operational loading, a formula was obtained to calculate their change as a result of the action of a step loading block with different amplitudes and duration of their action at each of the stages.

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Section: Methodsmentioning

confidence: 93%

Relaxation patterns of technological residual voltage in the surface layer of high-strength steel when cyclically loaded

Kravchenko

Smolyaninov

et al. 2021

E3S Web Conf.

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“…Believing that the regoscope program of ground de-icing protection of the sun consists of n subprocesses [16].…”

Section: Methodsmentioning

confidence: 99%

Application of automated systems for quality control of ground anti-icing treatment of aircraft

et al. 2021

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For the first time, this paper addresses the need to automate the maintenance of the quality control and control system at all stages and stages of the life cycle - anti-conduct fluid (POJ) for ground-based anti-de-dealing treatment (POO) of an aircraft. The possibility of evolution of the quality control of the object of ground de-icing physical and chemical treatment of the surface of the aircraft - de-icing liquids, in “Management of quality - de-icing liquid as an object to ensure the safe take-off of the aircraft” is considered. The definition was introduced: “The quality of de-icing liquid.” To integrate into the system “Management of the quality of de-icing fluid” - on the basis of knowledge bases about THE POJ introduced as a functional concept “The quality of de-icing liquid at the POO stage”. In order to introduce information software support for the POO process using databases and control systems, the concept of “Regeloscopic Ground De-Icing Protection Program of the Armed Forces” has been introduced, which will allow and move to an effective method of improving the quality of the service - integrated automation of the POO.

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“…In practice, gutters of various cross sections are used: rectangular, Vshaped, U-shaped, semicircular, etc. Each of them has different formulas for calculating p and F [4].…”

Section: Rectangular Guttermentioning

confidence: 99%

Mathematical model of fluid flow along a straight through filled with a distributed flow from above

et al. 2023

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In a one-dimensional approximation and in the absence of friction forces, a mathematical model has been developed for the steady flow of an incompressible fluid along a straight line, for example, a drainage gutter, into which a distributed flow flows from above. The boundary condition missing for solving the system of equations of momentum and continuity is determined using the principle of minimum potential energy. For a rectangular chute, equations are obtained that allow one to calculate the distributions of the layer thickness and fluid velocity along the length of the chute with a plug at one end and without a plug, slope and without slope to the horizon, depending on the intensity of the incoming flow, the size of the chute, and the density of the liquid. This model, by means of a simple recalculation, can also be extended to the flow in a trough of a different cross-sectional profile. The results of the study can be applied to the calculation of external drainage systems.

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Method of Calculating A Priori Reliability of Elements of Complex System

Cited by 25 publications

References 8 publications

Relaxation patterns of technological residual voltage in the surface layer of high-strength steel when cyclically loaded

Relaxation patterns of technological residual voltage in the surface layer of high-strength steel when cyclically loaded

Application of automated systems for quality control of ground anti-icing treatment of aircraft

Mathematical model of fluid flow along a straight through filled with a distributed flow from above

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