Classification indicators of maintainability of technical systems

Amosov, A. G.

doi:10.1063/5.0071519

Cited by 27 publications

(9 citation statements)

References 5 publications

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“…4. Based on the processing of experimental data, it was found that the ratio of Ra to Rz on parts obtained by laser additive sintering is 1/6, which slightly differs from the ratio established by GOST 2789-59 [26][27][28][29][30][31][32]. This confirms the possibility of assessing the roughness of such parts in accordance with this standard.…”

Section: Discussionmentioning

confidence: 78%

Predictive Modelling of Surface Roughness in Layered Manufacturing Using H15N5D4B and KH28M6

Ripetskiy,

Mikhailova,

Fedoseev

et al. 2023

E3S Web of Conf.

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Layered manufacturing (LM) technology has the capability to fabricate 3D physical models efficiently, overcoming the limitations of geometric complexities. However, the surface quality of LM-processed parts often falls short compared to parts made through traditional numerically controlled manufacturing technology. This issue of surface roughness has become a significant concern, despite the numerous potential advantages offered by LM. To address this, an elaborate methodology is proposed to predict the surface roughness of LM-processed parts. The proposed methodology takes into account both theoretical and real-world characteristics of surface roughness distributions to accurately reflect the actual roughness distributions in the predictions. This methodology was tested and used to evaluate properties of the H15N5D4B and KH28M6 materials. To achieve this, a design of the testing sample was developed, and a roughness distribution expression was introduced, utilizing measured roughness data from the aforementioned sample. This expression allows engineers to obtain surface roughness values for all surface angles, i.e., desired 3D models. The methodology also includes a prediction application, which demonstrates the validity and effectiveness of the proposed approach through several application examples.

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Section: Discussionmentioning

confidence: 78%

Predictive Modelling of Surface Roughness in Layered Manufacturing Using H15N5D4B and KH28M6

Ripetskiy,

Mikhailova,

Fedoseev

et al. 2023

E3S Web of Conf.

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“…The binding energy of silicon and oxygen Si-O reaches 450 kJ/mol, significantly exceeding the binding energy in C-C carbon chain polymers. Siloxane rubbers are obtained by hydrolytic polycondensation of silane diols or polymerization of cyclosiloxanes [5,6].…”

Section: Siloxane Rubbersmentioning

confidence: 99%

Climatic features of the use of special elastomers with high heat resistance in agricultural machinery

Golikov

2022

IOP Conf. Ser.: Earth Environ. Sci.

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In agriculture and the production of agricultural machinery there is a great demand for materials with high resistance to temperature effects. A special place is occupied by seals, because the characteristics of power units, their reliability, and the possibility of using them in certain conditions largely depend on their quality. The heat resistance of elastomers used as sealants in agricultural machinery is the ability to maintain performance to ensure sealing of joints when exposed to high temperatures for a long time. Heating initiates accelerated thermal aging, which causes a few polymer-destroying processes, while the most important material indicators, such as elasticity, strength, wear resistance, etc., change for the worse. The possibility of operating rubber seals at elevated temperatures is mainly determined by the composition and structure of the polymer.

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“…• Hybrid (mixed) -high-temperature electrolysis, thermochemical water splitting, photoelectrochemical method. A systematic analysis with consideration of production methods [5] in terms of eliminating dependence on non-renewable resources, increasing efficiency and reducing the amount of waste as much as possible will clean up the entire technological chain from beginning to end without reducing their reliability [6,7]. The analysis is carried out on the basis of compliance with the principles of "green chemistry":…”

Section: Technologies and Guiding Principlesmentioning

confidence: 99%

Hydrogen production and green chemistry

Sidorenko

Kutkina

Назарова

et al. 2022

J. Phys.: Conf. Ser.

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This paper presents a study on the production of hydrogen and “green chemistry”. The introduction introduces the terminology and historical data, followed by the defining principles that describe hydrogen production methods using natural gas, coal, water and biomass as feedstock. Some basics of “green chemistry” are also given. The next section provides an analysis of all hydrogen production methods, the results of the analysis are recorded in a table that allows you to identify the most environmentally friendly solutions. In the conclusion it is stated that the results of the study indicated in the table make it possible to assess the compliance of each of the 13 methods for producing hydrogen with the principles of “green chemistry”, and the assessment and comments do not take into account the economic component of technologies, the main emphasis is on environmental protection.

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Classification indicators of maintainability of technical systems

Cited by 27 publications

References 5 publications

Predictive Modelling of Surface Roughness in Layered Manufacturing Using H15N5D4B and KH28M6

Predictive Modelling of Surface Roughness in Layered Manufacturing Using H15N5D4B and KH28M6

Climatic features of the use of special elastomers with high heat resistance in agricultural machinery

Hydrogen production and green chemistry

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