Кафедра систем якості, стандартизації та метрології (ДМетІ)

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UK: Кафедра систем якості, стандартизації та метрології (Дніпровський металургійний інститут, ДМетІ) EN: Department of Quality Systems, Standardization and Metrology (DMetI)

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Browsing Кафедра систем якості, стандартизації та метрології (ДМетІ) by Author "Bondarenko, Oksana A."

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    Determination of Particular Relative Reduction in Cold Rolling of Thin and Extra Thin Strips to Implement the Process with the Least Force
    (National Academy of Sciences of Ukraine, Publishing House Akademperiodyka, 2022) Vasilev, Ya. D.; Samokish, D. N.; Bondarenko, Oksana A.; Mospan, N. V.
    ENG: Introduction. It has been theoretically established and experimentally confirmed that the elastic deformations of rolls and strips in cold rolling have a significant and, in the case of thin rod rolling, a crucial effect on all process parameters. Problem Statement. The influence of the elastic-plastic interaction of a thin strip with rolls, the tension, the temperature and rate of deformation, and the strength of strip material shall be taken into account for developing a modern theory of longitudinal cold rolling. Purpose. Modeling and forecasting the parameters of cold rolling of thin and extra thin strips. Materials and Methods. To solve this problem, the conditions of rolling strips made of 08kp steel with different degrees of preliminary metal hardening, which reflected the features and regularities of hardening the strip material in the multicellular state line, have been modeled. The partial relative reductions vary within 0.02—0.35, with the initial data corresponding to the most characteristic conditions of cold rolling of thin and extra thin steel strips on operating mills taken. Results. The quantitative data on the influence of the strip thickness, at the entrance to the deformation zone, partial and preliminary relative reduction during cold rolling on the process conditions with the least force. For the first time, the conditions and range of partial relative reductions for the cold rolling process of thin and extra thin strips with the least force have been determined. It has been established that in the case of cold rolling of thin and extra thin strips made of unriveted and pre-hardened steel, varying partial relative reductions within the range from 0.1 to 0.30—0.35 provides the realization of process with the least force. Conclusions. The implementation of cold rolling process with the least force is advantageous in terms of energy saving and manufacturability, as it allows reducing the specific consumption of electricity and expanding the range of cold rolling mills for smaller thicknesses of rolling strips and indicates the need to determine conditions for such a process.
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    Personnel Qualimetric Assessment of the Consumer Information Center of Insurance Organization
    (ПП «ТЕХНОЛОГІЧНИЙ ЦЕНТР», 2021) Dolzhanskiy, Аnatoliy M.; Bondarenko, Oksana A.; Vusatenko, Тatyana
    ENG: Purpose. The object of the study was the system for assessing the quality of the information service personnel of the insurance company. When determining the approaches to improving the relevant components of the quality system, the organization took into account that the personnel assessment process is the most painstaking, complex and lengthy aspect of the firm’s activities. Mistakes in such a matter can not only cost one person’s dissatisfaction, but affect a certain number of problems regarding the stable functioning of an entire institution. The complexity of this issue lies in the absence, in general, of universal quantitative assessment criteria and the strong influence of the «human factor», which necessitates the use of expert qualimetric approaches with an increase in the objectivity of the assessment. Methodology. The work was aimed at developing an objective system for assessing personnel on the example of the information service of one of the insurance companies in Ukraine using qualimetric methods. Findings. Tools for the integrated qualimetric assessment of the quality of the information center employees’ activities, which consist in determining of the appropriate list and significance of the personnel performance quality indi¬cators, were proposed with an analysis of the possibility of their identification and measurement. Additionally, it is recommended to take into account independent control using «mystery shopper», as well as the self-esteem of workers. Originality. The obtained results were used in the development of the Methodology (Procedure) of the quality system for the assessment of activities and personnel certification. The use of the outlined approaches makes it possible to increase the level of satisfaction of customers and consumers of insurance services, to increase the economic efficiency of the organization’s activities, to differentiate personnel by the quality of work with appropriate per¬sonal encouragement for training, self-realization and work productivity. Practical value. The deliverables may be useful to organizations in the relevant domain and may be applicable in other similar settings.