Wyniki wyszukiwania - Biblioteka Nauki

1

Polimery w nowym wcieleniu

100%

Wróbel G.

Polimery dla Biznesu

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2022

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tom nr 4

27--29

PL

W artykule przedstawiono studium produktów przemysłowych – sprężyn pierścieniowych, które dzięki nowym rozwiązaniom materiałowym pozwalają poszerzyć obecnie stosowane charakterystyki podobnych elementów konstrukcyjnych wykonywanych z wysokojakościowych stali [1-4]. Własności materiałów polimerowych, w połączeniu z odpowiednio dobraną postacią konstrukcyjną oraz wymiarami, stwarzają szerokie pole dla zastosowań w układach zarówno statycznych jak i dynamicznych, dzięki możliwościom spełnienia różnych kryteriów użytkowych, obejmujących sztywność, deformację, tłumienie drgań, uderzeń, hałasu. Oferują jednocześnie właściwe polimerom zalety odporności na korozję, technologiczności, ale również gęstość masową w porównaniu do stali.

EN

The article presents a study of industrial products - ring springs, which, thanks to new material solutions, make it possible to expand the currently used characteristics of similar structural elements made of high-quality steels [1-4]. The properties of polymeric materials, combined with appropriately selected structural form and dimensions, create a wide field for applications in both static and dynamic systems, thanks to their ability to meet various performance criteria, including stiffness, deformation, damping of vibrations, impacts, noise. At the same time, they offer the inherent advantages of polymers in corrosion resistance, technologicity, but also mass density compared to steel.

2

Characteristics of polymer ring springs

100%

Wróbel G.

Archives of Materials Science and Engineering

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2022

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tom Vol. 114, nr 1

13--23

EN

Purpose: The paper discusses selected aspects of the use of polymeric materials in the construction of ring springs. Design/methodology/approach: Special attention is paid to differences in characteristics of such materials in comparison to springs made of traditional material - steel. Findings: The result of the work is a static-dynamic model of polymer ring springs. An analysis of the influence of friction on the performance characteristics was carried out. The results of the preliminary experimental studies confirm the correctness of the model. Practical implications: Analytical models have been developed, as tools to support the design processes of ring spring structures, in the field of innovative material solutions. They are a tool for the selection of geometric and material characteristics of springs, meeting the set operational expectations. Originality/value: Extensive possibilities in the selection among a group of structural polymer materials allow the formation of structural solutions with a variety of characteristics, both elastic and impact or damping. The area of application ranges from mechanical engineering to construction or transportation. The characteristics complement the possible field of solutions in cases of use of traditional metallic materials, especially high-grade steels. Material solutions make it possible to achieve significant economic effects in addition to unavailable performance characteristics, both static and dynamic. These are due to competitive prices for polymer materials, including composites, and manufacturing costs. They open up a wide field for utility innovations.

3

Load condition analysis of pipe flange connection with gasket flat gasket and loose clamping rings

63%

Wróbel G. , Walczak K.

Journal of Achievements in Materials and Manufacturing Engineering

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2022

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tom Vol. 111, nr 1

5--17

EN

Purpose: This paper describes the study of the connection with loose fixing composite rings of pipe flanges. The elastic properties of the joint components - gasket, pressure flanges, rings and fixing bolts were determined experimentally. Design/methodology/approach: The criterion of joint tightness was formulated. The constructed model was used to determine the analytical dependence of the joint leakage pressure on the assembly torque of bolts tightening. The correctness of the model was confirmed by the agreement of the analytical results with the experimental results. Findings: Quantitative characteristics were determined for the selected type of joint. Practical implications: The formulated conclusions indicate the possibility of using the model to support the design process and to select the structural parameters of the joint meeting the operational requirements and safety criteria. Originality/value: Produced with recycled materials using.

4

Overview of Big Data platforms

63%

Wróbel G. , Wikira M. D.

Journal of Computer Sciences Institute

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2019

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tom Vol. 13

283--287

EN

The primary purpose of this paper is to present and provide main advantages and disadvantages of most popular big data platforms as well as their comparison in terms of ease of installation, work, performance and price, in order to find the most suitable solution to work with big sets of data. Nowadays, the data is largely analyzed by scientists not related to IT, so the ease of use and presentation of data is extremely important. The purpose of the assessment was to indicate the best IT tool for analyzing data from the point of view of a young analyst or scientist graduating and entering the labor market.

PL

Głównym celem niniejszej pracy jest prezentacja głównych zalet oraz wad najbardziej popularnych platform big data, jak również porównanie ich pod względami łatwości instalacji, funkcjonalności, wydajności oraz ceny co pozwoli na wskazanie rozwiązania najlepiej dostosowanego do pracy z dużymi zbiorami danych. W dzisiejszych czasach dane są przetwarzane przez analityków niezwiązanych z branżą IT, w związku z czym bardzo istotne są kwestie łatwości użytkowania i prezentacji danych. Celem oceny jest wyznaczenie najlepszego narzędzia z branży IT dla analizy danych z perspektywy młodego analityka lub naukowca kończącego edukację i wchodzącego na rynek pracy.