PL
 |
EN
Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 5

Liczba wyników na stronie
first rewind previous Strona / 1 next fast forward last
Wyniki wyszukiwania
help Sortuj według:

help Ogranicz wyniki do:
first rewind previous Strona / 1 next fast forward last
1
Content available remote Impact of micro-stoppages on overall equipment effectiveness measure
Hubicki Rafał, Richert Maria, Łebkowski Piotr, Hubicka Natalia
Zarządzanie Przedsiębiorstwem
|
2020
|
Vol. 23, nr 1
10--15
EN
The basic activity carried out in the aluminium sections manufacturing market is the extrusion process. The large demand for aluminium products makes it very important for entrepreneurs to achieve the highest possible production effectiveness, expressed in product tons manufactured within a unit of time. The recognition of the factors affecting the machine operation time losses is a valuable source of information that creates the opportunity to introduce changes improving production effectiveness. One of the identified factors affecting production effectiveness, specified through the OEE (Overall Equipment Effectiveness) measure, are micro-stoppages, the impact of which is rarely noticeable due to the difficulty in their recording. However, it is extremely important due to the total machine operation time losses. For the purpose of analysing micro-stoppages in selected machines in this paper, the authors used testing tools for the quantitative statistical analysis as well as Pareto charts.
2
Content available Risk in the scope of research and innovative technological projects
Richert Maria, Hubicki Rafał, Łebkowski Piotr, Kulczycka Joanna, Mrotzek-Bloess Asja
Acta Innovations
|
2020
|
no. 34
58--67
EN
Assessment and management of risk constitute the subject of many researches. Nevertheless, many more specific factors are applicable during the implementation of innovative technological projects. On the article identified risk factors, which have been supplemented, systematized and assigned to the individual risk categories. The risk assessment methods for R&D projects have been analysed, as well as the risk sheets have been developed for the R&D project through the use of dotProject application. Also shown that networking and clustering is a change for fruitful cooperation within difference EU projects, which create trust between business and sciences and reduce the risk.
3
Content available The influence of welding method on microstructure and mechanical properties of aluminum alloys joints
Noga Piotr, Richert Maria, Węglowski Marek Stanisław
Metallurgy and Foundry Engineering
|
2019
|
Vol. 45, no. 2
43--50
EN
Rapid technological progress in recent years has led to an intensified interest in alternative methods of joining metals. Today’s industry is constantly demanding new joining processes, which enable high-quality welded joints in a wide range of thicknesses of combined materials at low production cost. There are at least several dozen welding methods currently available. The selection of the process depends on the type of welded materials, acceptable heat input, as well as future working conditions. The paper presents the results of the microstructural examination and mechanical properties of joints of the aluminum alloy for plastic working such as EN AW-6082. The paper presents the results of microstructural observations and mechanical properties of EN AW-6082 aluminum alloy. Methods used for joining were successively TIG (welding with a non-consumable electrode in a shield of inert gases), MIG (welding with a consumable electrode in a shield of inert gases), EBW (electron beam welding) along with FSW (friction stir welding method). TIG (welding with a non-consumable electrode in a shield of inert gases), MIG (welding with a consumable electrode in a shield of inert gases), EBW (electron beam welding) along with FSW (friction stir welding method) were used as joining techniques.
PL
Współczesny przemysł wymaga opracowania i udoskonalania metod, które umożliwiają uzyskanie wysokiej jakości połączeń w szerokim zakresie grubości łączonych materiałów oraz obniżenie kosztu produkcji. Istnieje kilkadziesiąt metod spawania. Proces ten trzeba dostosować do rodzaju spajanych materiałów, dostępnych źródeł energii, a także do przyszłych warunków pracy urządzeń. W pracy przedstawiono wyniki badań łączenia najpopularniejszego stopu do przeróbki plastycznej, jakim jest stop EN AW-6082. Metodami wykorzystanymi do łączenia były zarówno najbardziej popularne techniki spawania: TIG (spawanie elektrodą nietopliwą w osłonie gazów obojętnych), MIG (spawanie elektrodą topliwą w osłonie gazów obojętnych), metoda wysokoenergetyczna EBW (spawanie wiązką elektronową), jak również metoda zgrzewania tarciowego z mieszaniem materiały zgrzeiny – FSW.
4
Content available Naturally parallel measuring system based on FPGA hardware
Długopolski Jacek, Richert Maria
Journal of Machine Construction and Maintenance - Problemy Eksploatacji
|
2019
|
no. 2
113--119
EN
The FPGA (Field Programmable Gate Array) technology, usually a little unnoticeable, almost from the very beginning is developed simultaneously with the microprocessor technology. The possibility for the system designer or end user to influence the internal structure of the integrated circuit gives unattainable possibilities of building plastic and fully massively parallel systems that fit in almost one integrated circuit. This fact allows, among others for building fully parallel multi-point measuring systems. This manuscript presents the architecture proposal for such an FPGA-based exemplary multichannel measurement system and presents the results of its practical use to study the functioning of a tubular heat exchanger in automotive airconditioning.
PL
Technologia programowalnych układów scalonych FPGA (Field Programmable Gate Array), zwykle trochę niezauważana, niemal od samego początku rozwija się równolegle z technologią mikroprocesorową. Możliwość wpływania przez projektanta systemów lub użytkownika końcowego na wewnętrzną strukturę układu scalonego daje nieosiągalne w przypadku zwykłych procesorów możliwości budowania plastycznych i w pełni masywnie równoległych systemów mieszczących się niemal w jednym układzie scalonym. Fakt ten pozwala m.in. na budowanie w pełni równoległych wielopunktowych systemów pomiarowych. W artykule tym pokazano właśnie propozycję architektury takiego bazującego na FPGA przykładowego wielokanałowego systemu pomiarowego oraz przedstawiono wyniki jego praktycznego wykorzystania do badania funkcjonowania rurowego wymiennika ciepła w klimatyzacji samochodowej.
5
Content available Modeling of the impact of construction solutions on operating parameters of the internal heat exchanger with refrigerant R744
Janus Jakub, Skotniczy Przemysław Jan, Richert Maria
Archives of Thermodynamics
|
2019
|
Vol. 40, no 1
145--160
EN
Work on increasing the efficiency of heat exchangers used in car air conditioning systems may lead to a partial change in the construction of refrigeration systems. One of such changes is the use of smaller gas coolers, which directly translates into a reduction in the production costs of the entire system. The article presents the use of computational fluid dynamics methods to simulate the impact of changing the shape of an internal heat exchanger on the cooling efficiency with R744 as the refrigerant. Internal heat exchangers with different geometry of the outer channels were subjected to numerical analysis. The obtained results of calculations show temperature changes in inner and outer channels on the length of the heat exchanger.
first rewind previous Strona / 1 next fast forward last
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.