Wyniki wyszukiwania - BazTech

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Selected case studies regarding research-based education in the area of machine and civil assemblies

Wdowik Roman, Litwin Paweł, Bełzo Artur, Borowiec Artur, Magdziak Marek, Ciecińska Barbara, Markopoulos Angelos, Azarhoushang Bahman, Hojati Faramarz

Technologia i Automatyzacja Montażu

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2023

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nr 1

44--53

EN

The paper presents selected case studies in the area of research and teaching activities focused on technical assemblies. The aim of the work is to discuss the current trends in assembly-related research activities in partner universities of the EDURES project and to present teaching methodology related to the research. Due to the great importance of research-based education for innovative teaching methodology, research utilization into teaching process is addressed in the paper as a priority of modern teaching, which uses digital platforms and is focused on fast dissemination of the research results among both researchers and higher education students.

PL

Artykuł przedstawia wybrane zagadnienia dotyczące problematyki złożeń w obszarze badań i nauczania. Celem pracy jest przedstawienie bieżących trendów badawczych dotyczących złożeń, które istnieją w uczelniach partnerskich projektu EDURES i metodyki nauczania w tym zakresie. W artykule podkreślono duże znaczenie edukacji opartej na badaniach naukowych oraz wykorzystania różnych platform cyfrowych i szybkiego upowszechniania wyników badań zarówno wśród badaczy jak i studentów uczelni wyższych.

2

Research-based technology education - the EDURES partnership experience

Wdowik Roman, Magdziak Marek, Dzierwa Andrzej, Ciecińska Barbara, Podulka Przemysław, Litwin Jolanta, Bełzo Artur, Borowiec Artur, Nazarko Piotr, Wiater Agnieszka, Markopoulos Angelos, Hojati Faramarz, Azarhoushang Bahman, Pushchak Iryna, Romanini Mariaelena

Technologia i Automatyzacja Montażu

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2023

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nr 3

45--56

EN

The paper presents the state regarding practices in teaching at partner universities of the EDURES project and current approaches supporting research-based education. It also presents the needs of various groups of stakeholders formulated on the basis of survey results. Moreover, the paper proposes tools and strategies which are useful if research results are implemented in teaching programmes at technical universities (research-based lectures, e-learning, web portal methodologies, wizards, etc). It is finally stated that research-results implementation into teaching processes is possible by the use of various tools and approaches proposed by the EDURES partnership and has the potential to be appreciated by students, academics and external stakeholders.

PL

Artykuł przedstawia opis zagadnienia dotyczącego nauczania opartego o wyniki badań oraz aktualnie stosowane praktyki partnerów projektu EDURES. Przedstawiono potrzeby interesariuszy na podstawie wyników ankiet. Przedstawiono także narzędzia i strategie użyteczne podczas wdrażania wyników własnych badań w programach nauczania na uczelniach technicznych (wykłady oparte na wynikach badań, e-learning, metodyka portalu badawczego, narzędzia internetowe). Należy stwierdzić, że wdrażanie wyników badań w procesach nauczania jest możliwe przez zastosowanie różnych narzędzi i w oparciu o różne strategie, które zostały opracowane w ramach projektu EDURES i mogą być potencjalnie docenione przez studentów, akademików i zewnętrznych interesariuszy.

3

The use of quality management tools to ensure safe working conditions at CO2 laser workstations

Ciecińska Barbara, Oleksiak Beata

Production Engineering Archives

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2023

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Vol. 29, Iss. 4

393-400

EN

Dynamic development of various technologies replacing existing, difficult or in various ways arduous, is the reason for replacing equipment with modern ones. New equipment may be associated with a different power supply, a different way that the construction materials are processed or the tools used, than the previous one. Then arises a need to re-examine whether the working conditions at a workplace are safe, what onerous and hazardous factors are associated with the work. An example of such a technological change could be a laser processing, when equipment using a concentrated energy stream, properly controlled, produces a specific effect on materials. However, along with the benefits of the new technology, come also many risks, such as the effects of radiation on matter and the human body, electricity, fire hazards, the problem of toxic emissions and others. This paper presents the problem of ensuring work safety at a newly commissioned CO2 laser station. Technique of brainstorming was used to identify and analyze the working conditions and types of hazards. These may be different from what was previously known, partially known, or even unconscious. Ishikawa diagram was developed and shown to be an effective tool for detailing and structuring problems in relation to safety. In the case of a technical problem, a poka-yoke solution to eliminate the hazard was proposed. Problems occurring at the workstation during machining and related to its operation were assigned, using the affinity diagram, to specific departments of the company, according to its work organization, which can significantly facilitate the management of the work and employees of the different departments in the future, in order to ensure safe and hygienic working conditions.

4

Analysis of the Possibility of Introducing the Reduction of Changeover Time of Selected CNC Machines Using the SMED Method

Oleksiak Beata, Ciecińska Barbara, Ołów Piotr, Hordyńska Małgorzata

Production Engineering Archives

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2023

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Vol. 29, Iss. 1

83--93

EN

The paper presents the results of improving the production process using the SMED method. The process improvement was carried out in a company in the construction industry, using a machine park consisting of CNC machines. The study evaluated the current state of changeover times for selected CNC machines and proposed a reduction in changeover times for the machine park analysed. By in-troducing changes to the changeover process on selected CNC machines, it was possible to minimise the changeover time by more than 20% on all the machines analysed. The proposed reorganisation of the CNC operators’ workstations resulted in a time reduction of approximately 61% for machine 1, 52% for machine 2 and 12% for machine 3. The installation of barcode readers on the profiles, on the other hand, made it possible to load the machining programmes into the CNC machines more quickly and resulted in a reduction in loading time of approximately 88% on average for each of the machines analysed.

5

Hazard, risk assessment and safety management in workstations with lasers – theoretical and practical studies

Ciecińska Barbara, Oleksiak Beata, Furtak Julia

Zeszyty Naukowe Akademii Morskiej w Szczecinie

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2022

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nr 72 (144)

183--192

EN

Hazard identification and occupational risk assessment, defined as the probability of occurrence of unfavorable work-related events, is one of the areas of activity for employers in relation to current legislation and standards. Using occupational risk assessment it is possible to design and use workstations properly, respecting workers’ health. This article presents an issue related to the use of workstations with laser equipment, which describes the nature of work of lasers and the specific impact of the laser beam on the material. The subject of the analysis is the workstations with a CO2 laser for cutting polymers and a workstation with a fiber laser for marking and engraving. For the above-mentioned workstations, using a designed checklist, the features of lasers are verified, hazards are identified, and occupational risk is estimated using the risk graph method. The estimated risk at selected workplaces with lasers clearly indicated that special attention should be paid not only to the device, and the negative impact of their laser beam on the human body, but also on the treated materials. The article also draws attention to protective measures, which should be applied at laser workstations to ensure the safety of employees.

6

Experimental studies of the possibility of laser processing as a cleaner method of achieving a surface with good adhesion

Ciecińska Barbara

Production Engineering Archives

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2022

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Vol. 28, Iss. 3

233--240

EN

In manufacturing processes many technological operations are designed, in which the adhesive properties of the treated surface are very important. These are processes related to application of any coating on the surface, such as gluing, painting, varnishing and others. Durability of coatings depends on proper preparation of the surface to which they are going to be applied. Conventional methods, such as grinding, sandblasting with subsequent washing and degreasing, as well as galvanic treatment applied to e.g. aluminium alloys - require the use of not only specific equipment but also chemical substances. They often lead to a significant burden on the environment due to their harmful properties. In an experimental study, attention was drawn to the significant environmental aspects of such a technological process and work was carried out to demonstrate whether it is possible to eliminate toxic and hazardous substances and to create good adhesion conditions by laser processing. To this purpose, samples were made out of two representative materials: X6Cr17 steel and AW-2024 aluminium alloy, abrasive surface treatment or in a galvanic bath and then washed, degreased and dried. Laser surface treatment without the use of additional chemicals was proposed as an environmentally cleaner technology. Surface roughness and adhesion of the test polymer coating were measured for comparative evaluation of the applied treatment methods. Obtained results were discussed in terms of the possibility of eliminating harmful influences and implementing laser treatment as a cleaner technology in the production of components requiring coating.

7

Optymalizacja warunków przecinania laserowego polipropylenu i polipropylenu z dodatkiem talku

Cienka Agnieszka Edyta, Ciecińska Barbara

Physics for Economy

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2021

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Vol. 4

17-27

PL

Przecinanie laserem materiałów wymaga wykonania prób obróbki i wyboru najkorzystniejszego wariantu z punktu widzenia przyjętych kryteriów oceny jakości procesu. W pracy przedstawiono przykład procesu przygotowawczego, z którego wynika, że przecinanie polipropylenu i polipropylenu z talkiem o grubości 5 mm nie jest łatwą obróbką. Wykorzystano laser CO2 i różnicując wykorzystaną moc lasera oraz prędkość przesuwu wiązki względem materiału uzyskano przecięcia materiału o zróżnicowanej jakości. Zaproponowano także kryteria wyboru najlepszego wariantu obróbki. Stwierdzono, że dodatek talku do polipropylenu może być czynnikiem ułatwiającym wykonanie cięcia laserem tego tworzywa.

8

Optimization of laser cutting conditions of polypropylene and polypropylene with talc

Cienka Agnieszka Edyta, Ciecińska Barbara

Physics for Economy

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2021

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Vol. 4

5-15

EN

Laser cutting of materials requires the execution of processing tests and the selection of the most favourable variant from the point of view of the adopted criteria of process quality assessment. This paper presents the example of a preparatory process, which shows that cutting polypropylene and polypropylene with 5 mm thick talc is not an easy process of material handling. A CO2 laser was used and by varying the utilized power from the laser and the beam speed relative to the material, cuts of varying quality were obtained. Criteria were also proposed for the selection of the best processing variant. It was concluded that the addition of talc to polypropylene can be a factor facilitating laser cutting of this material.

9

Problems of Quality Assurance and Selection of Control Criteria in Laser Cutting Operations of Wood and Wood-Like Materials

Sobolewska Aleksandra, Ciecińska Barbara

Multidisciplinary Aspects of Production Engineering

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2021

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Vol. 4, Iss. 1

142--152

EN

The paper presents the problem of quality assurance of the laser cutting process of wood and wood-like materials and the selection of optimal processing conditions with respect to the required evaluation criteria. An experiment conducted to identify processing difficulties and potential causes of defects is described. Samples of three materials: pine wood, hardwood plywood and mixed wood HDF with a thickness of 4 mm were cut with a CO2 laser and visually inspected and the width of the slit was measured. It was found that there was a relationship between the laser operating parameters and the obtained slit width. The higher the cutting speed, the narrower the slit. The obtained numerical results allowed to formulate technological guidelines on the selection of laser parameters depending on the material. In turn, based on the visual inspection, defects depending on the material properties were identified. An example of a non-conformity identification manual was developed, which includes illustrations to enable comparative analysis in production. It was found that in the studied process, different criteria can be adopted to qualify a product as compliant or non-compliant. A dilemma may then arise as to which criterion is more important. Therefore, a quality evaluation criteria verification sheet was proposed. Furthermore, due to the fact that the success of the laser cutting process is also dependent on other factors, a list of risks to the process was made.