Wyniki wyszukiwania - BazTech

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Modernisation of the workplace as a result of the outbreak of the pandemic

Kania A., Polok-Rubiniec M., Włodarczyk-Fligier A.

Journal of Achievements in Materials and Manufacturing Engineering

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2023

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Vol. 118, nr 2

69--77

EN

Purpose of this paper is to propose modernisation activities, including the improvement of machines and devices that will increase work safety during the epidemic state for the workplace of an injection moulding machine operator in a selected manufacturing company. Design/methodology/approach In the work brief analyses of a production line and a workplace of an injection moulding machine operator were carried out. Then the threats that occur at the analysed workplace were identified. The risk assessment was done using three methods: matrix according to the PN-N-18002:2011 standard, Risk Score and PHA. Findings The results of the occupational risk assessment obtained by the three assessment methods were similar and gave similar results. The greatest and unacceptable risk has occurred for the threat of SARS-CoV-2 virus infection. Therefore, the following modernisation solutions were proposed: the introduction of mandatory epidemiological questionnaires, online training for company employees, the use of a three-axis robot, replacement of traditional disinfection dispensers with automatic ones. Practical implications The results of re-assessing the occupational risk after introducing the proposed improvements showed that the occupational risk was significantly reduced – mainly to the low or very low levels. Originality/value The proposed modernisation solutions at the workplace of an injection moulding machine operator can be used for each workplace and each epidemiological state.

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The possibility of using wood fiber mats in products manufacturing made of polymer composites based on numerical simulations

Frącz W., Janowski G., Ryzińska G.

Applied Computer Science

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2017

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Vol. 13, no 4

65--75

EN

In this work the calculations for predicting the properties of wood fiber mats – polyester resin composite using numerical homogenization method were performed. For this purpose, the microstructural strength properties were calculated using DIGIMAT FE commercial code. In addition, for com-parative purposes a calculation of polyester resin – glass fiber composites was conducted. This allowed to compare the properties of two types of com-positions. In addition, the obtained strength properties were used to simulate the work of product made of these composites. This study was performed using the Ansys commercial code. Usability of the polyester resin – wood fiber mat composite and knowledge of its properties will allow to find a correct application of this composite type and can provide an alternative way to other polymeric resin reinforced by mat.

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Wytwarzanie kompozytów o strukturze reokast jako proces inteligentnego wytwarzania materiałów

Białobrzeski A., Rabczak K.

Archiwum Odlewnictwa

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2004

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R. 4, nr 11/1

41--46

PL

Przedstawiono w ujęciu schematycznym opis procesu powstawania struktury reokast z zastosowaniem koncepcji imteligentnego wytwarzania materiałów IPM (Intelligent Processing of Materials). Podstawowym elementem systemu jest moduł dynamikimateriału, reprezentujący matematyczne modele procesu, pozwalające przewidzieć ewolucje stanu materiału wczasie procesu zmierzającego do osiągnięcia docelowegostanu materiału, który zapewnia powstanie struktury reokast w stopie. Opisano również etapy realizacji systemu wspierającego proces powstawania struktury reopast.

EN

The necessary conditions for implementation of intelligent processing to the rheacast structure formation process is presented. The basic element of IPM concept is the description of the materials dynamics. It represents the mathematical models of the process, which help predict the microstructural evolution of the material towards the goal-state during processing. The sequence of stages to realize the aid process system for the rheocast structure formation process is described.

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Zastosowanie metody cyklicznego wyciskania ściskającego (CWS) do wytwarzania materiałów o niekonwencjonalnych właściwościach (część II).

Richert M., Richert J.

Inżynieria Materiałowa

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2001

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R. XXII, nr 2

73-79

PL

W pracy przedstawiono badania nad zastosowaniem metody cyklicznego wyciskania ściskającego (CWS) do wytwarzania materiałów o cechach nanostruktur oraz do bezspiekowego łączenia materiałów proszkowych. Otrzymanie materiałów o szczególnych właściwościach i nietypowej budowie mikrostruktury było możliwe dzięki znacznemu przekroczeniu konwencjonalnego zakresu odkształceń plastycznych. Uzyskane wyniki wykazały, że duże odkształcenia plastyczne są związane z magazynowaniem energii, która stanowi siłę napędową zachodzących zmian mikrostruktury.

EN

The investigations for application of the cyclic extrusion compression (CEC) method to the production of materials with nanomaterials features and powder materials obtained without ealier sintering were presented in the work. Materials with special properties and unconventional building of microstructure could be achieved due to considerably exceed of plastic deformations, more above the conventional range possible to obtain by using the typical methods of plastic working. The obtained results shown, that the accumulation of large unit plastic deformations, involving the storage of strain energy, was the driving force of took place microstructural changes.

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Europejskie normy badań nieniszczących stosowane w technologiach wytwarzania materiałów i wyrobów

Wiśniewski G.

Dozór Techniczny

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1999

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z. 3

63--67