Wyniki wyszukiwania - BazTech

1

Design and optimization of the construction of a mobile disinfection chamber for small communication devices and small objects

Galík Jan, Varecha Daniel, Drbúl Mário, Madaj Rudolf, Konstantová Viera

Production Engineering Archives

|

2023

|

Vol. 29, Iss. 2

201-215

EN

This manuscript aims to familiarise readers with the development of a device for the construction of a mobile disinfection chamber for small communication devices and small objects. The conceptual design and the material of the new device play essential roles in the design process of a new device. The manuscript presents concepts based primarily on previous experience and different perspectives. The concept design is created in the 3D modelling program CREO Parametric 8.0. A multi-criteria team evaluation determined the most suitable version of the idea. For dimensioning and shape adaptation of the device was used EinScan SP device (3D scanning method). The article's aim was also to establish a suitable way of producing a prototype using tribological research in available production methods and materials within rapid prototyping. Using the ALICONA Infinite Focus G5 device, experimentally investigated the parameters characterising the surface of the parts. The end of the manuscript focused on the mechanical structure and subjecting them to FEM analysis in the program ANSYS Workbench. The design of the concept disinfection device was also for extreme cases of use. Within this issue was optimising shapes, wall thicknesses, reinforcement design and other necessary modifications using the FEM analysis. From the results, the most suitable material to produce a more significant number of parts may not be the most suitable material to create prototype devices. Tools such as 3D scanning, rapid prototyping, and FEM analysis can "significantly" help reduce mistakes before testing the device.

2

Influence of Laboratory Ageing on the Preservation of Anti-graffiti Properties for Paint Systems Used in Rolling Stock

Garbacz Marcin

Problemy Kolejnictwa

|

2022

|

Z. 195

97--116

EN

The article describes and presents the influence of selected ageing mechanisms of paint systems currently used in railways in Poland in the context of maintaining their original protective properties against graffiti. Six paint systems with different types of finish, which had anti-graffiti properties, were tested, and the characteristics of the surface of the paint system, such as gloss and colour, were determined after a series of painting and cleaning of graffiti (markers and sprays). The tested objects were subjected to artificial simulated ageing using laboratory solar radiation in a synergistic combination of temperature and humidity in accordance with PN-EN ISO 16474-2 and in accordance with the proprietary methodology described in DN 001/08/A2/16 section 4.1.8 using the UV-C radiation source (discrete spectrum). The tested samples were also subjected to a different type of ageing mechanism under strong corrosive conditions in the form of neutral salt spray according to the methodology described in PN-EN ISO 9227.

3

Stan higieniczny powietrza w pomieszczeniu obsługiwanym przez instalację wentylacyjną, w której gniazdowały ptaki - studium przypadku

Szczęśniak Sylwia, Trusz Agnieszka

Instal

|

2021

|

nr 10

34--41

PL

W artykule przedstawiono wyniki badań mikrobiologicznych przeprowadzanych w przewodzie wywiewnym, w którym gniazdowały ptaki, w centrali wentylacyjnej oraz w pomieszczeniu, które ta centrala obsługuje. Badania przeprowadzono celem określenia stanu higienicznego powietrza w pomieszczeniu obsługiwanym przez instalację wentylacyjną, w której gniazdowały ptaki oraz w samej instalacji wentylacyjnej. Sprawdzono także skuteczność działania przenośnego urządzenia służącego do dezynfekcji powietrza w pomieszczeniach. Urządzenie to wykorzystuje promieniowanie UV-C o ponadnormatywnej mocy 330 W.

EN

The article presents the results of microbiological tests carried out in the exhaust duct where the birds were nesting, in the air handling unit and in the room it serves. The research was carried out in order to determine the hygienic condition of the air in the room served by the ventilation system in which the birds nested. The effectiveness of a portable device for disinfecting air in rooms, which uses UV-C radiation of overstandard power 330 W, was also tested.