dr hab. inż. Grzegorz Lentka | Politechnika Gdańska

W artykule przedstawiono porównanie czterech mikrosystemów operacyjnych czasu rzeczywistego: FreeRTOS, μC/OSIII, Nuttx i Zephyr Project pod kątem wybranych parametrów czasowych dla czterech platform uruchomieniowych opartych na mikrokontrolerach STMicroelectronics: NUCLEOL073RZ, NUCLEOF103RB, NUCLEOF411CE i NUCLEOH743ZI. Opracowana metoda pomiaru i zaproponowane scenariusze testowe umożliwiają ocenę parametrów czasowych mikrosystemów...

The condition of the consumables is a key factor determining the waste reduction in the welding processes and the quality of the welded joint. The paper presents the results of tests of four types of fux-cored wires dedicated for welding high-strength steels, stored for 1 month and 6 months in Poland in two urbanized areas: in a large seaside city (Gdańsk) and in Warsaw, located in the center of the country. The wires were subjected...

This article presents an innovative approach to monitor working redox flow batteries using dynamic electrochemical impedance spectroscopy, diverging from the commonly sequential impedance methods carried out under potentiostatic or galvanostatic conditions close to the open circle voltage. The authors introduce a fresh variation of dynamic impedance measurement that leverages an amplitude-modulated multi-frequency alternating current...

Welding processes involving the use of flux-cored wires are becoming increasingly popular, particularly in shipbuilding as well as in off-shore and civil engineering. The article presents characteristics of the welding process, its areas of application as well as advantages and disadvantages (e.g. necessity of ensuring appropriate conditions for the storage of filler metal wires). The satisfaction of quality-related requirements...

The dataset titled Impedance spectra of RC model as a result of testing pulse excitation measurement method contains the impedance spectrum of an exemplary test RC model obtained using pulse excitation. The dataset allows presentation of the accuracy of the impedance spectroscopy measuring instrument, which uses the pulse excitation method to shorten the time of the whole spectrum acquisition.