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Catalog Publications

Year 2024
Year 2023
Year 2022
  • A numerical and experimental analysis of multi-hole orifice in turbulent flow
    Publication

    - MEASUREMENT - Year 2022

    In this research study, the comprehensive metrological analysis is investigated for a 4-hole orifice with module m = 0.25 installed in the pipeline with an internal diameter of 50 mm. A detailed numerical simulation was performed for the turbulence models: k-ε-realizable and k-ω-BSL. The novelties of the research include model validation by comparing the results of numerical studies with the experiment conducted in the area of...

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  • AC Motor Voltage and Audible Noise Dataset
    Publication

    - Year 2022

    The dataset titled AC motor voltage and audible noise waveforms in ship’s electrical drive systems with frequency converters contains the voltage and sound measurement results recorded in a marine frequency controlled AC drive system. The dataset is part of research focussing on the impact of the ship’s electrical drive systems with frequency converters on vibrations and the level of audible noise on ships. The dataset allows the...

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  • Experiment-Based Study of Heat Dissipation from the Power Cable in a Casing Pipe
    Publication

    - ENERGIES - Year 2022

    The paper deals with the important challenges in terms of electricity transmission by means of underground cable lines. The power cable’s performance is characterized by an ampacity that represents its maximum electric current-carrying capacity. The ampacity of power cables depends on their ability to diffuse the heat generated by the current flow into the environment. In the performed research, the analysis of the efficiency of...

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  • Highly Reliable Passive RFID-Based Inductor–Capacitor Sensory System Strengthened by Solvatochromism for Fast and Wide-Range Lactate Detection
    Publication
    • M. R. R. Khan
    • A. Khalilian
    • J. Seo
    • S. Oh
    • A. Thakre
    • T. K. An
    • H. S. Lee

    - IEEE SENSORS JOURNAL - Year 2022

    A passive radio frequency-identification-based inductor-capacitor (LC) lactate sensory system with a specific dye-containing interdigitated capacitor (IDC) in which the sensing signal is amplified by the solvatochromic effect is proposed. When a lactate solution contacts the IDC of the LC lactate sensor, the capacitance of the IDC changes, changing the resonance frequency of the sensor. This changes the oscillation frequency of...

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  • Investigation of Liquid–Gas Flow in a Horizontal Pipeline Using Gamma-Ray Technique and Modified Cross-Correlation
    Publication

    - ENERGIES - Year 2022

    This article presents the application of the radioisotope absorption method in the study of two-phase water–air flow in a horizontal pipe. The measurement principle and the test stand are briefly described. The main part of the article presents the signal analysis methods applied to data obtained from scintillation detectors. Because these signals are mostly stochastic waveforms, they were analyzed statistically using the cross-correlation...

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  • Kazimierz Drewnowski Patronem Roku PTETiS

    Przedstawiono postać Kazimierza Drewnowskiego, Patrona Roku 2021 Polskiego Towarzystwa Elektrotechniki Teoretycznej i Stosowanej. Drewnowski był organizatorem służb łączności w Legionach i Wojsku Polskim, profesorem elektrotechniki, dziekanem Wydziału Elektrycznego Politechniki Warszawskiej i rektorem PW.

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  • Meandry życiowe Henryka Bajduszewskiego

    W artykule przedstawiono książkę Henryka Bajduszewskiego „Moje meandry życiowe”. Zawiera ona pamiętniki spisywane przez autora w czasie II wojny światowej w niemieckim wojsku we Francji oraz w wojsku polskim we Włoszech. Pamiętniki te zostały współcześnie uzupełnione o wspomnienia z czasów młodości, a także nauki i pracy po wojnie.

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  • Measurements of Dispersed Phase Velocity in Two-Phase Flows in Pipelines Using Gamma-Absorption Technique and Phase of the Cross-Spectral Density Function
    Publication

    - ENERGIES - Year 2022

    This paper concerns the application of the gamma radiation absorption method in the measurements of dispersed phase velocity in two-phase flows: liquid–gas flow in a horizontal pipe- line and liquid–solid particles in a vertical pipe. Radiometric sets containing two linear 241Am gamma radiation sources and two NaI(Tl) scintillation detectors were used in the research. Due to the stochastic nature of the signals obtained from the...

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  • Measurements of Two-phase Flows in Pipelines Using Radioisotopes and Statistical Signal Processing
    Publication

    - Year 2022

    This paper presents an application of radiotracers and gamma absorption method in two-phase flow measurements in pipelines. Two different methods were implemented to analysis of acquired signals. Investigated methods are based on the cross-correlation function and the phase of the cross-spectral density distribution. The examples presented in the article illustrate the application of the radioisotopes to evaluation of liquid-gas...

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  • Novel Nonlinear High Order Technologies for Damage Diagnosis of Complex Assets
    Publication

    - Electronics - Year 2022

    For the first time worldwide, innovative techniques, generic non-linear higher-order unnormalized cross-correlations of spectral moduli, for the diagnosis of complex assets, are proposed. The normalization of the proposed techniques is based on the absolute central moments, that have been proposed and widely investigated in mathematical works. The existing higher-order, crosscovariances of complex spectral components are not sufficiently...

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  • Polscy inżynierowie elektrycy w 1936 r.
    Publication

    Na podstawie notek biograficznych ponad 1000 osób przedstawiono stan kadry inżynierskiej w zakresie elektrotechniki w 1936 r. Podano uczelnie, w których wykształcenie zdobywali polscy inżynierowie elektrycy. Omówiono liczbę osób z dyplomem inżyniera elektryka zamieszkujących poszczególne rejony przedwojennej Polski. Podano miejsca pracy w różnych dziedzinach działalności inżynierskiej. Omówiono zaangażowanie w działalność Związku...

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  • Signals Features Extraction in Radioisotope Liquid-Gas Flow Measurements using Autocorrelation Function
    Publication

    - Year 2022

    Knowledge of the two-phase flow structure is essential for the proper conduct of industrial processes. Description of liquid-gas flow regimes is possible by using of data analysis in time, frequency, or state-space domain. In this research studies, the autocorrelation function is applied for analysis of signals obtained for liquid-gas flow by use gamma-ray absorption. The experiments were carried out on the laboratory hydraulic...

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  • Superconductivity and appearance of negative magnetocaloric effect in Ba1–xKxBiO3 perovskites, doped by Y, La and Pr
    Publication
    • P. Pęczkowski
    • M. Łuszczek
    • E. Szostak
    • N. K. C. Muniraju
    • A. Krztoń-Maziopa
    • Ł. Gondek

    - ACTA MATERIALIA - Year 2022

    Recently, substantial attention is given to the bismuth-based perovskites for variety of electronic applications. The perovskites are used for quantum dots displays (QLED), photovoltaic systems and superconducting (HTS) devices. In this paper comprehensive studies of Ba1–xKxBi1–yREyO3 bismuth perovskites (REBKBO, RE = Y , La or Pr) are reported. Apart from structural anomalous behavior at low temperatures, the electronic properties...

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  • The Laboratory Stand for the Evaluation of Heat Dissipation from the Power Cable in a Casing Pipe
    Publication

    - Year 2022

    The current carrying capacity of a power cable determines its efficiency, which depends on its capability to dissipate heat produced inside the cable, as a result of current flow, into the surrounding. The studies were conducted to determine how the characteristics of the medium around the cable affected its temperature and, as a result, its ability to transport electricity. The experimentation in the lab and real measurements...

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Year 2021
Year 2020