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Wyszukujesz frazę "Wiecek, B." wg kryterium: Autor

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    Wyświetlanie 1-12 z 12
    Tytuł:
    Performance analysis of dual-band microbolometer camera for industrial gases detection
    Autorzy:
    Więcek, P.
    Więcek, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/114214.pdf
    Data publikacji:
    2018
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    wide-band microbolometer detector
    IR spectral transmission and absorption
    configuration factors
    IR absorption of methane
    Opis:
    In this paper we present a simplified performance analysis of wide-band microbolometer cameras for gas detection. The spectral characteristics of camera’s elements such as detector, lens and filter were considered in this analysis. The parasitic radiation of IR filter that diminishes the contrast was included in the model. The exemplary results are presented for methane detection both in MWIR and LWIR bands of absorption
    Źródło:
    Measurement Automation Monitoring; 2018, 64, 4; 90-94
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Practical assessment of accuracy of thermographic indirect measurements
    Autorzy:
    Pacholski, K.
    Więcek, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/114508.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    errors and uncertainty
    infra-red (IR) thermography
    emissivity metallurgy
    slag
    Opis:
    : In this paper, the basis of error and uncertainty assessment for thermographic measurement of temperature is presented. An engineering simplified analytical approach of determining the coverage coefficient is described for different number of thermal images taken into analysis and different contributions of A and B-type of uncertainties. In the form of an example, the entire procedure of uncertainty assessment was used for emissivity. The exemplary calculus are presented for emissivity in LWIR spectral range.
    Źródło:
    Measurement Automation Monitoring; 2015, 61, 6; 278-281
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermal modeling and RMS current measurement in electrical power lines using IR thermography
    Autorzy:
    Torzyk, B.
    Więcek, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/114450.pdf
    Data publikacji:
    2018
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    RMS electrical current measurement
    heat transfer modeling
    overhead power lines
    IR thermography
    Opis:
    Thermal modeling in frequency domain and experiments using IR thermography are performed to evaluate RMS current in electrical power lines. The model implements interface thermal resistance between the metal core and insulation layer. This allowed matching the results of simulations and measurements with acceptable accuracy. The proposed method requires the use of known values of heat transfer coefficient and thermal parameters of the cable and its insulation. In consequence the proposed method requires calibration.
    Źródło:
    Measurement Automation Monitoring; 2018, 64, 3; 53-56
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A simplified model of parasitic radiation in IR bolometer camera
    Autorzy:
    Strąkowski, R.
    Więcek, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/973071.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    radiation model
    configuration factor
    uncooled camera
    residual non uniformity
    heat exchange
    Opis:
    This article presents the impact of thermal radiation of the internal elements of the camera on temperature and its distribution on the bolometers of the Focal Plane Array. In order to estimate the effect of this component, a simplified radiation heat transfer model was created for the detector, the object and the camera housing. The model is based on the known term of radiation configuration factors. It was also suggested to use a radiation screen to isolate the detector from the influence of the camera housing. Finally, results of numerical simulations for different camera work conditions are presented.
    Źródło:
    Measurement Automation Monitoring; 2017, 63, 3; 94-97
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Low-cost IR system for thermal characterization of electronic devices
    Autorzy:
    Kopeć, M.
    Więcek, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/114060.pdf
    Data publikacji:
    2018
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    thermal impedance
    Foster network
    thermal time constants
    temperature measurement
    Opis:
    In this article, a Low-cost measurement Infra-Red (IR) system for dynamic thermal testing of electronic devices is described. The element is powered by a step-function current and simultaneously temperature is measured by a fast single-detector IR head. The thermal impedance Zth(jω) is calculated using the Laplace transform and the Foster network is to get thermal time constants distribution.
    Źródło:
    Measurement Automation Monitoring; 2018, 64, 4; 103-107
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of Software-Defined Radio for Rayleigh and Raman Scattering Measurement in Optical Fibers
    Autorzy:
    Shatarah, I. S. M.
    Więcek, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/114286.pdf
    Data publikacji:
    2018
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    Rayleigh and Raman scattering
    synchronous detection
    silica optical fiber
    optical frequency domain reflectometry
    Opis:
    A laboratory system for measuring the Raman scattering light in optical fiber is presented. The system is equipped with the developed driver for 5 mW/1550 nm laser diode, optical circulator, WDM filters to separate Rayleigh and Raman scattered light and InGaAs cooled photodiode to detect the weak scattered radiation. Instead of using expensive network analyzer we propose to use Software-Defined Radio, which ensures the necessary sensitivity and selectivity of detected signals. The preliminary results are presented for about 3 km – length single mode silica optical fiber.
    Źródło:
    Measurement Automation Monitoring; 2018, 64, 4; 112-115
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of thermal impedance and wavelets analysis for non-destructive testing
    Autorzy:
    Kopeć, M.
    Kałuża, M.
    Więcek, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/114695.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    nondestructive testing
    thermography
    T3Ster analysis
    wavelet analysis
    Opis:
    This paper presents a comparison of two methods used for non-destructive testing: thermal impedance (Zth) and wavelet transform (WT). The transient heating process of a textolite plate with defects was measured using a thermographic camera. Based on the measurement results, a qualitative and quantitative assessment of material structure was performed. The measured parameters describing the geometry of the tested material were temperature, time constant, angular frequency and phase. The presented results of thermographic measurements and their analysis indicate the possibility of detection of subsurface defects using both presented methods. The convergence and the correlation between results obtained using thermal impedance and wavelet methods are presented.
    Źródło:
    Measurement Automation Monitoring; 2015, 61, 6; 223-227
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermal Characterization of High-Frequency Flyback Power Transformer
    Autorzy:
    Kasikowski, R.
    Gołaszewski, J.
    Więcek, B.
    Farrer, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/114581.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    IR thermography
    power losses
    H-F flyback transformer
    thermal impedance
    Opis:
    This paper presents preliminary thermographic measurements and a simple thermal analysis of power losses in high-frequency (H-F) transformers used in AC-DC power converters. The analysis is based on complex thermal impedance and time constant distribution. The main aim of this research was to consider quantitatively the contribution of different power losses in the H-F transformer, including fringing flux effect.
    Źródło:
    Measurement Automation Monitoring; 2015, 61, 6; 237-241
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Detection of inner defects in industrial pipelines using transient IR thermography
    Autorzy:
    Kopeć, M.
    Chatzipanagiotou, P.
    De Mey, G.
    Więcek, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/114312.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    infrared thermography
    transient thermal testing
    defect detection
    polypropylene pipe
    Opis:
    A long time operation of pipelines can lead to the reduction of their wall thickness. This process is accelerated by high temperature and variable pressure of the transported medium and can finally cause mechanical failures along with leaks and danger of explosion. The aim of this paper is to present a new method for the detection of abraded walls in industrial pipelines using the time-frequency analysis. The results of transient temperature measurements are used for the calculation of the thermal time constants corresponding - as demonstrated - to the pipeline wall thickness.
    Źródło:
    Measurement Automation Monitoring; 2017, 63, 3; 115-118
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Convection and radiation cooling of overhead power lines - laboratory verification using thermography
    Autorzy:
    Chatzipanagiotou, P.
    Felczak, M.
    De Mey, G.
    Chatziathanasiou, V.
    Więcek, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/114618.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    overhead power line
    convection
    laminar and turbulent airflow
    radiation
    IR thermography
    Opis:
    The thermal behavior of overhead power lines depends upon physical parameters, such as surface emissivity and line dimensions, as well as weather conditions. In this paper, the results of the convection and radiation cooling of a conductor that simulate a power line are presented. Laboratory experiments were conducted and the results were compared with the data obtained using empirical formulae from the literature. Both the laminar and the turbulent airflow were investigated.
    Źródło:
    Measurement Automation Monitoring; 2017, 63, 3; 107-110
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new software tool for transient thermal analysis based on fast IR camera temperature measurement
    Autorzy:
    Chatzipanagiotou, P.
    Strąkowska, M.
    De Mey, G.
    Chatziathanasiou, V.
    Więcek, B.
    Kopeć, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/114612.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    transient thermal analysis
    IR thermography
    Nyquist plot
    time constants
    cumulative structure function
    Opis:
    A new software tool for transient thermal analysis based on thermographic measurement of temperature is presented. In the proposed approach, temperature change after applying or removing power can be measured by a thermal camera or any contact temperature sensor. The software calculates thermal impedance in frequency domain and represents it in the form of the Nyquist plot. In addition, thermal time constant spectrum and cumulative structure function are evaluated. The software was developed in Matlab environment using in-built procedures for transfer function estimation. For the validation of the proposed tool, the results are compared with ones obtained using commercially available software.
    Źródło:
    Measurement Automation Monitoring; 2017, 63, 2; 48-51
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Various applications of complex thermal impedance for transient and AC heat transfer analysis
    Autorzy:
    Więcek, B.
    De Mey, G.
    Strąkowska, M.
    Chatziathanasiou, V.
    Gmyrek, Z.
    Strzelecki, M.
    Chatzipanagiotou, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/114707.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    thermal impedance
    Nyquist plot
    Laplace transform
    heat transfer
    IR thermography
    Opis:
    This paper presents the concept and three practical examples of using complex thermal impedance for characterisation different thermal objects. The first problem describes estimation time shift between power and temperature in electric distribution systems with non-sinusoidal currents. The second example discussed here, shows the estimation of power losses distribution in the magnetic punched ferromagnetic strips. The third application presents the inverse thermal modelling of 3-layer biomedical objects (tissues) to estimate the thermal parameters. More details of the presented problems are in the appropriate papers of the authors referenced here.
    Źródło:
    Measurement Automation Monitoring; 2015, 61, 6; 210-214
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

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