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Wyświetlanie 1-15 z 45
Tytuł:
Thermovision measurements of thermal diffusivity
Autorzy:
Wesołowski, M.
Hauser, J.
Powiązania:
https://bibliotekanauki.pl/articles/97383.pdf
Data publikacji:
2014
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
infrared camera
thermal diffusivity measurements
Opis:
The article deals with thermal diffusivity measurements by using of thermovision techniques. Methods for determination of thermal parameters of insulating bodies are time consuming and so that, their utility in industry is inconsiderable. For example such measurements can’t be used for online inspection of product quality. In the article, new method for determination of thermal diffusivity was presented. Basic concept and model of measuring device were discussed. The method is characterized by short measuring time, high accuracy and low dependence on external conditions. Exemplary measuring results were presented and all advantages of proposed method were proved.
Źródło:
Computer Applications in Electrical Engineering; 2014, 12; 572-581
1508-4248
Pojawia się w:
Computer Applications in Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Recognizing the authenticity of the postal envelopes sealing using IR thermography and thickness measurement
Autorzy:
Kopeć, M.
Powiązania:
https://bibliotekanauki.pl/articles/114111.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
envelope
sealing
infrared camera
caliper
microscope
Opis:
This paper presents two methods to recognize authenticity of the postal envelopes sealing. These methods are: infrared thermography and thickness measurement. Additionally, microscope inspection is presented. Based on the results, quantitative assessment was developed. The proposed methods make it possible to recognize authenticity of the postal envelopes sealing.
Źródło:
Measurement Automation Monitoring; 2017, 63, 3; 111-114
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Use of Matlab Package for External Local Calibration of IR Camera with Microbolometric FPA Detector
Autorzy:
Kruczek, T.
Adamczyk, W.
Kruczek, G.
Powiązania:
https://bibliotekanauki.pl/articles/114419.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
thermovision infrared measurements
improvement of accuracy of infrared camera measurements
Opis:
This work presents the method of improving the accuracy of temperature measurement results obtained by means of long-wave infrared camera equipped with focal plane array (FPA) detector. The typical accuracy of infrared cameras specified by their manufacturers amounts to ±2 K or ±2% of the measured value of temperature. Very often a better accuracy of the measurements is required, e.g. during the measurements of human body temperature. To improve the measurement accuracy an external local (in terms of temperature range) correction of obtained results on the basis of comparison measurement results of black body temperature and next with use of MATLAB package has been proposed.
Źródło:
Measurement Automation Monitoring; 2016, 62, 10; 337-340
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The infrared measurement method in the air in small closed areas
Autorzy:
Pešek, M.
Powiązania:
https://bibliotekanauki.pl/articles/402300.pdf
Data publikacji:
2013
Wydawca:
Politechnika Świętokrzyska w Kielcach. Wydawnictwo PŚw
Tematy:
temperature field
infrared camera
small closed space
transmissivity
Opis:
The article is focused on the infrared measurement method in the air in small closed areas. This method is based on the visualization of temperature fields on an auxiliary material which is inserted into the non-isothermal air flow in a research area. In small closed spaces where is impossible to put the measuring equipment due to various reasons, it is necessary to visualize the temperature fields through a window. This window must be permeable for infrared radiation of known properties, especially the transmissivity. As an auxiliary material for the visualization of temperature fields in these experiments, the ordinary office paper with high emissivity value was chosen and the viewing window was made of a polyethylene. The presented method for the measurement of temperature fields in the air can be applied mainly in closed spaces where is difficult to situate the infrared camera (due to field of view), in spaces where the infrared camera restricts the flowing air or where is aggressive or too hot environment (a potential damage of infrared camera), etc. In this article the parameter analysis, which is important for a particular application, is performed and an example of temperature fields measurement in closed space is presented. This method can be used in cooling and heating design of means of transport, mostly for cabins of cars and trucks.
Źródło:
Structure and Environment; 2013, 5, 3; 33-36
2081-1500
Pojawia się w:
Structure and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza temperatury docierarki jednotarczowej
Analysis of temperature of single disk lapping machine
Autorzy:
Barylski, A.
Powiązania:
https://bibliotekanauki.pl/articles/313454.pdf
Data publikacji:
2018
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
docieranie
temperatura
pomiary termowizyjne
lapping
temperature
infrared camera measurement
Opis:
W artykule przedstawiono wyniki badań docierania powierzchni płaskich na docierarce jednotarczowej. Praca stanowi wstęp do badań zagadnienia wzrostu temperatury elementów układu wykonawczego obrabiarki. Eksperymenty przeprowadzono na docierarce jednotarczowej ABRALAP 380 przy użyciu kamery termowizyjnej.
In the paper experimental research of flat surfaces lapping with single-disk lapping machine presented. The paper is an introduction to single-disk lapping machine executory system components temperature rise research. Experiments were being conducted during with use of ABRALAP 380 lapping machine and infrared camera.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2018, 19, 12; 303-307
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preparation to Experimental Testing of the Potential from Using Facial Temperature Changes Registered with an Infrared Camera in Lie Detection
Autorzy:
Widacki, Jan
Widacki, Michał
Antos, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/523304.pdf
Data publikacji:
2016-03-01
Wydawca:
Krakowska Akademia im. Andrzeja Frycza Modrzewskiego
Tematy:
infrared camera in lie-detection
thermovision in detection of deception
Źródło:
European Polygraph; 2016, 10, 1; 17-24
1898-5238
2380-0550
Pojawia się w:
European Polygraph
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of the Detector Characteristic on the Result of Sky Temperature Measurement with the Use of Long-Wave Infrared Camera
Autorzy:
Kruczek, T.
Powiązania:
https://bibliotekanauki.pl/articles/114666.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
thermovision infrared measurements
sky thermal radiation
sky temperature
characteristic of infrared camera detector
Opis:
During the temperature measurements by means of infrared camera the temperature of surrounding elements must be known. In the case of thermovision inspections of the objects exposed to open air space, the surroundings consists of two elements, it is the ground and hypothetical sky surface. The sky temperature measured by long-wave IR camera is of apparent character because it expresses the thermal radiation of the sky within the spectral operational range of this camera i.e. 7.5÷13 μm. The abovementioned spectral range is coincident with so called atmospheric window within which the thermal radiation of the sky is relatively low. The emissivity of atmosphere within this window is low in the central part and high near the limits of the aforementioned range. In relation with the detector characteristic of the IR camera it causes underestimation of the measured sky temperature. This work deals with the analysis of influence of the IR camera detector characteristic on the results of determination of sky temperature and its thermal radiation intensity.
Źródło:
Measurement Automation Monitoring; 2015, 61, 6; 173-175
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chip Temperature Measurement in the Cutting Area During Rough Milling Magnesium Alloys with a Kordell Geometry End Mill
Autorzy:
Kuczmaszewski, Józef
Zagórski, Ireneusz
Zgórniak, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/2172352.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
magnesium alloys
milling
temperature in cutting area
chip temperature
infrared camera
Opis:
The paper presents the results of measurements of chip temperature in the cutting zone during milling. The main aim of the research was to record and compare the maximum chip temperature in consecutive frames of thermal images. An additional goal may be the influence of changes in technological parameters on the temperature of the chips in the cutting zone. Two grades of magnesium alloys were used for the tests: AZ31 and AZ91HP. The research used a carbide milling cutter with an additional chip breaker, dedicated to effective roughing of light alloys. These tool geometries can assist in the high-performance machining of magnesium alloys by efficiently splitting the chip and consequently reducing friction in the machining zone. This can reduce the cutting area temperature. The results of the research work were showed as exemplary "time" charts, box-plot charts and a summary table, which additionally included an error analysis of the measurement method. On the basis of the tests and measurements performed, it can be concluded that despite the observed chip fragmentation, the obtained temperatures can be defined as the so-called safe milling areas. During the machining tests, the risk of chip ignition during machining was not observed, also the characteristic melting points, which clearly indicates the safety of the milling process of these alloys. It has been observed that with the increase of vc and fz, there was no increase in the maximum temperature of the chip in the cutting area. This situation only occurs when increasing ap.
Źródło:
Advances in Science and Technology. Research Journal; 2022, 16, 2; 109--119
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of thermal effects accompanying tensile deformation of Shape Memory Polymer PU-SMP
Autorzy:
Pieczyska, E. A.
Staszczak, M
Maj, M.
Tobushi, H.
Hayashi, S.
Powiązania:
https://bibliotekanauki.pl/articles/114660.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
shape memory polymer
tension
thermo-mechanical coupling
temperature change
infrared camera
Opis:
Experimental results of effects of thermomechanical couplings occurring in shape memory polymer subjected to tension are presented. Stress-strain curves were recorded by testing machine, while their related temperature changes were measured with infrared camera. The mechanical and thermal characteristics were used to investigate the polymer properties. Three various stages were distinguished during the deformation process. The first, elastic, is accompanied by a drop in the specimen temperature; the second, plastic, is associated with change of the material structure and the temperature increase; the third stage, related to the specimen rupture and damage mechanisms, is accompanied by the significant increase in temperature.
Źródło:
Measurement Automation Monitoring; 2015, 61, 6; 203-205
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermographic study of chip temperature in high-speed dry milling magnesium alloys
Autorzy:
Kuczmaszewski, J.
Zagórski, I.
Zgórniak, P.
Powiązania:
https://bibliotekanauki.pl/articles/406699.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
machining
magnesium alloys
manufacturing processes
high efficiency
temperature
cutting area
infrared camera
Opis:
This paper presents an overview of the state of knowledge on temperature measurement in the cutting area during magnesium alloy milling. Additionally, results of own research on chip temperature measurement during dry milling of magnesium alloys are included. Tested magnesium alloys are frequently used for manufacturing elements applied in the aerospace industry. The impact of technological parameters on the maximum chip temperature during milling is also analysed. This study is relevant due to the risk of chip ignition during the machining process.
Źródło:
Management and Production Engineering Review; 2016, 7, 2; 86-92
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metrologiczna kamera termowizyjna z detektorem mikrobolometrycznym VOx
Metrological thermovision camera with VOx microbolometer
Autorzy:
Strąkowski, R.
Strąkowska, M.
Więcek, B.
Powiązania:
https://bibliotekanauki.pl/articles/154583.pdf
Data publikacji:
2011
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
termowizja
budowa kamery termowizyjnej
korekcja niejednorodności
thermovision
infrared camera construction
nonuniformity correction
Opis:
W artykule opisano budowę kamery termowizyjnej zaprojektowanej i wykonanej w Instytucie Elektroniki Politechniki Łódzkiej. Opisano blokowy schemat układu elektronicznego współczesnej kamery termowizyjnej. Omówiono proces akwizycji i korekcji obrazu termowizyjnego podczas jego transmisji na całej długości toru transmisyjnego kamery, od detektora do komputera. Przedstawiono operacje wykonywane na sygnale analogowym w układzie odczytu detektora oraz metody cyfrowej korekcji termogramu w czasie rzeczywistym zaimplementowane w procesorze sygnałowym.
In this paper construction of a new thermovision camera together with its parameters are presented. The camera was designed and realized in the Institute of Electronics at Technical University of Lodz. At first, the block diagram of a modern infrared camera was analyzed. It was divided into two parts: detectors and control-processing sections. First section, apart from VOx detector, contained also analog power suppliers, a focal plane array temperature stabilization circuit and a digital to analog converter. The second section consisted of a digital signal processor, SRAM and nonvolatile memories, a programmable logic device and the Ethernet interface for image transmission. The overall logic was implemented in a CPLD device for controlling the VOx detector. The image acquisition and correction processes along the whole transmission path are presented. Real time non-uniformity and bad pixel corrections performed by a powerful digital signal processor are described. Finally, the calibration process existing for every metrological camera and conclusions are given.
Źródło:
Pomiary Automatyka Kontrola; 2011, R. 57, nr 10, 10; 1104-1107
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A simple computer vision based indoor positioning system for educational micro air vehicles
Autorzy:
Kittenberger, T.
Ferner, A.
Scheikl, R.
Powiązania:
https://bibliotekanauki.pl/articles/950964.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
computer vision
indoor positioning
Gumstix
infrared camera
high power LED
robotics education
MAV
Opis:
Computer vision is one of the main research fields for micro air vehicles. Therefore many teams around the globe are developing different camera systems which are directly mounted on a MAV or observe and track it from a fixed position. This paper presents a simple and cheap solution for a precise 40 gram onboard computer vision system based on a 6 gram Gumstix Overo Firestorm computer, a 23 gram infrared camera a custom adapter board including buck converter and connectors and three ground based high power infrared LED’s. It has great potential for educational applications because no fixed and calibrated camera installation around the flight area is necessary so it can easily be deployed and removed. The use of various filter algorithms makes it very reliable and the 752x480 pixel images are processed with 12 fps. The achieved accuracy is about 2% and the range was tested up to 10 m.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2014, 8, 1; 46-52
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experiments in Using Face Temperature Changes as an Indicator in Instrumental Detection of Deception
Autorzy:
Mikrut, Zbigniew
Widacki, Michał
Widacki, Jan
Powiązania:
https://bibliotekanauki.pl/articles/523280.pdf
Data publikacji:
2018
Wydawca:
Krakowska Akademia im. Andrzeja Frycza Modrzewskiego
Tematy:
Face temperature changes and selection of deception
infrared camera in detection of deception
Źródło:
European Polygraph; 2018, 12, 3(45); 85-105
1898-5238
2380-0550
Pojawia się w:
European Polygraph
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermomechanical Properties of Vulcanized Rubber investigated by Testing Machine and Infrared Camera
Autorzy:
Staszczak, M
Pieczyska, E. A.
Maj, M.
Urbański, Ł.
Odriozola, I.
Martin, R.
Powiązania:
https://bibliotekanauki.pl/articles/114054.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
vulcanized rubber
self-healing polyurethane
tension test
thermo-mechanical couplings
temperature changes
infrared camera
Opis:
: Experimental results of effects of thermomechanical couplings occurring both in natural vulcanized rubber and rubber with self-healing polyurethane subjected to tension at different strain rates are presented. Mechanical characteristics were recorded by testing machine, while the sample temperature changes accompanying the deformation process was measured by infrared camera. The goal was to investigate influence of self-healing polyurethane on the rubber mechanical and thermomechanical properties. It was found that the introduction of the self-healing polyurethane ensures the higher elasticity and the lower tensile strength of the rubber. It was also confirmed that the material is very sensitive to the strain rate; the higher the strain rate, the higher the values of the stress and temperature increases have been obtained.
Źródło:
Measurement Automation Monitoring; 2015, 61, 6; 206-209
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermobaric Effects of Cast Composite Explosives of Different Charge Masses and Dimensions
Autorzy:
Simić, D.
Knežević, D.
Savić, K.
Draganić, V.
Sirovatka, R.
Tomić, L.
Powiązania:
https://bibliotekanauki.pl/articles/358429.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
shock wave in air
maximum overpressure
pressure impulse
thermal effect
infrared camera
thermal imaging
Opis:
The aim of this research was to determine the thermobaric effect of cast composite explosives, with different masses and dimensions of the chosen explosive charges. This was done by measuring the shock wave parameters in air (maximum overpressure and pressure impulse) and quantifying the thermal effect (temperature-time dependence), at different distances from the centre of the detonation. The chosen thermobaric explosive composition, TBE-3, was characterized. Its density, detonation velocity and viscosity-time dependence were determined. Experimental samples of different masses and calibres were prepared. The shock wave parameters in air were determined in field tests, by measuring the overpressure by piezo-electric pressure transducers. The detonation and the expansion of the explosion products were filmed by a TV high-speed camera, Phantom V9. An infrared (IR) camera FLIR SC7200 was used for recording the IR scene of the explosions and for tracking the thermal effects by a thermographic technique, i.e. thermal imaging. This work is an initial step towards establishing a method for the quantification of the thermal effects of a thermobaric detonation.
Źródło:
Central European Journal of Energetic Materials; 2016, 13, 1; 161-182
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 45

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