A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Infrared emissivity measurement device: principle and applications
Infrared emissivity is a necessary parameter for computing models to predict road surface status and pavement temperature irrespective of the weather situation. In this work a new experimental device based on the indirect method was developed for the measurement of surface emissivities. The surface is exposed to modulated isotropic infrared radiation. The intensity reflected by the surface of the sample in a given direction is measured by a detector operating in the spectral range 1-40 microns. This large spectral range allows measurement of the total hemispheric emissivity defined in this case as emissivity. The effect of the temperature modulation frequency, surface composition and surface roughness on the emissivity measurements was investigated. The results show good ability of the device for the determination of emissivities at room temperature.
Infrared emissivity measurement device: principle and applications
Infrared emissivity is a necessary parameter for computing models to predict road surface status and pavement temperature irrespective of the weather situation. In this work a new experimental device based on the indirect method was developed for the measurement of surface emissivities. The surface is exposed to modulated isotropic infrared radiation. The intensity reflected by the surface of the sample in a given direction is measured by a detector operating in the spectral range 1-40 microns. This large spectral range allows measurement of the total hemispheric emissivity defined in this case as emissivity. The effect of the temperature modulation frequency, surface composition and surface roughness on the emissivity measurements was investigated. The results show good ability of the device for the determination of emissivities at room temperature.
Infrared emissivity measurement device: principle and applications
Messgerät zu Bestimmung des Infrarot-Emissionsvermögens: Prinzip und Anwendungen
Ibos, Laurent (author) / Marchetti, Mario (author) / Boudenne, Abderrahim (author) / Datcu, Stefan (author) / Candau, Yves (author) / Livet, Jean (author)
Measurement Science and Technology ; 17 ; 2950-2956
2006
7 Seiten, 5 Bilder, 5 Tabellen, 27 Quellen
Article (Journal)
English
Emissionsvermögen , Infrarotstrahlung , berührungsloses Messverfahren , optisches Messverfahren , Straßendecke , Zustandsbeschreibung , Asphalt , Oberflächentemperatur , Wetterverhältnis , Infrarotreflexion , Infrarotdetektor , Temperatureinfluss , Modulationsfrequenz , Oberflächenrauigkeit , indirekte Messung , Raumtemperaturversuch , chemische Zusammensetzung , theoretisches Modell , Modellsimulation
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