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Author(s): E. Barreira
E. Bauer
N. Mustelier
V. P. Freitas
Title: Measurement of materials emissivity - Influence of the procedure
Issue Date: 2015
Abstract: Emissivity is one of the parameters that most influence measurements by infraredthermography, as it rules the effective radiation emitted by the surface, regarding the blackbody. For in situ measurements, the surface emissivity is defined using black tape withknown emissivity. The tape is glued over a portion of the surface under study and itstemperature is measured considering the tape emissivity. The surface emissivity is adjustedby equating the temperatures of the tape and of the surface near it. In this work the accuracyof this method was evaluated, by comparison with measurements made with an emissometer.The emissivity of ten different materials commonly used in buildings was assessed ,considering a black tape of well-known emissivity.
Subject: Engenharia civil, Engenharia civil
Civil engineering, Civil engineering
Scientific areas: Ciências da engenharia e tecnologias::Engenharia civil
Engineering and technology::Civil engineering
Source: AITA 2015 13th International Workshop on Advanced Infrared Technology & Applications
Document Type: Artigo em Livro de Atas de Conferência Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Livro de Atas de Conferência Internacional

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