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REEC: Revista Eletrônica de Engenharia Civil
Article . 2017 . Peer-reviewed
Data sources: Crossref
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ESTUDO DE PARÂMETROS RELEVANTES NA OBTENÇÃO DE TERMOGRAMAS PARA DIAGNÓSTICO DE PROBLEMAS PATOLÓGICOS

Authors: Camila Akemi Sakamoto; Cesar Fabiano Fioriti;

ESTUDO DE PARÂMETROS RELEVANTES NA OBTENÇÃO DE TERMOGRAMAS PARA DIAGNÓSTICO DE PROBLEMAS PATOLÓGICOS

Abstract

RESUMO: Esse trabalho trata do estudo de sensibilidade de um equipamento de termografia, em que foram avaliados os seguintes parâmetros relevantes na obtenção de termogramas: (1) influência das reflexões (superfície refletante e obstáculos), (2) influência do gradiente de temperatura, (3) influência da cor (temperatura ambiente e radiação solar) e (4) influência da distância da câmera infravermelha ao objeto. Dessa maneira, de caráter experimental, foi realizada em ambiente de laboratório uma análise e interpretação da avaliação dos parâmetros relevantes na obtenção de termogramas, sendo que foi possível avaliar as potencialidades da termografia infravermelha conseguindo com os diferentes ensaios a determinação da temperatura superficial dos materiais e componentes, bem como pode ser verificado a importância do conhecimento da sensibilidade das técnicas de ensaio utilizadas em medições para a avaliação do desempenho físico de corpos de prova. Por meio dos parâmetros estudados foi possível concluir que há muitas influências, como por exemplo, a refletividade e a atenuação atmosférica, que podem produzir uma análise incorreta ou até mesmo incapacitar a visualização de algum problema patológico presente. É preciso então, além de conhecimento do assunto, ter atenção a todos os fatores externos de forma a serem detectados e eliminados, ou ainda levados em consideração na hora da execução da técnica da termografia infravermelha para que sejam minimizados.
 
 ABSTRACT: This paper presents a sensitivity study of a thermography equipment, in which evaluated the following parameters relevant to the achievement of thermographs: (1) influence of reflections (refletante surface and obstacles), (2) influence of temperature gradient, (3) influence of color (ambient temperature and solar radiation) and (4) influence of distance from infrared camera to the object. In this way, a laboratory analysis and interpretation of the evaluation of the relevant parameters in the obtaining of thermograms was carried out in a laboratory environment, and it was possible to evaluate the potentialities of the infrared thermography, obtaining with the different tests the determination of the surface temperature of the materials and Components as well as the importance of knowledge of the sensitivity of the test techniques used in measurements for the evaluation of the physical performance of test specimens can be verified. Through the studied parameters it was possible to conclude that there are many influences, such as reflectivity and atmospheric attenuation, which can produce an incorrect analysis or even incapacitate the visualization of some present pathological problem. It is necessary, in addition to knowledge of the subject, to pay attention to all external factors in order to be detected and eliminated, or even taken into account when performing the technique of infrared thermography so that they are minimized.

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold