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Solving inverse geometry heat conduction problems by postprocessing steady thermograms

delete2019-11-01
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PRE
AI
M
Marı́a Higuera
J
José Manuel Perales Perales
M
María-Luisa Rapún *
J
José M. Vega
DOI:10.1016/j.ijheatmasstransfer.2019.118490delete
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摘要

摘要

En 中文
This paper deals with the use of steady active thermographic inspection as a structural health monitoring method to detect defects and inclusions in a heat conductive medium. The proposed postprocessing method has the advantage of taking into account the whole physics of the problem instead of a reduced set of physical information, as most of the traditional methods do. In comparison with other nondestructive testing techniques like ultrasonics, thermographic inspection is non-contact, more non intrusive, and safer. However, processing thermographic data is a fairly demanding problem because heat conduction is short range and exhibits a poor signal-to-noise ratio. Numerical experiments illustrate that the present postprocessing technique detects damage fairly well even in very challenging scenarios where the size of the defects is rather small and/or thermograms are highly noisy. (C) 2019 Elsevier Ltd. All rights reserved.
Keyword:
Nondestructive testing
Structural health monitoring
Steady thermography
Infrared thermography
Topological sensitivity
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期刊

International Journal of Heat and Mass Transfer 封面图
International Journal of Heat and Mass Transfer
IF:
5.8
论文数:
2.6W
被引数:
10.2W

机构

U
Universidad Politecnica de Madrid
学者数:
1.4W
论文数: 1.2W
被引数: 10
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