On the Thickness Quantification of Composite Materials by Using Lock-In Thermography

» Autor: Davide Palumbo

» Referencia: doi: 10.3390/ma12071185

» Fecha Publicación: 11/04/2019

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Many structural components made of composite materials need an accurate thickness control during fabrication and/or maintenance. In this regard, various non-destructive techniques can be used for the online measuring of thickness of large components such as wings and fuselage in the aerospace industry. In this work, the capabilities of lock-in thermography technique in thickness measurement of glass fiber reinforced plastic material were investigated and a correct procedure has been proposed to ensure the best measurement accuracy. An analytical approach and several tests were carried out on a sample specimen with the aim to study the main test parameters. Finally, the limits of technique have been discussed.
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