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Recent advances in active infrared thermography for non-destructive testing of aerospace components

Ciampa, Francesco, Mahmoodi, Pooya, Pinto, Fulvio and Meo, Michele (2018) Recent advances in active infrared thermography for non-destructive testing of aerospace components SENSORS, 18 (2), 609.

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Active infrared thermography is a fast and accurate non-destructive evaluation technique that is of particular relevance to the aerospace industry for the inspection of aircraft and helicopters' primary and secondary structures, aero-engine parts, spacecraft components and its subsystems. This review provides an exhaustive summary of most recent active thermographic methods used for aerospace applications according to their physical principle and thermal excitation sources. Besides traditional optically stimulated thermography, which uses external optical radiation such as flashes, heaters and laser systems, novel hybrid thermographic techniques are also investigated. These include ultrasonic stimulated thermography, which uses ultrasonic waves and the local damage resonance effect to enhance the reliability and sensitivity to micro-cracks, eddy current stimulated thermography, which uses cost-effective eddy current excitation to generate induction heating, and microwave thermography, which uses electromagnetic radiation at the microwave frequency bands to provide rapid detection of cracks and delamination. All these techniques are here analysed and numerous examples are provided for different damage scenarios and aerospace components in order to identify the strength and limitations of each thermographic technique. Moreover, alternative strategies to current external thermal excitation sources, here named as material-based thermography methods, are examined in this paper. These novel thermographic techniques rely on thermoresistive internal heating and offer a fast, low power, accurate and reliable assessment of damage in aerospace composites.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Mechanical Engineering Sciences
Authors :
Mahmoodi, Pooya
Pinto, Fulvio
Meo, Michele
Date : 16 February 2018
DOI : 10.3390/s18020609
Copyright Disclaimer : © 2018 by the authors.
Additional Information : The authors would like to pay tribute to Darryl Almond who passed away before submission of this article. He was a good scientist, a kind man, and more.
Depositing User : Diane Maxfield
Date Deposited : 13 Sep 2019 14:48
Last Modified : 13 Sep 2019 14:48

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