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Pulsed Phase Thermography Approach for the Characterization of Delaminations in CFRP and Comparison to Phased Array Ultrasonic Testing

TitoloPulsed Phase Thermography Approach for the Characterization of Delaminations in CFRP and Comparison to Phased Array Ultrasonic Testing
Tipo di pubblicazioneArticolo su Rivista peer-reviewed
Anno di Pubblicazione2019
AutoriD’Accardi, E., Palano F., Tamborrino R., Palumbo Domenico, Tatì Angelo, Terzi R., and Galietti U.
RivistaJournal of Nondestructive Evaluation
Volume38
ISSN01959298
Parole chiaveCarbon fiber reinforced plastics, Computational processing, Data handling, Delamination, Extract informations, Frequency domain analysis, Frequency domains, Production process, Pulsed phase thermography, Thermography (imaging), Ultrasonic C-scan image, Ultrasonic phased array, Ultrasonic techniques, Ultrasonic testing, Ultrasonic transducers
Abstract

Pulsed phase thermography (PPT) is a well-established algorithm used for processing thermographic data in frequency domain with the aim to extract information about the defect size and depth. However, few works demonstrated the capability of PPT technique in defects evaluation in real components. The aim of this work is the assessment of capability of PPT technique in determining delaminations in CFRP components used in aeronautics. The component chosen for implementing the technique has a non-uniform geometry and the defects inside it are not simulated, but they are real and generated during the production process. The specimen has been investigated through the application of both the ultrasonic technique and the thermographic one. Thermographic phase images elaborated with a suitable computational processing have been compared with Ultrasonic C-scan images and, the agreement between the location and depth of defects has been verified. Besides, the ultrasonic technique has been used to validate the PPT results. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85060529728&doi=10.1007%2fs10921-019-0559-8&partnerID=40&md5=4de06022c165ddc36dd7ff1cb9d48c84
DOI10.1007/s10921-019-0559-8
Citation KeyD’Accardi2019