A comparison between optimized active thermography and digital shearography for detection of damage in aerospace composite structures

Giovanni De Angelis, Michele Meo, Darryl P Almond, Simon G Pickering, Stefano L Angioni

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The main goal of this research is to compare capabilities of two different Non-Destructive Testing (NDT) methods, thermosonics and digital shearography (DISH), to recognize and image back drilled hole defects. Thermosonics was optimized by varying magnitude of the heat flux, the excitation frequency, the number of excitation cycles, acquisition time, frame rate etc. DISH was optimized by investigating the test objects by dynamic loading approach in order to identify per each defect the (0 1) mode shape and the corresponding resonance frequency. In this way, whilst thermosonics provided the initial infrared imaging of the panel for a pass/fail test, DISH has been performed to provide the delamination quantitative assessment.
Original languageEnglish
Title of host publicationNondestructive Testing of Materials and Structures
Subtitle of host publicationProceedings of NDTMS-11, Istanbul, Turkey, May 15-18, 2011
EditorsOral Buyukozturk, Mehmet Ali Tasdemir, Oguz Gunes, Yilmaz Akkaya
Place of PublicationDordrecht
PublisherSpringer
Pages641-647
Number of pages7
ISBN (Electronic)9789400707238
ISBN (Print)9789400707221
DOIs
Publication statusPublished - 2013

Publication series

NameRILEM Bookseries
Volume6

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Cite this

De Angelis, G., Meo, M., Almond, D. P., Pickering, S. G., & Angioni, S. L. (2013). A comparison between optimized active thermography and digital shearography for detection of damage in aerospace composite structures. In O. Buyukozturk, M. A. Tasdemir, O. Gunes, & Y. Akkaya (Eds.), Nondestructive Testing of Materials and Structures: Proceedings of NDTMS-11, Istanbul, Turkey, May 15-18, 2011 (pp. 641-647). (RILEM Bookseries; Vol. 6). Dordrecht: Springer. https://doi.org/10.1007/978-94-007-0723-8_91