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

doi:10.1007/978-94-007-0723-8_91

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

Department of Mechanical Engineering

Research output: Chapter or section in a book/report/conference proceeding › Chapter in a published conference proceeding

1 Citation (SciVal)

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 language	English
Title of host publication	Nondestructive Testing of Materials and Structures
Subtitle of host publication	Proceedings of NDTMS-11, Istanbul, Turkey, May 15-18, 2011
Editors	Oral Buyukozturk, Mehmet Ali Tasdemir, Oguz Gunes, Yilmaz Akkaya
Place of Publication	Dordrecht
Publisher	Springer
Pages	641-647
Number of pages	7
ISBN (Electronic)	9789400707238
ISBN (Print)	9789400707221
DOIs	https://doi.org/10.1007/978-94-007-0723-8_91
Publication status	Published - 2013

Publication series

Name	RILEM Bookseries
Volume	6

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10.1007/978-94-007-0723-8_91

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). Springer. https://doi.org/10.1007/978-94-007-0723-8_91

A comparison between optimized active thermography and digital shearography for detection of damage in aerospace composite structures. / De Angelis, Giovanni; Meo, Michele; Almond, Darryl P et al.
Nondestructive Testing of Materials and Structures: Proceedings of NDTMS-11, Istanbul, Turkey, May 15-18, 2011 . ed. / Oral Buyukozturk; Mehmet Ali Tasdemir; Oguz Gunes; Yilmaz Akkaya. Dordrecht: Springer, 2013. p. 641-647 (RILEM Bookseries; Vol. 6).

Research output: Chapter or section in a book/report/conference proceeding › Chapter in a published conference proceeding

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

De Angelis G, Meo M, Almond DP, Pickering SG, Angioni SL. A comparison between optimized active thermography and digital shearography for detection of damage in aerospace composite structures. In Buyukozturk O, Tasdemir MA, Gunes O, Akkaya Y, editors, Nondestructive Testing of Materials and Structures: Proceedings of NDTMS-11, Istanbul, Turkey, May 15-18, 2011 . Dordrecht: Springer. 2013. p. 641-647. (RILEM Bookseries). doi: 10.1007/978-94-007-0723-8_91

De Angelis, Giovanni ; Meo, Michele ; Almond, Darryl P et al. / A comparison between optimized active thermography and digital shearography for detection of damage in aerospace composite structures. Nondestructive Testing of Materials and Structures: Proceedings of NDTMS-11, Istanbul, Turkey, May 15-18, 2011 . editor / Oral Buyukozturk ; Mehmet Ali Tasdemir ; Oguz Gunes ; Yilmaz Akkaya. Dordrecht : Springer, 2013. pp. 641-647 (RILEM Bookseries).

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AB - 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.

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

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