Events The Eighteenth International Conference of Experimental Mechanics

Event submissions

Published

This submission belongs to the session ICEM. ICEM 2018 of the event The Eighteenth International Conference of Experimental Mechanics

Published date

15 Jun, 2018

Citation

Gaétan Poelman, Saeid Hedayatrasa, Joost Segers, Javier Calderon, Wim Van Paepegem, Mathias Kersemans, 167 Optical Infrared Thermography of CFRP with Artificial Defects: Performance of Various Post-Processing Techniques, in Proceedings of The Eighteenth International Conference of Experimental Mechanics, Brussels, 1 July–5 July 2018, MDPI: Basel, Switzerland, doi: 10.3390/ICEM18-05358

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167 Optical Infrared Thermography of CFRP with Artificial Defects: Performance of Various Post-Processing Techniques

Gaétan Poelman ¹

Saeid Hedayatrasa ^1,2

Joost Segers ¹

Javier Calderon ¹

Wim Van Paepegem ¹

Mathias Kersemans ¹

1. Department of Materials, Textiles and Chemical Engineering (MaTCh), Ghent University

2. SIM Program M3 DETECT-IV, Technologiepark-Zwijnaarde 935, B-9052 Zwijnaarde, Belgium

Abstract

This paper treats an experimental study that focusses on optical infrared thermography for non-destructive testing of composites through lock-in and flash excitation. Different fiber reinforced plastics with various artificial defects have been investigated. Three different post-processing techniques are applied, namely fast Fourier transform (FFT), principal component analysis (PCA) and thermographic signal reconstruction (TSR). A comparison between the different excitation and post-processing methods is performed, and their strengths and weaknesses in detecting artificial defects in composites are evaluated and discussed.

Keywords

Non-destructive testing

CFRP

lock-in thermography

flash thermography

post-processing

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