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Damage Detectability on Aluminum Alloy Panels Under Composite Patching by Various NDT Techniques

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Abstract

Composite patching method is widely applied for repair cases of metallic aircraft structures due to more efficient performance than conventional repairs. However, the detection of structures integrity under patch, during the service life of aircraft, by non-destructive means is considered of great importance. In the present study, different NDT techniques such as active infrared thermography, eddy currents and electrical impedance spectroscopy, were applied for the detection of simulated artificially introduced damages - notches, on the surface of aluminum aircraft skin panels, Al 2024-T3, under composite patching (carbon reinforced laminates). The detection sensitivity of each technique was investigated based on the relation between thickness of composite patch and specific parameters of each method aiming at the development of a reliable, for this purpose, quality inspection technique.

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Authors and Affiliations

  1. Department of Chemical Engineering, Section of Materials Science and Engineering, National Technical University of Athens, 9 Iroon Polytechniou St., Zografou, Athens, Greece

    Antonia Moropoulou, Niki Kouloumbi, Nicolas P. Avdelidis & Paraskevi Pantazopoulou

  2. Department of Research & Development, Composite Materials & Processes Laboratory, Hellenic Aerospace Industry, P.O. Box 23, Schimatari, Greece

    Zaira P. Marioli-Riga

Authors
  1. Antonia Moropoulou
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  2. Niki Kouloumbi
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  3. Zaira P. Marioli-Riga
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  4. Nicolas P. Avdelidis
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  5. Paraskevi Pantazopoulou
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Moropoulou, A., Kouloumbi, N., Marioli-Riga, Z.P. et al. Damage Detectability on Aluminum Alloy Panels Under Composite Patching by Various NDT Techniques. MRS Online Proceedings Library 699, 23 (2001). https://doi.org/10.1557/PROC-699-R2.3

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  • DOI: https://doi.org/10.1557/PROC-699-R2.3

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