Comparison of low-velocity impact damage in thermoplastic and thermoset composites by non-destructive three-dimensional X-ray microscope |
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| Institution: | 1. INSA Rouen Normandie, Groupe de Physique des Matériaux (UMR CNRS 6634), Equipe ERMECA, 76801 St Etienne du Rouvray, France;2. Université de Toulouse, Institut Clément Ader (UMR CNRS 5312), ISAE-SUPAERO, 10 av. E. Belin – 31055, Toulouse cedex 4, France;1. Faculty of Engineering and Environment, University of Southampton, Highfield, Southampton SO17 1BJ, UK;2. Department of Aerospace Engineering, MIT Campus, Anna University, Chennai, India;3. Università degli Studi di Camerino, School of Architecture and Design, Viale della Rimembranza, 63100 Ascoli Piceno, Italy |
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| Abstract: | This paper presents a method for the non-destructive inspection and quantitative comparison of low-velocity impact damage in thermoplastic and thermoset composites. X-ray microscope (XRM) computed tomography is used to analyse the three-dimensional internal damage in carbon fibre/poly-ether-ether-ketone (AS4/PEEK) and carbon fibre/epoxy (CCF300/Epoxy) laminates. With the materials and testing conditions used, it was shown that thermoplastic composites have better interlaminar and intralaminar properties, and the following quantitative conclusions were drawn. Under the same impact energy, the maximum contact force of AS4/PEEK laminate was approximately twice that of CCF300/Epoxy laminate. Dissection of the reconstructed XRM volume along a characteristic slicing surface showed that AS4/PEEK had less internal damage than CCF300/epoxy. When the impact energy was 15 J, the XRM results showed that the sum of delamination areas between each ply in AS4/PEEK was only 9% of that in CCF300/Epoxy, whereas the ultrasonic C-scan results showed that the total delamination area of AS4/PEEK was 54.78% of that of CCF300/Epoxy. |
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| Keywords: | Thermoplastic composites Impact behavior Non-destructive testing CT analysis |
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