Projection-based reconstruction of dent strains in thin-walled metallic structures
Yajun Liu, Bojan Starman, Alessandro Lambrughi, Philip Eyckens, Rob Salaets, Miroslav Halilovič, Sam Coppieters
Abstract This study introduces four inverse methodologies for reconstructing the strain field within a dent in a thin-walled metallic structure. Using exclusively the dent’s deformed shape and the initial undamaged panel shape, the proposed inverse approaches enable the reconstruction of the dent strain field. The accuracy of the methods is investigated based on simulated data, which serves as the ground truth. To this end, a hail impact simulation is conducted with ABAQUS, mimicking typical dent dimensions observed in aircraft. Furthermore, a Digital Virtual Twin (DVT) of the Projection-based Digital Image Correlation (Pb-DIC) dent shape measurement is used to investigate the robustness of the inverse strain reconstruction methods. The results show that the methods effectively capture the displacement fields and thus exhibit good predictive accuracy of the strain field. The methodology provides an opportunity for better-grounded damage assessment of dents in aircraft.
Keywords
Aircraft Dent Inspection, Strain Reconstruction, Inverse Approach
Published online 5/7/2025, 10 pages
Copyright © 2025 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Yajun Liu, Bojan Starman, Alessandro Lambrughi, Philip Eyckens, Rob Salaets, Miroslav Halilovič, Sam Coppieters, Projection-based reconstruction of dent strains in thin-walled metallic structures, Materials Research Proceedings, Vol. 54, pp 1558-1567, 2025
DOI: https://doi.org/10.21741/9781644903599-168
The article was published as article 168 of the book Material Forming
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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