@inproceedings{309566fc2b9b42f7afe121712f79743c,
title = "In-situ damage investigation of adhesively bonded composite repairs",
abstract = "In aeronautic industries adhesive bonding is a common technique to repair composites. In this study interrupted in-situ observations by X-ray computed tomography (XCT) were used to investigate the crack initiation and propagation in scarf repaired CFRP-laminates. Specimens were tested in two conditions: i) as-received ii) after conditioning under hot/wet conditions to determine the moisture influence on the damage behaviour. The specimens were tested in-situ in a high resolution XCT device with a voxel size of (8 μm)3 at different load levels. The defects of each load step were segmented and compared to each other. An influence of the absorbed moisture neither on the damage propagation behaviour nor on the tensile strength could be observed. In particular, a concentration of cracks in the area of repair-ply terminations of the scarf joint could be determined.",
keywords = "Adhesive bonding, CFRP, In-situ, Scarf repair, X-ray tomography",
author = "Christian Hannesschl{\"a}ger and Florian R{\"o}per and Markus Wolfahrt and G Kucher and Bernhard Plank and Johann Kastner",
note = "Funding Information: The research work was performed at the University of Applied Sciences Upper Austria and the Polymer Competence Center Leoben GmbH (PCCL, Austria) within the framework of the COMET-program of the Federal Ministry of Science, Research and Economy with contributions by the FACC Operations GmbH (Austria). The PCCL is funded by the Austrian Government and the State Governments of Styria, Lower Austria and Upper Austria. This work was additionally supported by the K-Project for {\textquotedblleft}non-destructive testing and tomography plus{\textquotedblright} (ZPT+) and by the project {\textquotedblleft}multimodal and in-situ characterization of inhomogeneous materials{\textquotedblright} (MiCi) and by the European Regional Development Fund (EFRE) in the framework of the EU-program IWB2020. Publisher Copyright: {\textcopyright} CCM 2020 - 18th European Conference on Composite Materials. All rights reserved.; 18th European Conference on Composite Materials, ECCM 2018 ; Conference date: 24-06-2018 Through 28-06-2018",
year = "2020",
language = "English",
series = "ECCM 2018 - 18th European Conference on Composite Materials",
publisher = "Applied Mechanics Laboratory",
booktitle = "ECCM 2018 - 18th European Conference on Composite Materials",
}