Print Email Facebook Twitter Co-curing bonding of carbon fibre/epoxy composite joints with excellent structure integrity using carbon fibre/PEEK tapes Title Co-curing bonding of carbon fibre/epoxy composite joints with excellent structure integrity using carbon fibre/PEEK tapes Author Quan, D. (TU Delft Structural Integrity & Composites; Shandong University) Zhao, Guoqun (Shandong University) Scarselli, Gennaro (University of Salento) Alderliesten, R.C. (TU Delft Structural Integrity & Composites) Date 2022 Abstract A novel co-curing process was proposed for the bonding of carbon fibre/epoxy composites by replacing traditional epoxy adhesives with carbon fibre/PEEK (CF/PEEK) tapes, with an attempt to improve the structure integrity. The lap-shear strengths, fatigue resistance and mode-I and mode-II fracture behaviour of the co-cured joints at 22 °C and 130 °C were investigated, and the failure mechanisms were also studied. The experimental results demonstrated that, by replacing an aerospace structural adhesive with surface-treated CF/PEEK tapes for the co-curing bonding of composite joints, the lap-shear strength of the joints had been increased by 47% and 68% at 22 °C and 130 °C, respectively; the fatigue life had been extended by 3.39 times; the mode-I fracture energy had been increased by 70% and 182% at 22 °C and 130 °C, respectively; and the mode-II fracture energy had been increased by 59% and 54% at 22 °C and 130 °C, respectively. An analysis on the failure surfaces of the tested specimens proved significant plastic deformation and breakage of the PEEK resin and extensive carbon fibre delamination being the main failure mechanisms of the CF/PEEK bonded joints. Overall, this study demonstrated a huge potential of replacing traditional film adhesives with CF/PEEK tapes for the co-curing bonding of aerospace composite joints with significantly enhanced structure integrity and thermal stability. Subject Co-curing bondingFractographyFracture toughnessMechanical propertiesPolymer-matrix composites (PMCs) To reference this document use: http://resolver.tudelft.nl/uuid:f2c79b14-c067-4d2a-a419-238c475f33bd DOI https://doi.org/10.1016/j.compscitech.2022.109567 Embargo date 2023-01-02 ISSN 0266-3538 Source Composites Science and Technology, 227 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2022 D. Quan, Guoqun Zhao, Gennaro Scarselli, R.C. Alderliesten Files PDF 1_s2.0_S0266353822003098_main.pdf 10.3 MB Close viewer /islandora/object/uuid:f2c79b14-c067-4d2a-a419-238c475f33bd/datastream/OBJ/view