Print Email Facebook Twitter The fatigue failure study of repaired aluminum plates by composite patches using Acoustic Emission Title The fatigue failure study of repaired aluminum plates by composite patches using Acoustic Emission Author Maleki, Abdullah (Amirkabir University of Technology) Saeedifar, M. (TU Delft Structural Integrity & Composites; Amirkabir University of Technology) Ahmadi Najafabadi, Mehdi (Amirkabir University of Technology) Zarouchas, D. (TU Delft Structural Integrity & Composites) Date 2019 Abstract The aim of this study is to investigate the failure of cracked aluminum plates repaired by one-side composite patches under fatigue loading using Acoustic Emission (AE) and fractography images. Rectangular specimens made of 6061 aluminum alloy with central through thickness pre-cracks were repaired using glass/epoxy laminated patches. The specimens were subjected to the fatigue loading and AE technique was employed to monitor the effect of the repair patch on the damage progression. First, different stages of damage evolution were studied based on the mechanical data and fractography images. Then, the AE energy utilized to characterize failure process of the specimens. To this aim, AE signals of the aluminum cracking and adhesive layer failure were discriminated according to their energy content. The effect of patch thickness and layup on the failure behavior of the specimens were also studied. Finally, it is concluded that AE is a powerful technique to characterize the failure process of a repaired cracked aeronautic structure by composite patches. Subject Acoustic EmissionComposite patchFatigueFractographyRepaired cracked-aluminum To reference this document use: http://resolver.tudelft.nl/uuid:a50f4b46-feff-4f1d-818a-5716d8ae4b7f DOI https://doi.org/10.1016/j.engfracmech.2017.12.034 Embargo date 2021-09-29 ISSN 0013-7944 Source Engineering Fracture Mechanics, 210, 300-311 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 © 2019 Abdullah Maleki, M. Saeedifar, Mehdi Ahmadi Najafabadi, D. Zarouchas Files PDF 1_s2.0_S001379441731216X_main.pdf 4.3 MB Close viewer /islandora/object/uuid:a50f4b46-feff-4f1d-818a-5716d8ae4b7f/datastream/OBJ/view