Title
On the post-impact fatigue behavior and theoretical life prediction of CF/PEEK-titanium hybrid laminates using an energy dissipation approach
Author
Ji, C. (TU Delft Structural Integrity & Composites; Harbin Institute of Technology)
Hu, Jiqiang (Harbin Institute of Technology)
Alderliesten, R.C. (TU Delft Structural Integrity & Composites) 
Yang, Jinchuan (Harbin Institute of Technology)
Zhou, Zhengong (Harbin Institute of Technology)
Sun, Yuguo (Harbin Institute of Technology)
Wang, Bing (Harbin Institute of Technology)
Date
2024
Abstract
This paper aims to illustrate the effect of the impact damage on fatigue behavior of CF/PEEK-titanium hybrid laminates. To achieve this end, a fatigue life model was proposed to predict the S–N curves of the laminates at various initial impact energy levels and stress ratios based on the energy dissipation approach. The energy dissipation behavior of the laminates during fatigue loading under different experimental conditions was analyzed through a large amount of post-impact fatigue tests, and the correlation between the initial impact damage and the total fatigue dissipation energy was determined. The full-field axial strain distribution of the titanium layer on the impacted side of the laminate was characterized in terms of initial impact energy level and maximum stress using digital image correlation, and then the post-impact fatigue failure mechanism of CF/PEEK-Ti hybrid laminates was summarized. Finally, the validity of the proposed model was verified by fatigue tests under other conditions of stress ratio and impact energy level. It is worth mentioning that the proposed model is also applicable to other types of FMLs, and can accurately predict the residual fatigue life of laminates after impact with only one set of S–N curve data.
Subject
Energy dissipation approach
Fiber metal laminates
Life prediction
Post-impact fatigue behavior
To reference this document use:
http://resolver.tudelft.nl/uuid:640c0f3e-60c4-4736-ae08-352bef953637
DOI
https://doi.org/10.1016/j.compscitech.2023.110354
Embargo date
2024-06-03
ISSN
0266-3538
Source
Composites Science and Technology, 245
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
© 2024 C. Ji, Jiqiang Hu, R.C. Alderliesten, Jinchuan Yang, Zhengong Zhou, Yuguo Sun, Bing Wang