On the post-impact fatigue behavior and theoretical life prediction of CF/PEEK-titanium hybrid laminates using an energy dissipation approach

Chunming Ji, Jiqiang Hu, René Alderliesten, Jinchuan Yang, Zhengong Zhou, Yuguo Sun, Bing Wang*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review


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.

Original languageEnglish
Article number110354
Number of pages15
JournalComposites Science and Technology
Publication statusPublished - 2024

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.


This work was financially supported by Science Foundation of the National Key Laboratory of Science and Technology on Advanced Composites in Special Environments , National Natural Science Foundation of China (Grant Number 11972008 , 11972135 and 12272111 ), Heilongjiang Touyan Team (Grant Number HITTY-20190003 ) and China Scholarship Council (No. 202106120087 ).


  • Energy dissipation approach
  • Fiber metal laminates
  • Life prediction
  • Post-impact fatigue behavior


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