Modeling Fatigue Failure in CFRP Laminates
Author Information
Author(s): Kudo Natsuko, Sekino Takumi, Fikry M. J. Mohammad, Koyanagi Jun
Primary Institution: Tokyo University of Science
Hypothesis
The study investigates how loading frequency affects fatigue failure in CFRP laminates by incorporating temperature and non-recoverable strain into a simulation model.
Conclusion
The study successfully simulates the fatigue behavior of epoxy resin in CFRPs, showing that both low and high loading frequencies significantly influence the number of cycles until failure.
Supporting Evidence
- The study shows that at low frequencies, damage accumulates rapidly due to significant inelastic deformation.
- At frequencies above 2 Hz, the number of cycles until failure decreases as temperature rises.
- The proposed model accurately simulates fatigue failure over a wide range of loading frequencies.
Takeaway
This study helps us understand how different speeds of loading can change how long materials last before they break, especially when they get hot.
Methodology
The study uses a numerical simulation framework that incorporates non-recoverable strain and heat generation to model the fatigue behavior of epoxy resin in CFRPs under cyclic loading.
Limitations
The accuracy of the non-recoverable strain representation needs improvement, and the model may not fully capture all aspects of material behavior under complex loading conditions.
Digital Object Identifier (DOI)
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