Fatigue failure prediction for unidirectional CFRP using SFF model with entropy damage criterion

Takumi Sekino, Jun Koyanagi, Department of Materials Science and Technology, Graduate School of Advanced Material Engineering, Graduate School of Tokyo University of Science, Department of Materials Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science

Journal of Composite Materials

Published online on April 27, 2026

Abstract

Journal of Composite Materials, Ahead of Print.
This study extends the Simultaneous Fiber-Failure (SFF) model to predict longitudinal tensile fatigue failure in unidirectional carbon-fiber-reinforced polymers (UD-CFRP) by embedding an entropy-based damage criterion for the matrix resin. The framework ...