What question did this study set out to answer?

To investigate the thermomechanical fatigue behavior and damage evolution mechanisms of short fiber-reinforced composites under varying loading frequencies.

August 20, 2026Polymer Composites

Evaluation of Fatigue Lifetime and Fracture Mechanisms of Short Fiber‐Reinforced Composites Under the Influence of the Self‐Heating Effect

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Authors

AKAndrzej Katunin CXCe Xiao RHRongkang Han

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Overview

Experimental analysis demonstrates frequency-dependent fatigue damage evolution in short fiber-reinforced composites, indicating that self-heating alters microscopic fracture mechanisms.

Key Points

To investigate the thermomechanical fatigue behavior and damage evolution mechanisms of short fiber-reinforced composites under varying loading frequencies.
Assessed fatigue lifetime across different loading frequencies using a bilinear thermographic approach and standard S–N curve methods.
Characterized damage progression, structural degradation, and fracture modes using X-ray computed tomography, thermal evolution monitoring, and hysteresis loop analysis.
Fatigue strength remained below 45 MPa, and the bilinear thermographic approach estimated fatigue life with predictions differing by less than 13% from traditional S–N curves.
Higher loading frequencies accelerated self-heating and caused direct fiber fracture, whereas lower frequencies favored matrix cracking and crack coalescence prior to fiber failure.

Cite This Study

Katunin et al. (2026) studied this question.

synapsesocial.com/papers/6a86b5eb8a91293e6a1cd88d https://doi.org/10.1002/pc.71543

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August 20, 2026Polymer Composites

Evaluation of Fatigue Lifetime and Fracture Mechanisms of Short Fiber‐Reinforced Composites Under the Influence of the Self‐Heating Effect

View Full Paper

Ask AI

Bookmark

Authors

AKAndrzej Katunin CXCe Xiao RHRongkang Han

Discussion

Member takes

Overview

Experimental analysis demonstrates frequency-dependent fatigue damage evolution in short fiber-reinforced composites, indicating that self-heating alters microscopic fracture mechanisms.

Key Points

To investigate the thermomechanical fatigue behavior and damage evolution mechanisms of short fiber-reinforced composites under varying loading frequencies.
Assessed fatigue lifetime across different loading frequencies using a bilinear thermographic approach and standard S–N curve methods.
Characterized damage progression, structural degradation, and fracture modes using X-ray computed tomography, thermal evolution monitoring, and hysteresis loop analysis.
Fatigue strength remained below 45 MPa, and the bilinear thermographic approach estimated fatigue life with predictions differing by less than 13% from traditional S–N curves.
Higher loading frequencies accelerated self-heating and caused direct fiber fracture, whereas lower frequencies favored matrix cracking and crack coalescence prior to fiber failure.

Cite This Study

Katunin et al. (2026) studied this question.

synapsesocial.com/papers/6a86b5eb8a91293e6a1cd88d https://doi.org/10.1002/pc.71543

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