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June 6, 2026DesignsOpen Access

A Frequency–Stress–Ratio Fatigue Index for Polymer Composites

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Authors

JVJosé Luis Valencia-SánchezInstituto Tecnológico de PueblaCRCiro A. Rodríguez-GonzálezTecnológico de MonterreyUFU. Figueroa‐LópezTecnológico de Monterrey

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Implication

Randomized trial demonstrates a novel fatigue index predicting fatigue life in polymer composites, highlighting predictive capabilities for engineering design.

Key Points

  • The central aim is to develop a fatigue index that accurately predicts the fatigue life of polymer composites under varying loading conditions.
  • Introduced a frequency–stress–ratio fatigue index integrated into a residual-strength degradation model.
  • Utilized only two material parameters for predictive model without extensive experimental data.
  • Assumed failure occurs when residual strength matches the maximum applied stress.
  • The proposed model effectively predicts fatigue behavior influenced by cycle-dominated and time-dependent mechanisms.
  • Demonstrated superior predictive capabilities compared to conventional models requiring substantial calibration data.
  • Improved reliability of fatigue prediction methods for engineering applications in composite materials.

Cite This Study

Valencia-Sánchez et al. (2026) studied this question.

synapsesocial.com/papers/6a23b9ac71a5da9775e75828https://doi.org/10.3390/designs10030063
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