Fatigue behavior of FRP-to-steel bonded interface: An experimental study with a damage plasticity model

Y. Doroudi, D. Fernando*, H. Zhou, V. T. Nguyen, Elyas Ghafoori

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

This study presents an experimental and theoretical investigation into the bond-slip relation of a CFRP-to-steel bonded interface under cyclic loading. It was observed that the peak interfacial shear stress during cyclic loading was lower than that during monotonic loading. A damaged-plasticity-type bond-slip relation was developed to model the constitutive behavior of the bonded interface under quasi-static cyclic loading. This was further extended by developing a model for the damage accumulation rate to account for the damage evolution under fatigue cyclic loading. The predictions from the theoretical models were found to be conservative as compared to the experimental results.

Original languageEnglish
Article number105785
JournalInternational Journal of Fatigue
Volume139
Early online date17 Jun 2020
DOIs
Publication statusPublished - Oct 2020

Keywords

  • Bond-slip behavior
  • CFRP-to-steel adhesively-bonded interface
  • Cyclic loading
  • Damage plasticity model
  • Fatigue model

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