A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Prediction of fatigue crack propagation in center cracked steel plate strengthened with partially covered CFRP strip
Abstract Evaluating the fatigue performance of steel members strengthened with carbon fiber reinforced polymer (CFRP) is of great significance for formulating maintenance strategies and making full use of materials. Current analytical models are mainly developed for fully covered CFRP strengthening method without considering different mechanisms at each stage. In this paper, an analytical model considering different stages of crack propagation was proposed to predict the fatigue performance of center cracked steel plates strengthened with partially covered CFRP strips. The strengthening effects of CFRP strips were numerically analyzed based on the extended finite element model (XFEM) calibrated by test data. The validity of the analytical model was checked by several sets of test data and numerical simulations. The results show that the proposed analysis model can reasonably predict the fatigue life of center cracked steel plates strengthened with partially covered CFRP strips. This study may provide a reference for the application of the partially covered CFRP fatigue strengthening method in engineering structures.
Highlights An analytical model was proposed to predict the fatigue life of steel plates strengthened with partially covered CFRP strips. The proposed model can accurately evaluate the fatigue life of repaired steel plates with cracks at different stages. The validity of the analysis model was checked by several sets of test data in the literature and numerical simulation. The CFRP strip strengthening effects were analyzed based on the extended finite element model calibrated by test data.
Prediction of fatigue crack propagation in center cracked steel plate strengthened with partially covered CFRP strip
Abstract Evaluating the fatigue performance of steel members strengthened with carbon fiber reinforced polymer (CFRP) is of great significance for formulating maintenance strategies and making full use of materials. Current analytical models are mainly developed for fully covered CFRP strengthening method without considering different mechanisms at each stage. In this paper, an analytical model considering different stages of crack propagation was proposed to predict the fatigue performance of center cracked steel plates strengthened with partially covered CFRP strips. The strengthening effects of CFRP strips were numerically analyzed based on the extended finite element model (XFEM) calibrated by test data. The validity of the analytical model was checked by several sets of test data and numerical simulations. The results show that the proposed analysis model can reasonably predict the fatigue life of center cracked steel plates strengthened with partially covered CFRP strips. This study may provide a reference for the application of the partially covered CFRP fatigue strengthening method in engineering structures.
Highlights An analytical model was proposed to predict the fatigue life of steel plates strengthened with partially covered CFRP strips. The proposed model can accurately evaluate the fatigue life of repaired steel plates with cracks at different stages. The validity of the analysis model was checked by several sets of test data in the literature and numerical simulation. The CFRP strip strengthening effects were analyzed based on the extended finite element model calibrated by test data.
Prediction of fatigue crack propagation in center cracked steel plate strengthened with partially covered CFRP strip
Liu, Jielin (author) / Zhao, Xiao-Ling (author) / Xin, Haohui (author) / Zhang, Youyou (author)
Thin-Walled Structures ; 189
2023-06-02
Article (Journal)
Electronic Resource
English
Fatigue Tests of Cracked Steel Plates Strengthened with UHM CFRP Plates
| Online Contents | 2012
Fatigue Tests of Cracked Steel Plates Strengthened with UHM CFRP Plates
| SAGE Publications | 2012
Fatigue crack growth in CFRP-strengthened steel plates
| British Library Online Contents | 2015