Statistical analysis of fatigue crack propagation data of materials from ancient portuguese metallic bridges

A statistical analysis of fatigue crack propagation data from ancient Portuguese metallic bridges reveals that the proposed design curves for fatigue crack growth (FCG) rates align more closely with actual material behavior than the existing BS7910 standard. This finding is crucial for improving residual fatigue life predictions, which are essential for maintaining these historic structures, such as the Luiz I Bridge and Monastery of Serra do Pilar in Oporto. The study analyzed data from five representative bridges, including riveted railway and highway structures, using Paris’s law to correlate crack growth rates. By proposing more accurate FCG curves, this research provides a robust framework for assessing fatigue damage and guiding remediation efforts, ensuring the longevity of these culturally significant heritage sites.

Correia, J. A. F. O., De Jesus, A. M. P., Calcada, R., Pedrosa, B., Rebelo, C., da Silva, L. S., & ISISE, Department of Civil Engineering, G. (2017). Statistical analysis of fatigue crack propagation data of materials from ancient portuguese metallic bridges. Frattura Ed Integrità Strutturale, 11(42), 136–146. https://doi.org/10.3221/igf-esis.42.15