Fatigue Crack Growth Rate of the Long Term Operated Puddle Iron from the Eiffel Bridge

• Type: Article in International Scientific Journal
• Date: 2019

Authors

Grzegorz Lesiuk (Author) Other; José A. F. O. Correia (Author) FEUP; Michał Smolnicki (Author) Other; Abílio M. P. de Jesus (Author) FEUP; Monika Duda (Author) Other; Pedro A. Montenegro (Author) FEUP; Rui A. B. Calçada (Author) FEUP

Journal

Title: Metals

Vol. 9 No. 1

Pages: 1-13

Publisher: MDPI

Indexing

ISI Web of Knowledge - 13 Citations

Scopus - 14 Citations

Other information

Authenticus ID: P-00Q-7SG

DOI: 10.3390/met9010053

Abstract (EN): The paper summarises an experimental study on the fatigue crack propagation and cracks paths in ancient steel-19th-century puddle iron from the Eiffel bridge. The tests were performed with the load R-ratio equal to 0.05 and 0.5. All tests were performed under different notch inclinations (mode I + II). The fatigue crack growth rate in the tested material is significantly higher than its "modern" equivalent-low carbon mild steel. The crack closure phenomenon occurs in specimens during the process of crack growth. Understanding this aspect is crucial for the examination of a stress R-ratio influence on kinetic fatigue fracture diagram (KFFD) description. Both the experimental and numerical approach, using the HP VEE environment, has been applied to the crack closure as well as the crack opening forces' estimation. These analyses are based on the deformation of the hysteresis loop. The algorithm that was implemented in the numerical environment is promising when it comes to describing the kinetics of fatigue crack growth (taking into consideration the crack closure effect) in old metallic materials.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13