Failure analysis and damage modeling of precipitate strengthened Cu–Ni–Si alloy under fatigue loading
(2018) IGF Workshop “Fracture and Structural Integrity” — Location: Cassino, Italy
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- Authors
Sapanathan, Thaneshan 
- Abstract
- Failure analysis and damage evolution in precipitation hardened Cu-2.5Ni-0.6Si alloy are investigated in this study. Firstly, experimental fatigue tests were performed to determine the S-N curve of the material. Then, based on the results of fatigue tests, we have modeled the damage using four linear and cumulative models. The intersection of damage-reliability curves allowed to define three stages of damage during the life cycle for various loading levels. The life fraction βp reveals the stage of slow crack propagation where a preventive action must be adopted to ensure the proper functioning of the structure. The life fraction βc corresponds to the stage of sudden crack propagation when the damage becomes uncontrollable.
- Affiliations
Citations
Saadouki, B., Sapanathan, T., Pelca, P. H., Elghorba, M., & Rachik, M. (2018). Failure analysis and damage modeling of precipitate strengthened Cu–Ni–Si alloy under fatigue loading. Procedia Structural Integrity, 9(1), 186-198. https://doi.org/10.1016/j.prostr.2018.06.029 (Original work published 2018)