Fatigue Life Estimation Model of Repaired Components with the Expanded Stop-Hole Technique
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Date
2024-02-01
Authors
Velilla-Díaz, Wilmer
Guillén-Rujano, Renny
Pérez-Ruiz, José David
López de Lacalle, Luis Norberto,
Palencia, Argemiro
Maury, Heriberto
Zambrano, Habib R.
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Abstract
Fatigue crack growth tests are conducted to assess the efficacy of the stop-hole crack repair
method. This straightforward and widely adopted technique involves drilling a hole at the crack tip
and subsequently enlarging it using a pin inserted into the hole. A fracture mechanics-based model
is proposed to estimate the extension of fatigue life achieved through the implementation of the
stop-hole technique. The model’s predictions are validated using data obtained from fatigue crack
growth tests conducted on both unrepaired and repaired M(T) specimens, following the guidelines
outlined in the ASTM E647 standard. The error of the fracture mechanics-based model was 1.4% in
comparison with the fatigue tests.
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Citation
Velilla-Díaz, Wilmer, Roger Pinzón, Renny Guillén-Rujano, José David Pérez-Ruiz, Luis Norberto López de Lacalle, Argemiro Palencia, Heriberto Maury, and Habib R. Zambrano. 2024. "Fatigue Life Estimation Model of Repaired Components with the Expanded Stop-Hole Technique" Metals 14, no. 2: 182. https://doi.org/10.3390/met14020182