Comparison of fatigue life predictions on the base of straight and zigzag-like crack models

Artem S. Semenov; Siegfried Saehn; Boris E. Melnikov

doi:10.1117/12.417668

1 February 2001 Comparison of fatigue life predictions on the base of straight and zigzag-like crack models

Artem S. Semenov, Siegfried Saehn, Boris E. Melnikov

Proceedings Volume 4348, Fourth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering; (2001) https://doi.org/10.1117/12.417668
Event: Fourth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, 2000, St. Petersburg, Russian Federation

Abstract

The influence of crack path configuration on its growth rate is considered. The straight and zigzag-like crack models are compared for the different stages of propagation and various loading conditions. Comparison of numerical results based on elasto-plastic finite element analysis and experimental data has been presented and discussed. The possible modification of classical fatigue lifetime prediction equations are discussed with aim to take into consideration the kinking effect at the initial stage of crack propagation.

Citation Download Citation

Artem S. Semenov, Siegfried Saehn, and Boris E. Melnikov "Comparison of fatigue life predictions on the base of straight and zigzag-like crack models", Proc. SPIE 4348, Fourth International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, (1 February 2001); https://doi.org/10.1117/12.417668

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