Effect of Overload on the Near-Threshold Fatigue Crack Growth Rate in a 2024-T3 Aluminum Alloy: I. Effect of the Character, the Magnitude, and the Sequence of Overload on the Fatigue Crack Growth Rate

A. N. Savkin; R. Sunder; A. V. Andronik; A. A. Sedov

doi:10.1134/S0036029518110113

Effect of Overload on the Near-Threshold Fatigue Crack Growth Rate in a 2024-T3 Aluminum Alloy: I. Effect of the Character, the Magnitude, and the Sequence of Overload on the Fatigue Crack Growth Rate

Авторы: Savkin A.N.¹, Sunder R.¹, Andronik A.V.¹, Sedov A.A.¹
Учреждения:
1. Volgograd State Technical University
Выпуск: Том 2018, № 11 (2018)
Страницы: 1094-1099
Раздел: Article
URL: https://journal-vniispk.ru/0036-0295/article/view/172742
DOI: https://doi.org/10.1134/S0036029518110113
ID: 172742

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Аннотация

The results of overload and underload tests on aluminum specimens in the near-threshold crack growth rate region are discussed. These tests are performed to choose a model for predicting the fatigue life. The influence of the character and the magnitude of overload and underload on the fatigue crack growth time is analyzed. The obtained crack growth curves and the fatigue lives cannot be explained in terms of classical models, which makes it necessary to develop a new model.