Express Analysis of Fatigue Crack Growth Life Under Constant and Variable Amplitude Loading

被引：0
|
作者：
Savkin, A. N. [1 ]
Sunder, R. [1 ]
Sedov, A. A. [1 ]
Badikov, K. A. [1 ]
机构：
[1] Volgograd State Tech Univ, 28 Lenina Ave, Volgograd 400005, Russia
来源：
MECHANICS, RESOURCE AND DIAGNOSTICS OF MATERIALS AND STRUCTURES (MRDMS-2018) | 2018年 / 2053卷
关键词：
D O I：
10.1063/1.5084420
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The kinetics of fatigue crack growth in 2024-T3 Al-alloy specimens under constant and variable amplitude loading with different cycle ratios in the intermediate (Paris) region of the fatigue crack growth diagrams is studied. Variable amplitude loading is represented by quasi-random samples of standard random loading spectra. Crack growth curves are obtained and the crack growth rate per cycle in the loading block at various values of its length is estimated. The crack growth life is predicted view of crack closure and the nature of the random loading according to the proposed formula and cycle-by-cycle calculation.
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页数：5
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