Scaling Invariance of Fracture in Aluminum Alloy under Fatigue and Dynamic Loading

被引:2
|
作者
Oborin, Vladimir [1 ]
Naimark, Oleg [1 ]
Bannikov, Mikhail [1 ]
Sokovikov, Mikhail [1 ]
Bilalov, Dmitry [1 ]
机构
[1] Inst Continuous Media Mech UrB RAS, Perm 614013, Russia
基金
俄罗斯科学基金会;
关键词
gigacycle fatigue; scaling; crack; morphology; dynamic loading;
D O I
10.1063/1.4901494
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
The role of the collective behavior of defect ensembles at the crack tip and the laws of fatigue crack propagation in aluminum-magnesium alloy AMg6 (5056) have been studied under conditions of symmetric tension-compression gigacycle loading at 20 kHz using ultrasonic fatigue testing machine Shimadzu USF2000. 3D New View 5010 interferometer profiler high resolution data of defect induced roughness in the crack process zone under fatigue crack path revealed the existence of two characteristic scales: the scale of the process zone and the correlation length that is the scale when the correlated behavior of defect induced roughness has started.
引用
收藏
页码:443 / 446
页数:4
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