FATIGUE CRACK TIP PLASTICITY RESULTING FROM LOAD INTERACTIONS IN AN ALUMINUM ALLOY
作者： D. L. DAVIDSON , J. LANKFORD
DOI: 10.1111/J.1460-2695.1979.TB01331.X
关键词: Crack closure 、 Crack tip opening displacement 、 Stress ratio 、 Composite material 、 Materials science 、 Fatigue testing 、 Structural engineering 、 Aluminium 、 Powder metallurgy 、 Alloy 、 Plasticity
摘要: Displacements in the region very near to a fatigue crack tip have been observed using stereoimaging technique. The results of changing minimum/maximum stress ratio, for single overload and underload are given powder metallurgy aluminum alloy. Material motions complex depend on loading characteristic. Compressive strain fields unloaded state were found be highly dependent load characteristic due variation reversed plasticity.
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