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Fretting‐fatigue analysis of shot‐peened aluminium and titanium test specimens
Author(s) -
Vantadori Sabrina,
Zanichelli Andrea
Publication year - 2021
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/ffe.13367
Subject(s) - fretting , shot peening , peening , materials science , metallurgy , residual stress , context (archaeology) , slip (aerodynamics) , titanium alloy , aluminium , structural engineering , alloy , engineering , paleontology , biology , aerospace engineering
In the last decades, many alleviation measures were proposed in order to improve the life of fretting fatigue‐affected components. In such a context, the shot peening treatment is worth noting. Therefore, in the present paper, the fatigue life of shot‐peened aluminium and titanium alloy specimens, subject to fretting fatigue under partial slip regime, is assessed by means of the Carpinteri et al. criterion for fretting fatigue. First, according to the superposition principle, the relaxed residual stresses (due to the shot peening treatment) are combined with the stress components due to fretting fatigue loading. Then fretting fatigue assessment is performed. In such a context, a novel theoretical law for the relaxed residual stress field is here proposed, the implementation of which shows very promising results in terms of fretting fatigue life estimation of the shot‐peened specimens examined.