Fretting‐fatigue analysis of shot‐peened aluminium and titanium test specimens. Issue 2 (18th October 2020)

• Record Type: Journal Article
• Authors: Vantadori, Sabrina; Zanichelli, Andrea
• Is Part Of: Fatigue & fracture of engineering materials & structures. Volume 44:Issue 2(2021)
• Page Start: 397
• Page End: 409
• Publication Date: 2020-10-18
• Subjects: Al7050‐T7451 alloy -- fretting fatigue -- relaxed residual stress -- shot peening -- Ti6Al4V alloy; Materials -- Fatigue -- Periodicals; Fracture mechanics -- Periodicals; 620.1123
• DOI: 10.1111/ffe.13367
• Languages: English
• ISSNs: 8756-758X

Abstract

Abstract: 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.