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Fatigue of 316L stainless steel notched

Abstract : The aim of the present paper is to provide an in-depth analysis of the fatigue-life assessment for μm-size 316L stainless steel components. Such components find typical applications in the biomedical field, e.g., in cardiovascular stents. To this purpose, the present work analyzes experimental data on 316L stainless steel from literature for smooth and notched μm-size components using a global computational approach. Several aspects are discussed: (i) the choice of an appropriate constitutive law for cyclic material behavior, (ii) fatigue criteria based on shakedown concepts for finite and infinite lifetime, in particular distinguishing between low, high and very high-cycle fatigue regimes (denoted as LCF, HCF and VHCF, respectively), and (iii) gradient effects in relation with hot-spot as well as average or mean volume approaches for the lifetime estimation. The results give a new insight into the lifetime design of μm-size components and could be directly applied for the fatigue-life assessment of small size structures as, for instance, cardiovascular 316L stainless steel stents.
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Submitted on : Sunday, May 17, 2020 - 7:11:52 PM
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Ferdinando Auricchio, Andrei Constantinescu, Giulia Scalet. Fatigue of 316L stainless steel notched. International Journal of Fatigue, Elsevier, 2014, 68, pp.231-247. ⟨10.1016/j.ijfatigue.2014.04.013⟩. ⟨hal-01219711⟩



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