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On the Evaluation of Surface Fatigue Strength of a Stainless-Steel Aeronautical Component

Department of Engineering, University of Perugia, 06125 Perugia, Italy
UmbraGroup S.p.A, Via V. Baldaccini 1, 06034 Foligno (PG), Italy
Italian AirForce, Flight Test Center, Technology Material for Aeronautics and Space Department, Military Airport M. De Bernardi, via Pratica di Mare, 000040 Pomezia (RM), Italy
Author to whom correspondence should be addressed.
Metals 2019, 9(4), 455;
Received: 8 March 2019 / Revised: 2 April 2019 / Accepted: 15 April 2019 / Published: 17 April 2019
(This article belongs to the Special Issue Manufacturing and Application of Stainless Steels)
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In this paper, a novel method for the evaluation of the surface fatigue strength of a stainless-steel component is proposed. The use of stainless steel is necessary indeed, whenever a component has to work in a particularly aggressive environment that may cause an oxidation of the component itself. One of the major problems that affect stainless-steel components is the possible wear of the antioxidant film that reduces the antioxidant properties of the component itself. One of the main causes that can lead to wear is related to the surface corrosion that occurs every time two evolving bodies are forced to work against each other. If the antioxidant film is affected by surface fatigue problems, such as pitting or spalling, the antioxidant capacities of this type of steel may be lost. In this context, it is, therefore, necessary to verify, at least, by calculation that no corrosion problems exist. The method proposed in this activity is a hybrid method, numerical-theoretical, which allows to estimate the surface fatigue strength in a very short time without having to resort to finite element models that often are so complex to be in contrast with industrial purposes. View Full-Text
Keywords: stainless steel; structural dynamics; finite element explicit analysis; Hertz theory stainless steel; structural dynamics; finite element explicit analysis; Hertz theory

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Cianetti, F.; Ciotti, M.; Palmieri, M.; Zucca, G. On the Evaluation of Surface Fatigue Strength of a Stainless-Steel Aeronautical Component. Metals 2019, 9, 455.

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