Work

Non-local fatigue criterion based on standard deviation for notches and defects in Ti-6Al-4V

Year: 2024

Type: article

Abstract: The aim of this study is to propose a non local multiaxial fatigue criterion in order to assess the fatigue limit of stress concentrator such as notches or defects in Ti-6Al-4V. This criterion is based on the standard deviation of the stresses integrated over a given volume around the hot spot point. Up to now, the standard deviation has never been tested as an indicator of stress heterogeneity to assess fatigue life of notch components. Four parameters are necessary to identify the criterion. The criterion is first validated on notched samples based on literature results and shows very good results. A set of experimental tests is conducted on natural and artificial defects including clustering defects and demonstrates the flexibility and accuracy of the criterion.

Source: Journal of Theoretical Computational and Applied Mechanics

DOI: 10.46298/jtcam.12473

Authors: Natan Bodlet, Rémi Amargier, Yves Nadot

Institutions: Institut Pprime, Airbus (France)

Language: English

Topic: Fatigue and fracture mechanics

Subfield: Mechanics of Materials

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funders: Equipex, Agence Nationale de la Recherche

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