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|Title:||Prediction of multiaxial fatigue life of notched maraging steel components manufactured by selective laser melting||Authors:||Branco, R.
Costa, J. D.
Jesus, J. S. de
Ferreira, J. A. Martins
|Keywords:||multiaxial fatigue; fatigue crack initiation; maraging steel; selective laser melting||Issue Date:||2022||Project:||FEDER/FCT - UIDB/00285/2020||Serial title, monograph or event:||Procedia Structural Integrity||Volume:||39||Abstract:||This paper aims at predicting the fatigue crack initiation life in maraging steel manufactured by selective laser melting under in-phase bending-torsion loading. Three relationships between the bending moment and the torsion moment were studied, namely B/T=2, B/T=1, and B/T=2/3. The tested geometries consisted of hollow cylindrical specimens with lateral holes. The crack initiation and the crack paths were detected in-situ using a high-resolution digital camera. The local stress-strain states at the notch region were accounted for using two alternative numerical models developed within linear-elastic frameworks: (1) a parametric structured mesh; and (2) an automatic unstructured mesh. Fatigue crack initiation sites and fatigue crack initiation lives were successfully predicted using both numerical models.||URI:||http://hdl.handle.net/10316/101035||ISSN:||24523216||DOI:||10.1016/j.prostr.2022.03.097||Rights:||openAccess|
|Appears in Collections:||I&D CEMMPRE - Artigos em Revistas Internacionais|
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