Length scale parameters to estimate fatigue lifetime of 3D-printed titanium alloy Ti6Al4V containing notches in the as-manufactured condition

N. Razavi, H. Askes, F. Berto, L. Susmel*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

7 Citations (Scopus)
16 Downloads (Pure)

Abstract

The accuracy of the Theory of Critical Distances, Gradient Elasticity and the Averaged Strain Energy Density criterion in estimating fatigue lifetime of notched additively manufactured Ti6Al4V is assessed against numerous experimental results generated under load ratios equal to −1 and 0.1. The 3D-printed Ti-alloy under investigation was tested by keeping the notches in the as-manufactured condition. The common feature of the considered design approaches is that they all make use of a material length scale. The validation exercise based on the generated experimental results demonstrates that the length scale concept can be extended successfully also to the fatigue assessment of notched 3D-printed metallic components.

Original languageEnglish
Article number107348
JournalInternational Journal of Fatigue
Volume167
Issue numberPart B
DOIs
Publication statusPublished - Feb 2023

Keywords

  • Additive manufacturing
  • Averaged strain energy density
  • Critical distance
  • Gradient elasticity
  • Notch

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