Static and dynamic shear-compression response of additively manufactured Ti6Al4V specimens with embedded voids

R. Fadida, A. Shirizly, D. Rittel

Research output: Contribution to journalArticlepeer-review

Abstract

The shear-compression response of additively manufactured Ti6Al4V specimens containing discrete artificial voids is investigated under quasi-static and dynamic loadings. Specimens containing spherical voids are designed with one or three voids with variable spacing between them. Specimens containing spheroidal prolate voids are designed with different void orientations with respect to the shear direction, while the total volume fraction of all void configurations is kept constant in the whole study. It is found that the presence of the void(s) reduces the displacement to failure, compared to the dense specimens, in both quasi-static and dynamic regimes. The shape and the number of voids have a noticeable effect on results only in the quasi-static regime. However, changing the distance between the spherical voids or changing the orientation of the prolate voids does not affect significantly the load-displacement curves in both strain rate regimes. Fractographic observations show that shear-compression specimens fail dominantly by shear, whereas previously investigated shear-tension specimens fail dominantly by tension. These observations are supported by preliminary numerical simulations.

Original languageEnglish
Article number103413
JournalMechanics of Materials
Volume147
DOIs
StatePublished - Aug 2020

Keywords

  • Additive manufacturing
  • Artificial porosity
  • Dynamic
  • Laser powder bed fusion
  • Shear compression
  • Shear tension
  • Static
  • Ti6Al4V

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Instrumentation
  • General Materials Science

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