Compressive failure modes and energy absorption in additively manufactured double gyroid lattices

Ian Maskery, Nesma Aboulkhair, Adedeji Aremu, Chris Tuck, Ian Ashcroft

Research output: Contribution to journalArticle

91 Citations (Scopus)
13 Downloads (Pure)

Abstract

Lattice structures are excellent candidates for lightweight, energy absorbing applications such as personal protective equipment. In this paper we explore several important aspects of lattice design and production by metal additive manufacturing, including the choice of cell size and the application of a post-manufacture heat treatment. Key results include the characterisation of several failure modes in double gyroid lattices made of Al-Si10-Mg, the elimination of brittle fracture and low-strain failure by the application of a heat treatment, and the calculation of specific energy absorption under compression deformation (16 × 106 J m−3 up to 50% strain). These results demonstrate the suitability of double gyroid lattices for energy absorbing applications, and will enable the design and manufacture of more efficient lightweight parts in the future.
Original languageEnglish
Pages (from-to)24-29
Number of pages5
JournalAdditive Manufacturing
Volume16
Early online date3 May 2017
DOIs
Publication statusPublished - Aug 2017
Externally publishedYes

Bibliographical note

©2017 The Authors. Published by Elsevier B.V. This is an open access article under the CCBY license (http://creativecommons.org/licenses/by/4.0/)

Keywords

  • Additive manufacturing
  • Lattice
  • Gyroid
  • Selective laser melting

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