Fracture Behavior of Cracked Giant Magnetostrictive Materials in Three-Point Bending under Magnetic Fields: Strain Energy Density Criterion

Marco Colussi, Filippo Berto, Kotaro Mori, Fumio Narita

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

In this paper, the fracture behavior of cracked giant magnetostrictive materials has been investigated both numerically and experimentally. Works in literature have been revisited, focusing on iron and rare-earth alloys, such as Terfenol-D. Three-point bending tests have been carried out on precracked specimens and the fracture loads have been measured in the presence and absence of a magnetic field. Recent studies on local stress fields in proximity of crack tips have shown that the Strain Energy Density (SED) can be a robust parameter in the brittle fracture assessment. Coupled-field finite element analyses have then been performed and the effect of the magnetic field on Terfenol-D fracture resistance has been discussed in terms of Energy Release Rate and averaged SED.

Original languageEnglish
Pages (from-to)2063-2069
Number of pages7
JournalAdvanced Engineering Materials
Volume18
Issue number12
DOIs
Publication statusPublished - 2016 Dec 1

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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