Recent results on the brittle fracture of terfenol-D specimens under magnetic field

Marco Colussi, Filippo Berto, Kotaro Mori, Fumio Narita

研究成果: Article査読

抄録

The following investigation has the purpose of describing, both experimentally and numerically, the fracture behavior of a giant magnetostrictive alloy commercially known as Terfenol-D. Single-edge precracked specimens have been analyzed via three-point bending tests, measuring fracture loads in the presence and absence of a magnetic field at various loading rates. The Strain Energy Density (SED), averaged in a finite control volume, has recently proved to be an excellent method of predicting brittle failures of cracked, U- and V-notched specimens made out of different materials. The effects of the magnetic field and of the loading rate on Terfenol-D failures have been studied, as well as discussing the ability of SED criterion to seize these effects, by performing coupled-field finite element analyses. Finally, a relationship between the size of the SED’s control volume and the loading rate has been proposed and failures have then been estimated in terms of averaged SED.

本文言語English
ページ(範囲)1239-1246
ページ数8
ジャーナルAmerican Journal of Engineering and Applied Sciences
9
4
DOI
出版ステータスPublished - 2016

ASJC Scopus subject areas

  • コンピュータ サイエンス(全般)
  • 環境工学
  • 化学工学(全般)
  • 地盤工学および土木地質学
  • エネルギー工学および電力技術
  • 工学(全般)

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