Analysis and optimization of the magnetomechanical properties of terfenol-D composites at audio frequencies

M. Pasquale, C. Sasso, S. H. Lim

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The magnetic and magnetostrictive properties of polymer-bonded Terfenol-D rods, compacted from powders with different phenol binder content, are measured in static and dynamic conditions. Magnetic measurements were made up to 40 kHz using a custom made amorphous yoke. Magnetostrictive characterization was performed with prestress up to 15 Mpa in quasi-static and dynamic conditions (up to 40 Hz). A maximum deformation of about 6 × 10-4, producing work, can be achieved with a variable phenol content. Dynamic magnetic properties were simulated using the dynamic Freisach model, obtaining an estimate value for conductivity. The inclusion of a non-conductive phenol binder increases the mechanical strength and favors a reduction of eddy current losses, for applications at sonic or ultrasonic frequency.

Original languageEnglish
Pages (from-to)3829-3831
Number of pages3
JournalIEEE Transactions on Magnetics
Volume35
Issue number5 PART 2
DOIs
Publication statusPublished - 1999 Dec 1

Keywords

  • Dynamic characterization
  • Hysteresis modeling
  • Polymer-bonded composites
  • Preis ach modeling, giant magnetostriction
  • Terfenol-D

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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