Frequency response of a magnetostrictive wire-polymer composite

Sauviz P. Alaei, Thomas I. Richardson, E. Dan Dahlberg

Research output: Contribution to journalArticlepeer-review

Abstract

The frequency-dependent magnetostriction of five samples of a ferromagnetic steel wire-polymer composite was investigated from 3 to 70 Hz. The volume fractions, or "loadings,"of steel wires in the samples were 0.02, 0.05, 0.07, 0.10, and 0.20. All samples exhibited a resonance at about 40 Hz, with damping and magnetostriction that generally increases with increased wire loading. A decrease in the overall magnetostriction of the 0.20 loading sample is attributed to mechanical blocking of the wire rotations in the polymer. The loading-dependent damping and an unexpected low-frequency behavior were explained by the time-dependent magnetic response of the wires.

Original languageEnglish (US)
Article number205105
JournalJournal of Applied Physics
Volume129
Issue number20
DOIs
StatePublished - May 28 2021

Bibliographical note

Funding Information:
The authors thank Jason Cleveland and Peter Saulson for useful discussions. This work was supported by NSF (Grant No. DMR 1609782) and the University of Minnesota’s Undergraduate Research Opportunities Program.

Publisher Copyright:
© 2021 Author(s).

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