A semiquantitative analytic model for the magnetic response of a Terfenol-D impregnated composite specimen under tension

Abstract

Magnetostrictive composites have found increasing use as a tagging agent for structural integrity monitoring. A simple magnetic model based on Heisenberg–Weiss theory is put forth that provides guidance as to the physical parameters that govern the magnetic response of a Terfenol-D impregnated composite specimen in tension. Further, the model provides an effective analytic parameterization of the magnetic response, resulting from unidirectional tension, and affords estimates of these parameters.

An initial experimental investigation into the change in magnetic induction of a Terfenol-D rod due to external stress

“…However, most of the results for Terfenol-D particulate composites in tension, compression and bending under different bias strains and applied fields are empirical [14][15][16]. Feickert [17] describes a simple model for the magnetic response of a Terfenol-D impregnated composite specimen in tension. Giurgiutiu et al [18] experimentally investigated the magnetic response due to bending of such composite specimens.…”

Investigation of Terfenol-D for Magnetostrictive Tagging of Fiber-Reinforced Polymer Composites

“…The extension of magnetic domain theory from the microscopic to the macroscopic scale can be made through a semi-quantitative phenomenological approach based on the Heisenberg-Weiss Theory (Feickert et al 2000).…”