Degree Type

Dissertation

Date of Award

2004

Degree Name

Doctor of Philosophy

Department

Electrical and Computer Engineering

First Advisor

David C. Jiles

Abstract

An accurate model description of the effects of stress on magnetic properties of materials has become increasingly important in situations where the performance characteristics of magnetic materials, such as magnetostrictive sensors or actuators, can be described and if the theoretical model is physically sound, properties and performance outside of a known range of conditions can also be successfully predicted.;This work reports on the recent investigation on the stress dependent hysteresis and magnetomechanical effects of ferromagnetic materials. The magnetic properties of several materials, such as nickel, both cold-worked and annealed, and steel, under various stresses were measured and modeled using an improved model theory.;By investigating the previous model theories, this work gave a new way to modify the existing and currently used models for describing the effects of applied stresses on magnetization of materials.

DOI

https://doi.org/10.31274/rtd-180813-8795

Publisher

Digital Repository @ Iowa State University, http://lib.dr.iastate.edu

Copyright Owner

Lu Li

Language

en

Proquest ID

AAI3158353

File Format

application/pdf

File Size

144 pages

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