Effect of the elastic modulus of the matrix on the coupling of magnetostrictive composites

Author

Busbridge, S.C. ; Kurdiyeh, N. ; Guo, Z.J. ; Wang, B.W. ; Piercy, A.R.

Author_Institution

Sch. of Eng., Brighton Polytech., UK

Volume

36

Issue

5

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

3235

Lastpage

3237

Abstract

The magnetomechanical coupling coefficient, k₃₃, has been modeled as a function of the elastic modulus of the matrix, E_m, of composite magnetostrictive materials. Measurements of k₃₃ have been performed by a three-parameter technique on glass-matrix Terfenol-D composites fabricated from powders heated to 700°C in an inert atmosphere under the application of a 1-3 kN force. It is concluded that there is a value of E_m for optimum magnetomechanical performance which is dependent on the volume fraction, V_f. The optimum value of E_m is close to, but less than, the elastic modulus of the magnetostrictive material

Keywords

composite materials; elastic moduli; magnetostriction; (TbDy)Fe₂; 700 C; composite magnetostrictive material; elastic modulus; glass-matrix Terfenol-D composite; magnetomechanical coupling coefficient; three-parameter technique; volume fraction; Atmospheric measurements; Atmospheric modeling; Composite materials; Couplings; Force measurement; Magnetic materials; Magnetoelasticity; Magnetostriction; Performance evaluation; Powders;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.908751

Filename

908751