Title :
Conversion Theory of Magnetic Anisotropy Sensor
Author :
Kishimoto, S. ; Hanabusa, M. ; Wakiwaka, H. ; Yamada, H.
Author_Institution :
Hitachi Electronic Engineering Co., Ltd.
fDate :
3/1/1992 12:00:00 AM
Abstract :
A magnetic anisotropy sensor (MAS) enables the noncontact measurement of mechanical stress in ferromagnetic materials. This paper deals with the conversion theory of the MAS output voltage, utilizing a directional permeability distribution which assumes an elliptical form in the specimen. The relative permeability is proportional to the stress, and the theoretical expression for the output voltage is derived from the concept of a directional permeability distribution. The calculated values for the output voltage are comparatively close to measured values due to changes in stress.
Keywords :
Magnetic anisotropy; Magnetic cores; Magnetic flux; Magnetic materials; Magnetic sensors; Permeability; Shape measurement; Stress measurement; Tensile stress; Voltage;
Journal_Title :
Magnetics in Japan, IEEE Translation Journal on
DOI :
10.1109/TJMJ.1992.4565371