Schematic diagram of the proposed one-dimensional pencil-like magnetoelectric (ME) sensor.
The simplified equivalent physics model for the pencil-like ME sensor.
ME field coefficients of the pencil-like sensors as a function of: (a)the thickness ratio with a fixed diameter ratio of 10 and (b) the diameter ratio with a fixed thickness ratio of 100. The maximum allowable compressive stress in the piezoelectric disk is kept at 80 MPa for PZT-4 and 40 MPa for PZT-5H, respectively.
Calculated ME field coefficients of the sensors and the compressive stresses in the P phase as a function of the applied dc bias magnetic field with the fixed thickness ratio of 100: using the cylinder design of = 1 in (a) and (b) and using the pencil-like design of = 10 in (c) and (d).
Calculated ME coupling properties of the pencil-like sensor as a function of the applied magnetic field with different frame stiffnesses of ; , , ; (a) and (b)ME field coefficients and the stresses in the PZT-4; (c) and (d) ME charge density coefficients and the stresses in the PZT-4.
Material constants for PZT-4/PZT-5H and Terfenol-D used for theoretical calculations.
Article metrics loading...
Full text loading...