Question

Determine the magnitude of polarization (in C/m2) in a material if it is stressed 4.72 GPa perpendicular to the poling axis. (Answer format X.XXX)

d3,1 = 187 x 10-12 m/V

d3,3 = 219 x 10-12 m/V

Answer 1

Theory:

Directions of X,Y and Z are represented by subscript 1, 2 and 3 respectively and shear about one the axes are represented by the subscrit 4,5 and 6 respectively.

The piezoelectric constant, (d) is described as the polarization originated per unit of mechanical stress (T), applied to piezoelectric material having density and length l ao in another way, experience mechanical strain (s) per unit of applied electric field

Here, the first subscript indicates the direction of polarization (electric field E=0),