Electromechanical coupling coefficient explained

The electromechanical coupling coefficient is a numerical measure of the conversion efficiency between electrical and acoustic energy in piezoelectric materials.

Qualitatively the electromechanical coupling coefficient, k, can be described as:

k ^{-2} = (1)/(energyconvertedperinputenergy)

References

• Web site: Electromechanical coupling coefficient. https://archive.today/20120204093132/http://www.medcyclopaedia.com/library/topics/volume_i/e/ELECTROMECHANICAL_COUPLING_COEFFICIENT.aspx. dead. 2012-02-04. GE. Medcyclopaedia.
• Vilnius University, Laboratory of Physical Acoustics