Wave Electromechanical Coupling Factor for the Guided Waves in Piezoelectric Composites.

ABSTRACT: A novel metrics termed the 'wave electromechanical coupling factor' (WEMCF) is proposed in this paper, to quantify the coupling strength between the mechanical and electric fields during the passage of a wave in piezoelectric composites. Two definitions of WEMCF are proposed, leading to a frequency formula and two energy formulas for the calculation of such a factor. The frequency formula is naturally consistent with the conventional modal electromechanical coupling factor (MEMCF) but the implementation is difficult. The energy formulas do not need the complicated wave matching required in the frequency formula, therefore are suitable for computing. We demonstrated that the WEMCF based on the energy formula is consistent with the MEMCF, provided that an appropriate indicator is chosen for

SUBMITTER: Fan Y 

PROVIDER: S-EPMC6119889 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature