Transient phenomenon of longitudinal flexural coupled vibrations in a small rectangular piezoelectric ceramic plate (8 mm×2.16 mm×1 mm)

Abstract

The coupling between two vibration modes is usually fixed when the working frequency is determined. However, in this letter, we report a transient coupled vibration phenomenon occurring between second bending and first longitudinal resonant frequencies in a small rectangular piezoelectric ceramic plate (8 mm×2.16 mm×1 mm). At some frequencies, the transient coupled vibration amplitude may increase to a certain level, and at other frequencies, it decreases its vibration amplitude. These experimental results may be helpful to understand the real essence of piezoelectric phenomenon in piezoelectric ceramics and to find applications for small rectangular piezoelectric ceramic plates.