In this paper, we study the response of a practical piezoelectric transducer, used to initiate droplet pinch-off in a capillary jet, to different driving waveforms at different frequencies. The study also examines how the piezoelectric’s response affects the jet breakup into droplets. Here we study sine wave and square wave periodic signals. The piezoelectric vibrates when a periodic voltage wi...

This paper proposes an approach for designing an efficient vibration energy harvester based on a vibro-impacting piezoelectric microcantilever with a geometric shape that has been rationally modified in accordance with results of dynamic optimization. The design goal is to increase the amplitudes of higher-order vibration modes induced during the vibro-impact response of the piezoelectric trans...

Guided waves using spatially distributed piezoelectric transducers are being applied to many structural health monitoring applications. These surface-mounted transducers, which are typically lead zirconate titanate, are generally assumed to be both undamaged and properly bonded to the host structure during usage. However, this assumption may not be valid, particularly after long-term operation ...

A smooth impact drive mechanism (SIDM) is one type of piezoelectric actuator that has been put into practical use. In previous SIDMs, soft-type multilayered piezoelectric elements with low mechanical quality factors were utilized, which meant it was difficult to generate high output power, and the multilayered structure was an obstacle to further miniaturization. We have proposed a resonant-typ...