A novel thickness polarized d15 shear piezoelectric fiber composites

As smart materials, piezoelectric ceramics played an important role in actuation, sensing, structural health monitoring and vibration damping systems. This letter reports a novel structure of shear piezoelectric fiber composites (SPFC), which was polarized in the thickness direction, and drived on the transverse direction with interdigitated electrodes. Under a driving condition of 270 V at 0.1 Hz, a fixed SPFC showed a shear strain of 176.5 ppm and a Mylar membrane cantilever beam structure exhibited a tip displacement of 0.343 mm, corresponding to an effective piezoelectric constant d15 of 400 pm/V. These results provide a novel idea for the SPFC applied in actuation and vibration control areas.