A Novel Circular Plate Acoustic Energy Harvester for Urban Railway Noise

Table 1

Parameters of the PZT-5H piezoelectric film.

Parameters	Unit	PZT-5H	Brass
Density	kg/m^3	7600	8920
Elastic modulus	GPa	60.6	106
Poisson’s ratio	/	0.34	0.35
Piezoelectric constant	m/V	274e^−12	/
Dielectric constant	F/m	3.363e^−8	/
Elastic compliances constant	m^2/N	16.5e^−12	/