Study on Attenuation Properties of Surface Wave of AE Simulation Source Based on OPCM Sensor Element

Table 1

Piezoelectric ceramics’ physics and electricity performance.

Density 10^3 kg/m^3	Curie temperature: °C	Compliance constant 10^−12 m^2/N			Poisson’s ratio	Dielectric constant		Piezoelectric constant 10^−12 C/N			Coupling coefficient: %
		S11^E	S33^E	S55^E	μ	ε33^σ	ε11^σ	d31	d33	d15	k31	k33	k15
7.45	260	15	9	22	0.32	2100	2400	245	530	816	36	70	68