Damage Detection in CFRP Plates Using Spectral Entropy

Table 2

Properties and positions of piezoelectric sensors and actuators.

Use	Ceramics	Electrode	Thickness	Diameter	Positions	Notation
Actuator	PIC255	Ag	0.5 mm	20 mm	(42.5, 32.5) cm	A1
Sensor	PIC151	Ag	0.5 mm	10 mm	(24.5, 21.5) cm	S1
					(24.5, 43.5) cm	S2
					(60.5, 21.5) cm	S3
					(60.5, 43.5) cm	S4