Table 3.

The vibration amplitude of the ultrasonic transducer under different waveform and frequency.

Waveform	Frequency (kHz)	Amplitude 1 (mm)	Amplitude 2 (mm)	Amplitude 3 (mm)	Average Value (mm)
Cosine wave	15	0.008	0.006	0.008	0.0073
	20	0.006	0.006	0.006	0.006
	25	0.004	0.004	0.004	0.004
Triangular wave	15	0.006	0.006	0.006	0.006
	20	0.006	0.006	0.004	0.0053
	25	0.004	0.004	0.004	0.004
Square wave	15	0.012	0.012	0.010	0.0113
	20	0.010	0.008	0.008	0.0087
	25	0.006	0.008	0.008	0.0073