Procedure to Use PZT Sensors in Vibration and Load Measurements

Table 5

Accelerometer and PZT patch (healthy and damaged) response.

Frequency (Hz)	Accelerometer response (g)	Perfectly bonded PZT response (V)	Debonded PZT response (V)	CF (g/V) perfectly bonded PZT	CF (g/V) debonded PZT
20	0.048	0.78	0.26	0.061	0.184
20.5	0.066	1.10	0.36	0.060	0.183
21	0.093	1.60	0.56	0.058	0.166
21.5	0.176	3.00	0.92	0.058	0.191
22	0.600	10.8	3.28	0.055	0.182
22.5	0.230	4.30	1.36	0.053	0.169
23	0.110	2.40	0.72	0.045	0.152
23.5	0.070	1.60	0.55	0.043	0.127
24	0.050	1.30	0.40	0.038	0.125
Average				0.052	0.164