Table 4: (a) Correlation factors (CF) for healthy beam. (b) Correlation factors (CF) for unhealthy beam.
(a)

Frequency (Hz)Accelerometer response (g)Measured strain (µε)PZT response (V)Acceleration CF (g/V)Strain CF (µε/V)

27.50.00691.11.0270.00671.07
28.00.01172.11.8360.00641.14
28.50.04287.45.9300.00721.25
29.00.01763.12.9000.00611.07

Average0.00661.132

(b)

Frequency (Hz)Accelerometer response (g)Measured strain (µε)PZT response (V)Acceleration CF (g/V)Strain CF (µε/V)

27.50.0314.72.610.01191.80
28.00.0375.93.290.01121.79
28.50.0284.62.700.01041.70
29.00.0183.21.970.00931.62

Average0.01071.72