Development of an Optical Fiber Sensor Interrogation System for Vibration Analysis
Table 1
Estimated resonance frequencies and damping values.
Mode
Accelerometer
FBG sensor
Difference, in %
, in Hz
, in %
, in Hz
, in %
First bending
22,7
1,9
22,7
1,8
0
5,3
Second bending
145,2
2,1
144,4
2,1
0,6
0
First torsion
206,5
1,5
206,6
1,4
0
6,7
Third bending
323,4
0,6
323,6
0,6
−0,1
0
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