Acoustic Emission Measurement by Fiber Bragg Grating Glued to Cylindrical Sensor Holder

Figure 11

Frequency sensitivity characteristics of C-FBG sensor. The sensitivity for each frequency is evaluated by the S/N ratio. The character of the sensor is the wide-band type if the fluctuation is small. From the standard deviation and S/N ratio, the C-FBG sensor has the characteristics of the wide-band type.