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

<table>Evaluation for frequency sensitivity. Vacuum grease contacts both the vibrator and C-FBG sensor. It is concluded that the characteristic of C-FBG sensor is a wide-band type if the frequencies of the detected waveforms are similar to the input frequencies.</table>

Advances in Materials Science and Engineering

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Figure 4

Figure 4: Acoustic Emission Measurement by Fiber Bragg Grating Glued to Cylindrical Sensor Holder 