Advances in Materials Science and Engineering

Research Article

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

Figure 9

Evaluation of directionality of C-FBG sensor. The S/N ratios of the emitted waveform from each angle are shown. The directionality of the FBG was removed by using a cylindrical holder because the ratios are constant at each angle.
274071.fig.009a
(a) Examples of detected AE waveforms by C-FBG sensor in Figure 3
274071.fig.009b
(b) S/N ratios of detected waveforms by C-FBG sensor in Figure 3