Research Article

Pressure Pulsation Signal Analysis for Centrifugal Compressor Blade Crack Determination

Figure 4

Frequency spectrum analysis: (a) time domain signal for the noise interference signal; (b) spectrum analysis for the noise interference signal; (c) enlarged frequency area for the carrier frequency area.
862065.fig.004a
(a)
862065.fig.004b
(b)
862065.fig.004c
(c)