In-Line Ultrasonic Monitoring for Sediments Stuck on Inner Wall of a Polyvinyl Chloride Pipe

<table class="table-group" width="800px"><tr class="fig-image" id="a"><td><img alt="731621.fig.005a" src="https://static.hindawi.com/articles/tswj/volume-2014/731621/figures/731621.fig.005a.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(a) </b>Raw signal</td></tr></table></td></tr><tr class="fig-image" id="b"><td><img alt="731621.fig.005b" src="https://static.hindawi.com/articles/tswj/volume-2014/731621/figures/731621.fig.005b.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(b) </b>Absolute signal</td></tr></table></td></tr><tr class="fig-image" id="c"><td><img alt="731621.fig.005c" src="https://static.hindawi.com/articles/tswj/volume-2014/731621/figures/731621.fig.005c.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(c) </b>Autocorrelation</td></tr></table></td></tr></table>

<table>Signals of PVC sheets (T: 3 mm/gain: 0 dB): (a) raw, (b) absolute, and (c) autocorrelation.</table>

The Scientific World Journal

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Figure 5

Figure 5: In-Line Ultrasonic Monitoring for Sediments Stuck on Inner Wall of a Polyvinyl Chloride Pipe 