Automatic Leak Detection in Buried Plastic Pipes of Water Supply Networks by Means of Vibration Measurements

Figure 9

PSD of aggregated signals from datasets (a) DS 2, (b) DS 3, (c) DS 5, (d) DS 7, (e) DS 10, (f) DS 11, (g) DS 12, and (h) DS 13.

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(b)

(c)

(d)

(e)

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(h)