Guided Wave Analysis
GW Inspection GW Monitoring CUI Inspection Buried Pipeline Road Crossing Pipe Support

Buried Pipeline Inspection

    The attenuation is higher with increasing wave frequency and soil depth. Coating and insulation also increases the wave attenuation. It will be higher than a bare or painted pipe. The below data were plotted to show the soil effect on wave propagation. The top plot shows the data of 20- kHz torsional mode from a 4.5-inch-OD bitumen coated pipe without soil cover. The bottom was acquired after a 3.2-ft soil covering. The attenuation was significantly increased due to guided-wave energy leakage to the soil.


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