Grants and Contributions:

Grant or Award spanning more than one fiscal year (2017-2018 to 2018-2019).

Pure Technologies is a world leader in the development and application of innovative technologies forx000D
inspection, monitoring and management of critical infrastructure. Non-destructive testing (NDT), such asx000D
ultrasound techniques, can be used to estimate the wall thickness for identifying the specific areas along ax000D
pipeline that requires the immediate renewal. Compared to other conventional NDTs, ultrasound techniquesx000D
have accurate location detection, high sensitivity and efficiency, and low cost. It has received a significantx000D
attention from the industrial point of view. The signal received by the conventional ultrasound thicknessx000D
measurement device contains abundant information such as that related to the corrosion either on the coating orx000D
on the surface of the metal pipe .x000D
A key issue of measuring wall thickness with ultrasound is that the cement coating around the pipeline affectsx000D
the accuracy of the measurement. If the distance between reflected signals is shorter than half of the spatialx000D
span of the incident pulse, the echoes from various interfaces might overlap. It is often difficult to distinguishx000D
the signals due to the coating from those due to the wall. The goal of this project is to develop an advancedx000D
ultrasound thickness measurement system integrating with effective signal processing methods for identifyingx000D
the reflected signals of interest to accurately assess the pipe wall. We will also assess if an ultrasound arrayx000D
system can improve the detectability of the coating layer.