We can see underground!
Underground corrosion is an invisible cause of Stobie pole collapse, threatening public safety, the environment and the State’s electricity supply.
The random corrosion phenomenon is currently assessed by unearthing the structure, which on a large-scale is costly and time-consuming. In contrast, guided waves can be generated above ground, travelling within the Stobie pole’s steel boundaries to inspect soil-embedded steel. The pole’s underground condition is evaluated by analysing wave reflections at suspected damage locations.
Developing a guided wave inspection technique would radically improve inspection efficiency: this is our research objective. State-of-the-art laser technology enabled analysis of numerous wave types. Results were verified by extensive accompanying simulations. An optimal wave type was chosen based on various signal processing techniques, enabling superior underground damage detection. These techniques could be applied to develop a more efficient structural health monitoring system for future field testing.
Our built and natural environments
Civil, Environmental and Mining Engineering