Self-Sensing in Composite Repairs of Corrosion Defects

Under Development

University of Tulsa More »

Pipeline and Hazardous Materials Safety Administration (PHMSA)

Damage Prevention and Mitigation -- Damage Mitigation and Repair

The PHMSA-funded technology focused on the investigating scaling and self-sensing in composite repairs of corrosion defects. Scaling was researched through a fatigue test program that compared the performance of patch-type composite repairs on small-scale pipeline specimens (6-inch NPS) to the performance of the same repairs on a large-scale specimen (60-inch diameter). Self-sensing was addressed through the development and testing of a resistive-based, self-sensing composite system. The material allowed for the monitoring of the composite bond using small, low-voltage electronics.

Composite repairs of pipeline and pressure equipment are a growing segment of the corrosion mitigation industry. Use of composite repairs has expanded since the technique was introduced in the early 1990's. In addition, industry acceptance of composite repairs has grown since the initial products came on the market. Capabilities of composite repairs have increased as companies and universities have initiated research and development programs.

Increased Safety - The repair of large steel pipes and containers using patch repair reduced the corrosion threats and results in safer operation and enhanced reliability of facilities.

PHMSA, https://primis.phmsa.dot.gov/matrix/PrjHome.rdm?prj=506