Tuesday, 31 May 2022: 11:20
West Meeting Room 112 (Vancouver Convention Center)
The corrosion in the pressurized pipelines catastrophic event, specifically in the light water reactors, ultimately leading to the failure and fracture. We develop a real-time framework for the accumulation of compressive stresses due to both corrosion (i.e. plastic) and external pressure (i.e. elastic) events. In this regard, we quantify the infiltration of the oxygen in the metal matrix within the curved boundary and establish the stoichiometrically equivalent resulted oxide thickness. Subsequently, we quantify the real-time augmentation in the volume due to oxide formation and we analytically calculate the resulted stress build-up. Combining the build-up stress with the original stress built-up due to external pressure provides the total imposed compressive stress into the material as the estimate for the onset of the failure. The developed analytical framework could be utilized for estimating the design parameters for safe operation of transport pipes, particularly in applications related to the high-pressure and highly-corrosive environments.

