Abstract: Analytic Mathematical Models for Fracture Growth Due to Hydrogen Embrittlement.
Dr. A. Balueva, J. Magaña, 2019
Prepared for ARC, 2019.
Hydrogen Embrittlement, or Hydrogen Induced Cracking (HIC), is a physical phenomenon that affects structural steel in pipelines, and other applications, which are subject tothe diffusion of gaseous hydrogen. Over the last two decades, a great amount of research has focused on understanding the basic mechanisms that govern HIC. The ability to reliably predict the growth-rate of a Hydrogen-driven fracture is key to developing safe and efficient practices in the natural gas industry and other operations in which HIC is a common occurance.
The aim of our research is to propose a mathematical model that predicts the size of the fracture opening as a function of time. We derive this model analytically, first modeled under ideal gas, and again under non-ideal gas. A physical justification is provided for our model. With our resultant equations, we calculate the expected crack-growth for a real-life example, using known data. We conclude with a discussion about crack-propagation under very high pressures, limitations for the model, and generalization for the future.
This is a metadata-only record.
- Event location
- Event date
22 March 2019
- Date submitted
19 July 2022
- Additional information
Dr. Alla Balueva