TY - GEN T1 - Analytic Mathematical Models for Fracture Growth Due to Hydrogen Embrittlement AU - Magaña, Jerry P. AU - Balueva, Alla AB - 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. DA - 2019-3-22 PY - 2024 PB - unav N1 -

Acknowledgements:

Dr. Alla Balueva

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