|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Environmentally Assisted Cracking: Theory and Practice
||Assessing the Fracture Strength of Geological and Related Materials via an Atomistically Based J-integral
||Reese Jones, Louise Criscenti, Jessica Rimsza
|On-Site Speaker (Planned)
Predicting fracture initiation and propagation in low-permeability geomaterials is a critical yet unsolved problem crucial to assessing shale caprocks for carbon sequestration and controlling fracturing for oil extraction. Experiments indicate that chemical reactions at fluid-geomaterial interfaces play a major role in subcritical crack growth. Engineering the subsurface fracture environment, however, has been hindered by a lack of understanding of the mechanisms relating chemical environment to mechanical outcome. We have developed an atomic-level understanding of the chemical-mechanical mechanisms that control subcritical cracks through coarse-graining reactive molecular simulations. With field estimators consistent with continuum conservation properties we are able to connect atomistic data to configurational-forces and fracture resistance. In order to trust this connection we have performed theoretical consistency tests and validation with experimental data. Although we have targeted geomaterials, this capability can have direct impact on other unsolved technological problems such as predicting the corrosion/embrittlement of metals and ceramics.
||Planned: Supplemental Proceedings volume