Modeling the Effect of Porosity on the Elastic Properties of Synthetic Graphite Using CT Scans and the Finite Element Method
Predicting the physical properties and performance of carbon and graphite materials based on the microstructure of the finished material is a challenging endeavor. This paper discusses the process and workflow for measuring and analyzing the pore structure of graphite by combining advanced CT image technology with Simpleware’s ScanIP™ software. A stack of scanned CT images are imported into ScanIP™ and converted into a solid model. The images are further enhanced into a higher quality, analysis-ready mesh using Simpleware’s +FE Module. The enhanced mesh is now ready to be directly imported into COMSOL Multiphysics®. Using COMSOL, tensile stress-strain responses for three synthetic graphite samples of varying maximum grain size are simulated. The exact relationship between porosity and all properties remains an area of ongoing research.