Computational Modeling of Glass-Ceramic Materials and Complex Glass Surfaces

Glass-ceramic materials are unique multi-phase materials consisting of one or more crystalline phases in an amorphous glassy phase. These microstructured materials can possess unique properties including increased modulus and toughness. While experiments can be performed to measure the performance of glass-ceramics compared to glasses, it is difficult to gain fundamental understanding via experiments alone. In this work, it is shown that peridynamics - a non-local theory of continuum mechanics can be leveraged to reveal toughening mechanisms in glass-ceramics. Numerical results are presented and compared to experimental data.

Multicomponent glass surfaces with complex chemical compositions develop kilovolts of charge during certain processing and handling steps. Understanding the electronic nature of a glass surface is a necessary precursor to begin engineering these materials in order to control the electrostatic surface potential. The second half of this joint talk will focus on electronic-scale modeling of glass surfaces and how the interaction with humid air changes the surface properties. Results of the calculations will then be shown in conjunction with experimental results to aid in understanding how the calculated potential differences between surfaces manifest during contact charging measurements.

Dr. Naveen Prakash received his PhD degree from Virginia Tech and subsequently carried out postdoctoral research at Sandia National Labs in Los Alamos, NM. He joined Corning at the beginning of 2019 and works at the forefront of computational fracture mechanics modeling for various Corning materials which are both in production and at research stages.

Dr. Drew Antony received his PhD degree from University of Florida and was a postdoctoral researcher at NC State's Nuclear Reactor Program. He joined Corning at the end of 2018 and uses his expertise in computational materials science to understand fundamentals of glass surfaces and their interaction with various environments including aqueous processing solutions and other contact materials.

Naveen and Drew sit next to each other at work and enjoy spending time drinking beer and hanging out when not toiling over their computational science endeavors.