4 papers
A Combined Microbeam and Phase-Field Approach to Identify the Toughness and Ultimate Strength of Amorphous Silica
Gustavo Alberto Rosales-Sosa, Gergely Molnar, Yoshinari Kato +7
This work presents a new approach to evaluating the toughness, described by the critical energy release rate (), and ultimate tensile strength () of amorphous silica (SiO…
Fracture initiation in silicate glasses via a universal shear localization mechanism
Matthieu Bourguignon, Gustavo Alberto Rosales-Sosa, Yoshinari Kato +6
Shear bands lie at the root of fracture initiation in bulk metallic glasses and amorphous polymers. For silicate glasses, in contrast, studies have largely emphasized permanent vol…
Origins of phase-field crack widening in dynamic fragmentation explained
Shad Durussel, Gergely Molnár, Jean-François Molinari
We investigate dynamic crack propagation and fragmentation with the phase-field fracture approach. The method was chosen for its ability to yield crack paths that are independent o…
How glass breaks -- Damage explains the difference between surface and fracture energies in amorphous silica
Gergely Molnár, Etienne Barthel
The difference between free surface energy and fracture toughness in amorphous silica is studied via multi-scale simulations. We combine the homogenization of a molecular dynamics…