[Faculty] Fwd: [CSRC.COLLOQUIUM] "Silica-Based Glasses: Realizing Process-Structure-Property Connections Through Computational Modeling"

[Jose Castillo]

[image: SDSU_CSRC Logo.jpg]



DATE:
*Friday, May 29, 2020*



TITLE:

*Silica-Based Glasses: Realizing Process-Structure-Property Connections
Through Computational Modeling*


TIME:
*3:00-4:00PM*




LOCATION:
Join Zoom Meeting -  https://SDSU.zoom.us/j/99859040967
<https://sdsu.zoom.us/j/99859040967>



SPEAKER/BIO:

*Dr. Mark Wilson, Computational Materials and Data Science, Sandia National
Laboratory*





ABSTRACT:

Silica-based glasses are increasingly becoming vital components in our
current technology, from data transmission lines, to electronics, to
optical lenses, to smartphone screens. These materials are inherently
brittle and subject to failure under shock, non-equilibrium stress states,
or corrosive environments. Identifying new compositions and processing
conditions that result in improved fracture resistance (i.e. a higher
fracture toughness) is achievable through materials design approaches.
However, discovery primarily remains an empirically determined procedure.
Atomistic molecular dynamics can be a powerful tool in this application,
providing a capability to probe how glass breaks and what compositions or
microstructural features result in better material performance. In this
talk, a novel numerical method to determine the fracture toughness from
atomistic material representations will be demonstrated on vitreous
silica-based glass compositions. Process-structure-property connections
will then be explored using this measure to highlight the relationships
between processing conditions, chemical composition, microstructural
content, and material performance.

Sandia National Laboratories is a multi-mission laboratory managed and
operated by National Technology and Engineering Solutions of Sandia, LLC.,
a wholly owned subsidiary of Honeywell International, Inc., for the U.S.
Department of Energy’s National Nuclear Security Administration under
contract DE-NA0003525.




Host: Jose Castillo and Arlette Baljon

Note: Recent videos from previous colloquium talks for Spring 2020 can be
seen on the CSRC website in the colloquium archive section or on the CSRC
YouTube page here
<https://www.youtube.com/channel/UCN0ZEztlmyDqG2pm-Rle_Eg/feed>.

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