| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Emergent Materials under Extremes and Decisive In Situ Characterizations
|
| Presentation Title |
A Universal Model for the Compressive Strength of Advanced Ceramics |
| Author(s) |
Arezoo Zare, Dimitrios G. Giovanis |
| On-Site Speaker (Planned) |
Arezoo Zare |
| Abstract Scope |
Advanced ceramics, such as boron carbide (B4C), are the material of choice for lightweight high-strength structural components used in defense, aerospace, and automotive. Despite their brittle nature, these ceramics can be engineered to maintain their structural integrity when subjected to mechanical loads during service. This is made possible by models of brittle failure that describe the correlations between a ceramic’s microstructure and its compressive strength. These models have been used to predict the microstructural alterations that would be needed to avoid or delay brittle failure for a desired state of stress and strain rate. Ceramics with improved mechanical response under quasi-static loads have been successfully designed using these models and verified experimentally. However, improvements under dynamic and shock loading have been marginal at best. Our study aims to improve dynamic load response by developing a universal model that maps the ceramic microstructure (design space) to its compressive strength (application space) across strain rates ranging from quasi-static to dynamic. This model accelerates the ability of materials engineers to create ceramics with a significantly improved mechanical response to dynamic loads while expanding their reliable applications. |