ProgramMaster Logo
Conference Tools for MS&T22: Materials Science & Technology
Login
Register as a New User
Help
Submit An Abstract
Propose A Symposium
Presenter/Author Tools
Organizer/Editor Tools
About this Abstract
Meeting MS&T22: Materials Science & Technology
Symposium Journal of the American Ceramic Society Awards Symposium
Presentation Title Initial Fragmentation and Granular Transition of Ceramics
Author(s) Lori Graham-Brady, Amartya Bhattacharjee, Ryan Hurley
On-Site Speaker (Planned) Lori Graham-Brady
Abstract Scope As armor ceramics are impacted, crack growth and coalescence lead to an initial state of fragmentation, causing a granular medium that resists penetration through various energy dissipation mechanisms, such as granular friction and re-fragmentation. The fragmented material also abrades the penetrator itself. Hence, initial fragmentation and granular transition of ceramics play a vital role in the penetration resistance of ceramics. Instantaneous crack statistics predicted from a previously developed crack growth model, modified to account for flaw orientation distribution, are used as inputs to a fragmentation and crack coalescence model to predict fragment statistics. Cracks are modelled discretely in a voxellized simulation region with periodic boundary conditions. Neighboring cracks are allowed to coalesce. Fragments are delineated using a connected region approach, with morphological dilation to compensate for resolution effects. Fragment size and shape distribution, are used to conduct parametric studies and propose a microstructure dependent granular transition criterion.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Flash Sintering: A Paradigm Shift for Processing of Ceramics
Historical and Basic Introduction to Antiferroelectrics
Initial Fragmentation and Granular Transition of Ceramics
Micromechanics of Machining and Wear in Hard and Brittle Materials
Models for the Behavior of Boron Carbide in Extreme Dynamic Environments
Observation of the Electromechanical Responses of (Na,K)NbO3 under Combined External Mechanical and Thermal Fields
Synthesis of β-MoO3 Whiskers by Thermal Evaporation Method and Its Application in Production of 99Mo/99mTc
Synthesis, Densification, Microstructure, and Mechanical Properties of High-entropy Carbide Ceramics
Unique Performance of Thermal Barrier Coatings Made of Yttria Stabilized Zirconia at Extreme Temperatures (> 1500°C)

Questions about ProgramMaster? Contact programming@programmaster.org