About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Chemistry and Physics of Interfaces
|
| Presentation Title |
Interfacial Shear Properties between Carbon and Polycarbonate: a combined molecular dynamics and experimental study |
| Author(s) |
Bowen Cao, Alireza Zarei, Venkatesh Ananchaperumal, Istemi Ozsoy, Srikanth Pilla, Gang Li |
| On-Site Speaker (Planned) |
Bowen Cao |
| Abstract Scope |
The interface between the reinforcement and matrix of composite materials affects the load transfer and failure significantly. In this study, sandwich models of diamond-like carbon (DLC) and coarse-grained polycarbonate (CGPC) were generated and analyzed in molecular dynamics (MD) shear simulations to investigate the effects of interface roughness, shape, and polymer dispersity on mechanical behavior.
Carbon-fiber pull-out experiments were completed to validate the MD simulations. Surface profile from atomic force microscopy (AFM) images were added to the MD models, and the parameters were adjusted by matching the simulation peak shear stress with the measured interfacial shear strength (IFSS).
Larger interface roughness strengthened mechanical interlocking and resistance to sliding. Polymer dispersity also affected the response, with monodisperse systems showing higher shear stress than polydisperse systems because of more uniform load transfer. These findings show how interface structure affects composite performance and provide a combined experimental and simulation approach for interface design. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Composites, Modeling and Simulation, Mechanical Properties |