| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Designing Complex Microstructures through Additive Manufacturing
|
| Presentation Title |
Enhancing Mechanical Properties of Bio-inspired, 3D-printed Composites via Topological Interlocking |
| Author(s) |
Jie Yang, Chien-Chih Lin, Po-Yu Chen |
| On-Site Speaker (Planned) |
Chien-Chih Lin |
| Abstract Scope |
Enhancing fracture resistance and toughness simultaneously is a major challenge in engineering. Drawing inspiration from the diabolical ironclad beetle, which can withstand 39,000 times its body weight due to the interlocking joints within its exoskeleton, we employed a similar design strategy. Utilizing multi-material 3D printing techniques, biphasic composite materials featuring topologically interlocking patterns have been fabricated. Furthermore, a systematic parametric study on these composites, varying the amplitude-to-length (A/L) ratios of compliant phases, revealed more intricate and tortuous fracture paths that distribute stress more effectively. This complexity aids in spreading stress along the suture-like patterns rather than concentration, necessitating greater energy for crack propagation, thereby enhancing the material’s fracture strength by 20% and toughness by 80% compared to non-interlocking composites. This research highlights the impact of structural designs on the performance of composite materials and establishes effective design strategies to enhance the interfacial properties of materials for various applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Composites, Additive Manufacturing, Mechanical Properties |