About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Poster Session
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Presentation Title |
Additive Manufacturing of Two-phase Lightweight, Stiff and High Damping Carbon Fiber Reinforced Polymer Microlattices |
Author(s) |
Zhenpeng Xu, Chan Soo Ha, Xiaoyu (Rayne) Zheng |
On-Site Speaker (Planned) |
Zhenpeng Xu |
Abstract Scope |
Carbon fiber reinforced polymer composite (CFRP) is known for its high stiffness-to-weight ratio and hence is of great interest in several engineering fields such as aerospace, automotive, and defense, etc. Such a composite is not suitable for energy dissipation as failure occurs with very little or no plastic deformation. Herein, we present an extendable multi-material projection microstereolithography process, capable of producing cellular materials reinforced by short fibers that achieve simultaneously high specific stiffness and damping coefficient. We designed and additively manufactured CFRP microlattices with soft phase architected into selected stiff-phase struts. Our results revealed that the damping performance can be significantly enhanced by the addition of only a small fraction of the soft phase. The design and additive manufacturing strategy allow for optimizing mutually exclusive properties. As a result, these CFRP microlattices achieved high specific stiffness per density comparable to commercial CFRP, technical ceramics and composites, while dissipative as elastomers. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |