About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
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Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
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Presentation Title |
Morse-code Inspired Architectures to Improve Damage Resistance of 3D Printed PLA |
Author(s) |
Deepesh Yadav, Balila Nagamani Jaya |
On-Site Speaker (Planned) |
Balila Nagamani Jaya |
Abstract Scope |
In this study, holes and splats have been architectured to improve the damage resistance of 3D-printed poly-lactic acid (PLA). The hole-like features act as crack arrestors by blunting and the splat-like features work as crack deflectors. A combination of simulations and experiments have been performed to determine the effect of the size and arrangements of features on crack driving force and fracture resistance. Crack initiation resistance has been defined in terms of initiation work of fracture (WOFo) and overall damage tolerance in terms of total work of fracture (WOFT). WOFT is the lowest for bulk and highest for a combination of alternative layers of splats and holes (SH), with a 1172% increase observed from WOFo to WOFT for the SH arrangement. This indicates that a dash-dot like Morse Code architecturing is an effective means to improve the overall damage tolerance of 3D-printed structures. |
Proceedings Inclusion? |
Planned: |
Keywords |
Polymers, Other, Other |