About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Presentation Title |
Size Effects on Elastic Moduli of Polymers 3D Printed by Fused Deposition Modeling |
Author(s) |
Gabriel Olaivar, Charul Chadha, Albert Patterson, Iwona Jasiuk |
On-Site Speaker (Planned) |
Gabriel Olaivar |
Abstract Scope |
This study investigates the size effect on the compressive elastic modulus of polycarbonate (PC) and thermoplastic polyurethane (TPU) materials. Cubic samples from both materials were printed in different size and layer height using fused deposition modelling. A full factorial design of experiments was used to study the relationship between material, size of cube, layer height and compressive elastic modulus. The cubic samples were first analyzed with micro-computed tomography to determine the volume fraction of voids and the geometry of the deposited material. The samples were then tested under quasi-static compression with the deflections recorded using digital image correlation. The results indicate that the compressive elastic modulus of the materials varies with the size of the printed samples. This size dependence should be considered while designing components manufactured using FDM. Further, the variation in elastic modulus can be attributed to the variation in volume fraction and the geometry of deposited material. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |