Use of Auxetic Infill Structures for the Compensation of Shrinkage in Fused Filament Fabrication Process

Date

2023-01-01

Author

Uncu, Rahman
Bacikoglu, Mehmet Canberk
Caliskan, Burak
Yaman, Ulaş

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The polymer parts fabricated by Fused Filament Fabrication (FFF) process deteriorated noticeably in terms of dimensional accuracy due to the thermal processes during the fabrication and cooling phases. Commonly, researchers tend to concentrate on modifying the CAD model or fabricating the parts larger than the nominal then post-processing the artifacts to compensate for shrinkage. This paper investigates the effects of auxetic infill structures on shrinkage compensation. Parts with different internal geometries and infill structures were designed and fabricated via FFF using polylactic acid material. Critical dimensions of these parts were measured on a Coordinate Measuring Machine to observe the effects of different infill patterns on the dimensional accuracy of the parts. Measurement results showed that using an auxetic infill pattern with a symmetrical layout improves the accuracy of the parts significantly.

Subject Keywords

Auxetic structures, Dimensional accuracy, Fused Filament Fabrication, Infill patterns, Shrinkage

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85148214903&origin=inward
https://hdl.handle.net/11511/102624

DOI

https://doi.org/10.1007/978-3-031-17629-6_15

Conference Name

31st International Conference on Flexible Automation and Intelligent Manufacturing, FAIM 2022

Collections

Department of Mechanical Engineering, Conference / Seminar

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Citation Formats

R. Uncu, M. C. Bacikoglu, B. Caliskan, and U. Yaman, “Use of Auxetic Infill Structures for the Compensation of Shrinkage in Fused Filament Fabrication Process,” presented at the 31st International Conference on Flexible Automation and Intelligent Manufacturing, FAIM 2022, Michigan, Amerika Birleşik Devletleri, 2023, Accessed: 00, 2023. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85148214903&origin=inward.