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

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

170
views

0
downloads

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

Suggestions

OpenMETU
Core

Use of Fused Filament Fabrication and Stereolithography Methods for the Additive Manufacturing of Horn Antennas Caliskan, Burak; Capraz, Kenan; Yaman, Ulaş (2023-01-01) Additive Manufacturing (AM) is a rapidly developing set of methods with lots of benefits. This technology promises fast, cheap and lightweight fabrication for the antennas and waveguides. Different AM technologies such as Fused Filament Fabrication (FFF), Stereolithography (SLA), Material Jetting and Powder Bed Fusion are used to fabricate antennas operating at various frequency bands and provide desirable results. To test the feasibility of the AM technologies for antenna manufacturing, a specific antenna ...
Development of a three-dimensional basin model to evaluate the site effects in the tectonically active near-fault region of Gölyaka basin, Düzce, Turkey Yousefi-Bavil, Karim; KOÇKAR, MUSTAFA KEREM; Akgün, Haluk (2022-01-01) © 2022, The Author(s), under exclusive licence to Springer Nature B.V.The high seismicity and tectonic activity of the study area located in a near-fault region in Gölyaka, Düzce, results in a bedrock geometry highly complex in the sense of faulting and deformation. This makes this area very challenging in terms of a site response study that would aid seismic hazard assessment. This study develops a basin model to evaluate the site effects in the tectonically formed Plio-Quaternary fluvial sedimentary layer...
Role of formulation additives on the properties of thermoplastic polyether ester elastomer-based and carbon fabric-reinforced multilayer composites Yasar, Miray; Celebi, Hande; Bayram, Göknur (2022-01-01) © The Author(s) 2022.In this study, multilayer carbon fabric-reinforced composites (CFRC) were manufactured by compression molding technique with the combination of carbon fabric and thermoplastic polyether ester elastomer (TPEE) composites. The TPEE-based polymer layers were prepared as binary, ternary, and quaternary composites using carbon black (CB) or N-(β-aminoethyl)-γ-aminopropyl-trimethoxysilane (AEAP) modified carbon black (mCB), ethylene-glycidyl methacrylate copolymer (EGMA) and/or paraffin oil. ...
Design of a linear to circular polarization converter integrated into a concrete construction for radome applications Öztürk, Murat; Sevim, Umur Korkut; Altlntaş, Olcay; Ünal, Emin; Akgöl, Oguzhan; Karaaslan, Muharrem; Sabah, Cumali (2021-01-01) © 2021 The Author(s). Published by Cambridge University Press in association with the European Microwave Association.In this paper, we present a linear to circular polarization converter integrated in a concrete structure to eliminate signal transmission problem originated from the concrete buildings in microwave regime. Two polarization converter samples and a control specimen made by traditional concrete are designed and their signal transmission responses are compared experimentally. Axial ratio values w...
Prediction of yields and composition of char from fast pyrolysis of commercial lignocellulosic materials, organosolv fractionated and torrefied olive stones Magalhães, Duarte; Gürel, Kaan; Matsakas, Leonidas; Christakopoulos, Paul; Pisano, Italo; Leahy, J.J.; Kazanç Özerinç, Feyza; Trubetskaya, Anna (Elsevier BV, 2021-04-01) © 2020 The Author(s)This study investigated the fast pyrolysis behaviour of torrefied olive stones, fractionated olive stones and lignocellulosic commercial compounds. Olive stones were reacted in a continuous industrial torrefaction unit. The olive stones were also fractionated into their main components in an organosolv reactor at temperatures from 170 to 190 °C in both the presence and absence of an acidic catalyst. All samples were reacted in a wire mesh reactor at different temperatures (800–1150 °C) a...

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.