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Validating a Failure Surface Developed for ABS Fused Filament Fabrication Parts through Complex Loading Experiments

Polymer Engineering Center, University of Wisconsin-Madison, Madison, WI 53706, USA
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J. Compos. Sci. 2019, 3(2), 49; https://doi.org/10.3390/jcs3020049
Received: 1 April 2019 / Revised: 18 April 2019 / Accepted: 6 May 2019 / Published: 10 May 2019
(This article belongs to the Special Issue Additive Manufacturing of Polymeric and Ceramic Composites)
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Abstract

Fused Filament Fabrication (FFF) is arguably the most widely available additive manufacturing technology at the moment. Offering the possibility of producing complex geometries in a compressed product development cycle and in a plethora of materials, it has gradually started to become attractive to multiple industrial segments, slowly being implemented in diverse applications. However, the high anisotropy of parts developed through this technique renders failure prediction difficult. The proper performance of the part, or even the safety of the final user, cannot be guaranteed under demanding mechanical requirements. This problem can be tackled through the development of a failure envelope that allows engineers to predict failure by using the knowledge of the stress state of the part. Previous research by the authors developed a failure envelope for acrylonitrile butadiene styrene (ABS) based, Fused Filament Fabrication (FFF) parts by use of a criterion that incorporates stress interactions. This work validates the first quadrant of the envelope by performing uniaxial tensile tests with coupons produced with a variety of raster angles, creating a combined loading stress state in the localized coordinate system. Results show the safe zone encompassed by the failure envelope proved adequate. View Full-Text
Keywords: failure criterion; mechanical testing; additive manufacturing failure criterion; mechanical testing; additive manufacturing
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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MDPI and ACS Style

Mazzei Capote, G.A.; Redmann, A.; Osswald, T.A. Validating a Failure Surface Developed for ABS Fused Filament Fabrication Parts through Complex Loading Experiments. J. Compos. Sci. 2019, 3, 49.

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J. Compos. Sci. EISSN 2504-477X Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
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