Reinforced FDM

Fang, G.; Zhang, Tianyu; Zhong, Sikai; Chen, Xiangjia; Zhong, Zichun; Wang, C.C.

doi:10.1145/3414685.3417834

Reinforced FDM

Multi-axis filament alignment with controlled anisotropic strength

Journal article (2020)

Authors

G. Fang Materials and Manufacturing -

Tianyu Zhang Chinese University of Hong Kong

Sikai Zhong Wayne State University

Xiangjia Chen Chinese University of Hong Kong

Zichun Zhong Wayne State University

C.C. Wang The University of Manchester

Research Group

Materials and Manufacturing () (TU Delft)

DOI: https://doi.org/10.1145/3414685.3417834

Reinforcement 3D printing Anisotropic strength Multi-axis motion

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http://resolver.tudelft.nl/uuid:6a758bf2-b94c-4971-a98e-e43a68686039

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Published Date

2020

Language

English

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Faculty

Industrial Design Engineering

Department

Sustainable Design Engineering

Research Group

Materials and Manufacturing

Abstract

The anisotropy of mechanical strength on a 3D printed model can be controlled in a multi-axis 3D printing system as materials can be accumulated along dynamically varied directions. In this paper, we present a new computational framework to generate specially designed layers and toolpaths of multi-axis 3D printing for strengthening a model by aligning filaments along the directions with large stresses. The major challenge comes from how to effectively decompose a solid into a sequence of strength-aware and collision-free working surfaces. We formulate it as a problem to compute an optimized governing field together with a selected orientation of fabrication setup. Iso-surfaces of the governing field are extracted as working surface layers for filament alignment. Supporting structures in curved layers are constructed by extrapolating the governing field to enable the fabrication of overhangs. Compared with planar-layer based Fused Deposition Modeling (FDM) technology, models fabricated by our method can withstand up to 6.35× loads in experimental tests.

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