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PAPERS: Multimaterial Design Methods for AM

Design for Fiber-Reinforced Additive Manufacturing

[+] Author and Article Information
Hauke Prüß

Institute for Engineering Design,
Technische Universität Braunschweig,
Langer Kamp 8,
Braunschweig 38106, Germany
e-mail: hauke.pruess@tu-bs.de

Thomas Vietor

Institute for Engineering Design,
Technische Universität Braunschweig,
Langer Kamp 8,
Braunschweig 38106, Germany
e-mail: t.vietor@tu-bs.de

Contributed by the Design for Manufacturing Committee of ASME for publication in the JOURNAL OF MECHANICAL DESIGN. Manuscript received February 14, 2015; final manuscript received June 17, 2015; published online October 12, 2015. Assoc. Editor: Timothy W. Simpson.

J. Mech. Des 137(11), 111409 (Oct 12, 2015) (7 pages) Paper No: MD-15-1106; doi: 10.1115/1.4030993 History: Received February 14, 2015; Revised June 17, 2015

The continuously decreasing life cycle of modern products leads to new challenges for product development. Additive manufacturing (AM) processes are able to support faster development by rapid production of samples and prototypes. However, the material properties of components produced by common (plastic-) 3D-printers are often insufficient for functional prototyping. A well-established way to improve the properties of plastics is the embedding of reinforcing fibers. Thus, this paper shows a method for fiber-reinforced 3D-printing. Through this combination, several restrictions of conventional composite production can be eased and additional freedoms of design are gained. To support the design of such parts, an adapted design methodology for fiber-reinforced 3D-printing is developed.

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References

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Figures

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Fig. 1

Design of an adapted FFF print head

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Fig. 2

Prototype of an adapted FFF print head

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Fig. 3

Staircase effect: (a) conventional slicing and (b) three-dimensional strands

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Fig. 4

Warp: (a) pure plastic without temperature management and (b) FRP

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Fig. 5

Bridging gaps: (a) plastic and (b) FRP

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Fig. 6

Cellular structures with less support material (S)

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Fig. 7

Directional strength: (a) conventional slicing and (b) three-dimensional strands

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Fig. 8

Infill: (a) standard pattern and (b) load-based pattern

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Fig. 9

Selective reinforcement

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