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Design for Additive Manufacturing

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Additive Manufacturing Technologies

Abstract

Design for manufacture and assembly (DFM) has typically meant that designers should tailor their designs to eliminate manufacturing difficulties and minimize manufacturing, assembly, and logistics costs. However, the capabilities of additive manufacturing technologies provide an opportunity to rethink DFM to take advantage of the unique capabilities of these technologies. As mentioned in Chap. 16, several companies are now using AM technologies for production manufacturing. For example, Siemens, Phonak, Widex, and the other hearing aid manufacturers use selective laser sintering and stereolithography machines to produce hearing aid shells; Align Technology uses stereolithography to fabricate molds for producing clear dental braces (“aligners”); and Boeing and its suppliers use polymer powder bed fusion (PBF) to produce ducts and similar parts for F-17 fighter jets. For hearing aids and dental aligners, AM machines enable manufacturing of tens to hundreds of thousands of parts, where each part is uniquely customized based upon person-specific geometric data. In the case of aircraft components, AM technology enables low-volume manufacturing, easy integration of design changes and, at least as importantly, piece part reductions to greatly simplify product assembly.

The unique capabilities of AM include: shape complexity, in that it is possible to build virtually any shape; hierarchical complexity, in that hierarchical multiscale structures can be designed and fabricated from the microstructure through geometric mesostructure (sizes in the millimeter range) to the part-scale macrostructure; material complexity, in that material can be processed one point, or one layer, at a time; and functional complexity, in that fully functional assemblies and mechanisms can be fabricated directly using AM processes. These unique capabilities enable new opportunities for customization, very significant improvements in product performance, multifunctionality, and lower overall manufacturing costs. These capabilities will be expanded upon in Sects. 17.3 and 17.4.

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Notes

  1. 1.

    Design for manufacturing is typically abbreviated DFM, whereas design for manufacture and assembly is typically abbreviated as DFMA. To avoid confusion with the abbreviation for design for additive manufacturing (DFAM), we have utilized the shorter abbreviation DFM to encompass both design for manufacture and design for assembly.

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Authors and Affiliations

  1. School of Engineering, Deakin University, Victoria, Australia

    Ian Gibson

  2. George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA

    David Rosen

  3. Department of Industrial Engineering, J B Speed, University of Louisville, Louisville, KY, USA

    Brent Stucker

Authors
  1. Ian Gibson
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  2. David Rosen
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  3. Brent Stucker
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Gibson, I., Rosen, D., Stucker, B. (2015). Design for Additive Manufacturing. In: Additive Manufacturing Technologies. Springer, New York, NY. https://doi.org/10.1007/978-1-4939-2113-3_17

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  • DOI: https://doi.org/10.1007/978-1-4939-2113-3_17

  • Publisher Name: Springer, New York, NY

  • Print ISBN: 978-1-4939-2112-6

  • Online ISBN: 978-1-4939-2113-3

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