Chapter 7

3D Printing Challenges and New Concepts for Production of Complex Objects

Hayden Taylor

Hayden Taylor

Department of Mechanical Engineering, University of California, Berkeley, CA, USA

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Hossein Heidari

Hossein Heidari

Department of Mechanical Engineering, University of California, Berkeley, CA, USA

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Chi Chung Li

Chi Chung Li

Department of Mechanical Engineering, University of California, Berkeley, CA, USA

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Joseph Toombs

Joseph Toombs

Department of Mechanical Engineering, University of California, Berkeley, CA, USA

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Sui Man Luk

Sui Man Luk

Department of Mechanical Engineering, University of California, Berkeley, CA, USA

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First published: 08 February 2021
Citations: 1

Summary

This chapter highlights some highly promising but less conventional material transformation principles that are beginning to be applied to additive fabrication, and that have received especially strong attention in the research literature over the last 1–2 years. Most usually, complexity is taken to mean that an object contains a large number and variety of geometrical features—varying in shape, scale, or both. Additive processes offer enormous scope to combine multiple materials and also to vary the properties of a given material spatially. The concept of 4D printing also encompasses materials that will initiate certain temporal behavior in use, such as cell-adhesive, remodel able tissue scaffolds that promote blood vessel growth. Computed axial lithography employs the same core tomographic principles that are widely used in X-ray CT for 3D imaging. Developments in printing with continuous fibers could greatly benefit 3D printing for building construction.

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