We present advances in a water-based fabrication and design approach for the 3D-printing of functionally graded bio-composites. These developments demonstrate further refinement and large-scale deployment of Water-Based Digital Fabrication in the construction of architectural-scale
membrane structures. Fully biodegradable and composed of the most abundant materials of our planet —cellulose, chitosan, and water—these bio-composites represent a versatile system for the construction of dynamic membrane structures with graded mechanical and optical properties
across scales. The described digital fabrication system, based on the Fabrication-Information Modeling (FIM) approach, enables the simultaneous printing and mixing of water-soluble materials through real-time feedback-driven control logics. In this way, we explore programming material behaviors
through the design of diffusion-based material gradients in biocomposite hydrogels and examine the impact of local and global material cues on the full-scale assembled structure. Novel generative design methods integrate material-specific fabrication parameters and enable data-driven, hierarchical
organization of the manufacturing workflow. The parametric control of the chemical composition in the 3D printing process allows for the customization of structural, environmental performative parameters of the structures across scales. In combination, these methods comprise a scalable fabrication
system for the creation of adaptable, biodegradable membrane structures with minimal need for environmental control.
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functionally graded materials;
Document Type: Research Article
Authors with equal contributions
Mediated Matter Group, MIT Media Lab, Department of Architecture and Urban Planning, Massachusetts Institute of Technology 75 Amherst St., Cambridge MA, 02139, USA *, Email: [email protected]
October 7, 2019
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