Additive manufacturing of foamed structures

Mistry, Abhishek

http://hdl.handle.net/10400.8/8160

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Authors

Mistry, Abhishek

Advisor(s)

Mateus, Artur Jorge dos Santos

Simões, Fábio Jorge Pereira

Abstract(s)

The major aim of this work was to develop an additive manufacturing method for obtaining foamed structures. There is limited research to understand the properties of the materials and the technology used to make foamed parts directly by additive methods. Initially a process was developed that involved using a syringe and DLP (Digital Light Processing) to create bubbles inside the photo-polymer resin. However, the results were unappealing, so upon further literature review, inspiration was found in a research paper in which the authors used an SLA (stereolithography) printer to create foamed parts by means of a polymer resin blended with a foaming agent that caused the part to expand after printing. Additionally, this research includes a thorough investigation of the mechanical characteristics of foams with various infill structures.