ESTG - Mestrado em Engenharia da Conceção e Desenvolvimento de Produto
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Browsing ESTG - Mestrado em Engenharia da Conceção e Desenvolvimento de Produto by Subject "3D printing"
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- 3D Printed Preforms for Manufacturing Flexible Cork CompositesPublication . Palmer, Jordan Richard Gordon; Simões, Fábio Jorge PereiraAs concerns around climate and carbon footprint are better understood, countries around the world are increasingly pricing carbon. Initiatives such as the Paris Accord are a good example. As pricing carbon becomes more important, within the context of the manufacturing industry, sustainable materials are going to be well positioned to out-perform traditional non-renewables. Recycled cork has the potential to serve as a substitute to current petroleum-based foams; and a more sustainable, lower carbon footprint alternative, at the same or similar cost. This thesis will discuss the need for a new approach to the mass production of cork polymer composite materials, and the potential for additive manufacturing techniques to satisfy this need and improve their performance, while also reducing their environmental impact. The proposed solution is a process for 3D printing cork preforms for compression molded TPE based cork polymer composites. This method will provide precise software-based density control, making it possible to fabricate highly flexible, lightweight composite parts without sacrificing durability.
- 3D Printing on a Large Scale for ConstructionPublication . Gomes, Ludmila Vago; Gaspar, Florindo José Mendes; Simões, Fábio Jorge Pereira
- Additive manufacturing of foamed structuresPublication . Mistry, Abhishek; Mateus, Artur Jorge dos Santos; Simões, Fábio Jorge PereiraThe 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.