ESTCB - Escola Superior de Tecnologia
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Browsing ESTCB - Escola Superior de Tecnologia by Subject "3D Printing"
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- 3D printing online learning environements: multiple approaches towards self-learning of engineering design studentsPublication . Pikkarainen, Ari; Gaspar, MarceloThis paper presents an exploratory study conducted at two Higher Education Engineering Schools, namely in the Lapland University of Applied Sciences (Finland) and in the Polytechnic Institute of Castelo Branco (Portugal), with the aim of constructing digital learning environments that promote increasing learning autonomy to students working with 3D printing technologies in engineering design. Based on pilot blended learning experiences carried-out in both schools, new instructional design solutions are proposed and discussed, aiming at a widespread use of such digital platforms not only for blended and online learning processes in engineering schools, but also as Massive Open Online Courses open to wider communities interested in such technologies.
- The anisotropy and friction effect in the design of 3D printed PLA parts – A case studyPublication . Ramalho, Armando; Freitas, Dino; Almeida, HenriqueAdditive Manufacturing, commonly known as 3D Printing, is one of the most affordable manufacturing processes for producing complex geometric components. This manufacturing process is also frequently used when it is needed to manufacture unique parts to replace degraded or damaged components and spare parts that are no longer available. In this reverse engineering process, particular attention must be given to the constitutive models of materials. The 3D printing manufacturing process usually requires a change of materials and introduces or increases the anisotropy. In addition, the complexity of part geometries and loading often requires using the finite element method to simulate their behaviour in service. Polylactic acid (PLA) is one of the materials frequently used in 3D Printing for its sustainability, affordability, and mechanical and thermal properties. In this study, a bushing of a hinged drawer support is reverseengineered, and its in-service behaviour is simulated before it is manufactured using Tough PLA material through 3D printing. Furthermore, the effect of the anisotropy and the friction in the design is evaluated. The MSC Patran/Nastran 2021 software for the finite element analysis, the Ultimaker Cura 5.0 software and the Ultimaker S5 printer were used.