Jaime Orellana Barrasa- Doctor of Engineering
- Lecturer at Universidad Politécnica de Madrid
Jaime Orellana Barrasa
- Doctor of Engineering
- Lecturer at Universidad Politécnica de Madrid
Additive Manufacturing (FDM)
// Mechanical & thermal characterization
// EcoDesign - LCA
// Materials selection
About
14
Publications
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Introduction
Current institution
Additional affiliations
February 2024 - present
Education
September 2013 - July 2017
Publications
Publications (14)
Bone cement, frequently based on poly (methyl methacrylate), is commonly used in different arthroplasty surgical procedures and its use is essential for prosthesis fixation. However, its manufacturing process reaches high temperatures (up to 120 °C), producing necrosis in the patients’ surrounding tissues. To help avoid this problem, the addition o...
The properties of polylactic acid (PLA) filaments have not yet been analysed in detail, and they are strongly affected by the extrusion process used in some additive manufacturing systems. Here we present the mechanical, thermal, physical, and fractographical properties of an extruded filament (not the bulk material or scaffolds), the basic buildin...
The physical ageing of polylactic acid (PLA) is a phenomenon that changes the material’s properties over time. This ageing process is highly dependent on ambient variables, such as temperature and humidity. For PLA, the ageing is noticeable even at room temperatures, a process commonly referred to as natural ageing. Stopping the ageing by freezing...
The effect of Mg particles on the thermal, chemical, physical, and primarily mechanical properties of 3D-printed PLA/Mg composites is studied in this paper. Recently, new colloidal processing has been proposed to introduce Mg particles into the PLA matrix, which ensures good dispersion of the particles and better thermal properties, allowing for th...
Revisión de residuos industriales utilizados para la captura de CO2 y su utilización en construcción que han sido objeto de estudio dentro del proyecto CSTO2NE. Hacemos un repaso al trabajo realizado y en curso, con énfasis en la carbonatación acelerada con CO2 gaseoso y CO2 supercrítico de cementos base EAF slag (Electric Arc Furnace Slag).
The effects of post-treatment temperature-based methods for accelerating the ageing of PLA were studied on 1D single-PLA filaments after fused filament fabrication (FFF). The goal was to answer the questions whether the PLA can be safely aged—i.e., without degrading—at higher temperatures; at which temperatures, if any; how long it takes for the PL...
The effects of post-treatment temperature-based methods on 1D single PLA filaments after FFF have been studied. This lets to decouple the variables related to the 3D structure (layer height, raster angle, infill density, and others) from the variables solely related to the material (molecular weight, molecular orientation, crystallinity, and others...
The effect of Mg particles on PLA's thermal, chemical, physical, and mechanical properties has been studied. The thermal and physical properties have been studied by differential scanning calorimetry, analysing the stability of the α and α’-crystals of the PLA. A colloidal route was used to introduce Mg particles inside the PLA matrix, ensuring a g...
Bone cement, mainly based in PMMA, is commonly used in different arthroplasty surgical proce-dures, and its use is essential for prosthesis fixation. However, its manufacturing process reaches high temperatures that can produce necrosis in the patients' surrounding tissues. In order to con-tribute to avoid this problem, the addition of graphene cou...
Modern theories on NeuroLearning state that when emotions are linked to the learning process, it is much more difficult to forget what has been learned (Pherez, Vargas, & Jerez, 2018; Ninaus, et al., 2019) In this regard, gamification can be particularly effective in fixing the information by directly applying the knowledge acquired playfully (Part...
Instagram is nowadays a popular social network, with over 1 million users worldwide on mobile devices (Clement, 2019), so it has become an essential application among young people. This makes Instagram an excellent channel to reach students, a mainly young audience.
It has been investigated the potential application of a bio-inspired 3D model for decreasing the time required to perform the geometrical optimization of a hip prosthesis stem. This research assumes that nature has already found the best solution for many situations, proved to be real for many cases, what has been demonstrated for the specific situ...
