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Universitat Politècnica de Catalunya
Browsing Programa de Doctorat en Ciència i Enginyeria dels Materials by Title
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3D printing of aluminum alloys under different extrusion techniques
(English) This doctoral research evaluated the feasibility of using various aluminum-based feedstocks in additive manufacturing (AM) to develop cost-effective and environmentally friendly alternatives to traditional metal ...
3D printing of zirconia-based ceramic materials
(English) Zirconia stands out among oxide ceramics for its superior mechanical properties. This approach resulted from the significant research that has been conducted since the discovery of the tbughening capabilities of ...
3D-printed biomimetic bone grafts: clinical validation and improvement strategies
(English) Bone defects pose a major clinical and socio-economic burden and there is a clear need for new bone grafting strategies that take into account the physical-chemical properties of the native bone, to help treat ...
3D-printed polymeric bioresorbable stents for cardiovascular applications
(English) Bioresorbable stents (BRS) have been envisioned as a revolution in the treatment of coronary heart disease. Ideally, stents would initially retain sufficient radial strength after implantation to prevent vessel ...
A computational study of intervertebral disc degeneration in relation to changes in regional tissue composition and disc nutrition
Up to 85% of the world population suffers from low back pain, a clinical condition often related to the intervertebral disc (IVD) degeneration (DD). Altered disc cell nutrition affects cell viability and can generate ...
A damage-based fatigue life prediction method for metallic alloys and composites
(English) Fatigue failures in materials have been studied for centuries, with early pioneers like August Wöhler noting that repeated loading, even below the static strength of the material, could lead to structural ...
A study of the rheological properties and injectability of calcium phosphate cements : application to minimally invasive surgical procedures and scaffold fabrication for tissue engineering through rapid prototyping
The present work addresses two different applications enabled by a specific and useful property of calcium phosphate cements (CPCs): injectability. On the one hand minimally invasive procedures involving the use of CPCs ...
Additive manufacturing of WC-CO cemented carbides: microstructural, lenght-scale and layer assemblage orientation effects on hardness, sliding contact response and fracture behaviour
(English) This PhD thesis explores the microstructure–mechanical property relationships of WC-Co cemented carbides (hardmetals) produced using two sinter-based additive manufacturing (AM) techniques: Binder Jetting Technology ...
Aerogels based on biodegradable polymers and clay
Foam-like aerogels based on biodegradable polymers and sodium montmorillonite (Na+-MMT) clay were prepared through an environmentally friendly freeze-drying process. Both synthesized and bio-based polymers were utilized ...
Afino microestructural de chapa de acero calidad DDQ mediante procesos de doblado - enderezado
(English) In this thesis, the ability to refine the grain size of a low carbon steel (deep drawing quality, DDQ) was studied by means of two different techniques of Severe Plastic Deformation (SPD). Firstly, the Repetitive ...
Aplicación de criterios de conformabilidad en productos planos de aceros de alta resistencia
La conformabilidad de chapas metálicas suele evaluarse mediante los diagramas FLD (Forming Limit Diagrams), que informan sobre el límite de conformado de un material representado por la curva FLC (Forming Limit Curve). ...
Assessment of corrosion-induced damage in the mechanical contact response of cemented carbides at different length scales
Cemented carbides, also referred to as hardmetals, are composite materials consisting of brittle refractory carbide phase (generally WC) embedded in a metallic matrix. Such microstructure leads to an outstanding combination ...
Bioactive ion-releasing platforms for regenerative medicine applications
(English) One of the most exploited tissue-engineering-based strategies nowadays is to use scaffolds that allow local stimulation of the targeted tissues, increasing therapy effectiveness while reducing toxicity. Therefore, ...
Biofuncionalización de superficies de titanio con colágeno tipo I para mejorar el sellado biológico de implantes dentales
To obtain a regeneration and integration of gingival tissues onto the dental implant surface, is essential to achieve an appropriate cellular response. To promote an appropriate cellular response, materials surface has ...
Biomimetic bone grafts: from the lab to the clinic
Bone grafting is a common medical practice in today’s society, being bone the second most transplanted tissue worldwide after blood. Therefore, it represents a field of major interest for both, biomedical research and the ...
Bioresorbable Zn-based alloys for biomedical applications
(English) Biodegradable metals emerged as promising materials for bioresorbable devices avoiding the potential side effects of permanent implants. Among them, zinc (Zn) arose dueto its suitable degradation rate for biomedical ...
Blends of modified PLA and biopolyamides for additive manufacturing
(English) The main objective of this work is to counteract the limitations of polylactic acid (PLA) and propose a sustainable manufacturing approach using bioblends of a rheologically modified PLA by reactive extrusion ...
Calcium phosphate cements and foams: characterization of porosity and use as local drug delivery devices
The topic of this Philosophy Doctor Thesis tallies with the national project MAT2012 of the BBT group of UPC: "Pore4Bone: Biomimetic calcium phosphates: tailoring porosity from the nano- to the macroscale for osteoinduction, ...
Caracterización de la unión vidrio-metal en la tecnología Glass to Metal Seal y el estudio de nuevos materiales y procesos de fabricación
This doctoral thesis has been carried out at the company VAC-TRON S.A., together with the Department of Materials Science and Engineering of Universitat Politècnica de Catalunya, in the Besós (EEBE) and Vilanova i la Geltrú ...
Caracterización termomecánica de dos aceros de construcción. Influencia de la microaleación conjunta de Nb y V
En este trabajo se estudia la influencia de la microadición conjunta de Nb y V sobre los fenómenos de ablandamiento dinámico y estático durante y trás la deformacion en caliente. En la primera etapa del estudio se realizaron ...
