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Ribeiro Cardoso Martins Morgado, Teresa Leonor
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- 5th International Conference on Quality Innovation and Sustainability (ICQIS 2024): theory and applications (abstract book)Publication . Morgado, Teresa; Galvão, Ivan; Abreu, António; Calado, João Manuel Ferreira; Sá, JoséThe conference themes, which address novel and advanced topics on Sustainability, Quality, and Innovation, focused on eight Special Sessions, namely, "Circular Economy and Waste Management – New Approaches, Innovative Technologies, and Business Models", "Failure Prevents: Reliability, Proactivity and Practice, "Lean, TRIZ methodologies Applied to Sustainability Management", "Modelling and Simulation: A way to promote system resilience and sustainability management", "Quality 4.0 and innovations in the digital era", "Recent Advances in Manufacturing", "Sustainability energy" and "Lean Sustainability". The conference also included the workshop "Brick by Brick: Exploring the Future of Quality Management through Serious Gaming" and an Open Forum on "Quality, Innovation and Sustainability Challenges and Opportunities" where an expert panel of many years of collective and active researchers and managers addressed the issue of balancing the activities of businesses, management, and engineering within the enterprises and institutions. The ICQIS2024 organizers believe that the meeting offered our delegates a forum for discussion and dissemination of their recent work in assessing the Sustainability, Quality, and Innovation of engineering and business services and promoting the exchange of ideas and international cooperation among scientists, managers, and engineers in this vital field of engineering and business.
- Copper/stainless steel friction stir spot welds: feasibility and microstructural analysisPublication . Taborda, Diogo; Leal, Rui; Morgado, Teresa; Leitao, Carlos; Galvão, IvanThe possibility of using solid-state joining technologies, such as friction stir welding (FSW) and its variants, to perform dissimilar joints is one of the well know advantages of this class of processes, namely because they are impossible to be produced by other conventional welding processes due to the evident differences in physical and chemical properties of both materials. Relevant advances have been made over the last 20 years in this field. The material pairs that are mostly addressed in the literature are based on systems involving aluminum alloys and other metallic and non-metallic materials. Indeed, with the upgraded interest in this technology concerning specific engineering applications, some specific material combinations such as aluminum-to-copper (Al-Cu) and aluminumto-ferrous alloys (Al-Fe) have become relevant. However, the research about some material pairs is still scarce or inexistent.
- Study of additive manufacturing intrinsic defects on fatigue life of Ti-6Al-4V †Publication . Ribeiro Cardoso Martins Morgado, Teresa Leonor; Alves, João; Pereira, António; Pereira, Manuel; Martins, Rui F.The present work presents a new approach to studying the structural integrity of a Ti-6Al-4V alloy obtained by Selective Laser Melting (SLM). This approach is based on the intrinsic addictive manufacturing defects analysis obtained by nanotomography, the experimental S-N curve, and the small crack growth Murakami and Endo model. Also, two counting methods of 3D manufacturing intrinsic defects were considered. The simulation of S-N curves and the small crack propagation curves were successfully obtained. New models for predicted fatigue limit were developed, one using the (3D) variable area of the defects observed as the total area and the other using the total project area. The 3D total surface area counting method presents more conservative values on crack propagation studies, so it is recommended for integrity studies of Ti6Al4V alloy obtained by SLM.