LIDA - Artigos em revistas internacionais
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- CARTAS DE AMORPublication . Baraona, IsabelTexto sobre postais e edições afins como projetos artísticos. Cartas de amor é o título de um projeto artístico iniciado há dez anos, mas ainda em desenvolvimento, que implica a produção e o envio de postais a um grande número de pessoas.
- Arte e Visualidades Sobre Corpo e Lugar: Saber Tradicional Ameríndio e Experiências Transmetodológicas Entre Brasil e PortugalPublication . Dilva, Marcelo Rodrigo da; Wielewicki, Fabiana Feronha; Luzio, TeresaEste artigo relata a experiência didática, pedagógica e interdisciplinar no estudo das visualidades sobre corpo e lugar, envolvendo os componentes curriculares de Fotografia, Cinema e Performance dos cursos de Jornalismo e Artes Visuais de instituições de ensino superior no Amazonas, Brasil, e nas Caldas da Rainha, em Portugal. Sob uma perspectiva transmetodológica (MALDONADO, 2012), reflete-se sobre os sentidos e linguagens experimentais desenvolvidos pelos estudantes e professores, de forma híbrida (presencial e remotamente), durante o primeiro semestre de 2022 e que têm como referência estudos ancorados no saber tradicional ameríndio (KOPENAWA e ALBERT, 2015; CASTRO, 2017) e nos sentidos cosmológicos relacionados às visualidades, mais especificamente à luminescência.
- Recent Developments in Non-Conventional Welding of MaterialsPublication . Leal, Rui M.; Galvão, IvanWelding is one of the technological fields with the greatest impact in many industries, such as automotive, aerospace, energy production, electronics, the health sector, etc. Welding technologies are currently used to join the most diverse materials, from metallic alloys to polymers, composites, or even biological tissues. Despite the relevance and wide application of traditional welding technologies, these processes do not meet the demanding requirements of some industries. This has driven strong research efforts in nonconventional welding processes, such as laser welding, ultrasonic welding, impact welding, friction stir welding (FSW), diffusion welding, and many other welding technologies. Important studies have been recently developed all over the world on the application of these processes to the joining of cutting-edge materials and material combinations, enabling the production of joints with improved properties. Thus, this Special Issue presents a sample of the most recent developments in the non-conventional welding of materials, which will drive the design of future industrial solutions with increased efficiency and sustainability
- Copper/Stainless Steel Friction Stir Spot Welds—Feasibility and Microstructural AnalysisPublication . Taborda, Diogo; Leal, Rui M.; Morgado, Teresa; Leitão, 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.
- Joining of Polyethylene Using a Non-Conventional Friction Stir Welding ToolPublication . Pereira, Miguel A. R.; Galvão, Ivan; Costa, José Domingos; Leal, Rui M.; Amaro, Ana M.The objective of the current study was to butt-weld 6 mm-thick polyethylene (PE) plates by friction stir welding (FSW) using a non-conventional stationary shoulder tool. The welds were performed with an unheated shoulder and with a shoulder temperature of 85 C. Additionally, rotational speeds of 870, 1140 and 1500 rpm; welding speeds of 60 and 120 mm/min; and plunge depths of 5.5 and 5.7 mm were used. The influence of these parameters on morphology, hardness, ultimate tensile strength, elongation at break and fracture modes was evaluated. Shoulder heating proved to be crucial for the optimization of PE joints by FSW, as it clearly improved joint efficiency. Furthermore, shoulder heating promoted the reduction in internal and external defects, such as porosity and surface burning. Defect-free weld seams were obtained with higher rotational speeds and a lower welding speed. A maximum joint efficiency of about 97% was achieved with a shoulder temperature of 85 C, a rotational speed of 1500 rpm, a welding speed of 60 mm/min and a plunge depth of 5.7 mm. A weld with the average joint efficiency of 92% was produced at 120 mm/min, which based on the literature found is the highest welding speed reported that achieved a joint efficiency above 90%.
- Joining of Fibre-Reinforced Thermoplastic Polymer Composites by Friction StirWelding—A ReviewPublication . Pereira, Miguel A. R.; Galvão, Ivan; Costa, José Domingos; Amaro, Ana M.; Leal, Rui M.The objective of the current work is to show the potential of the friction stir welding (FSW) and its variants to join fibre-reinforced thermoplastic polymer (FRTP) composites. To accomplish that, the FSW technique and two other important variants, the friction stir spot welding (FSSW) and the refill friction stir spot welding (RFSSW), are presented and explained in a brief but complete way. Since the joining of FRTP composites by FSSW has not yet been demonstrated, the literature review will be focused on the FSW and RFSSW techniques. In each review, the welding conditions and parameters studied by the different authors are presented and discussed, as well as the most important conclusions taken from them. About FSW, it can be concluded that the rotational speed and the welding speed have great influence on heat generation, mixture quality, and fibre fragmentation degree, while the tilt angle only has residual influence on the process. The reduction of internal and external defects can be achieved by adjusting axial force and plunge depth. Threaded or grooved conical pins achieved better results than other geometries. Stationary shoulder tools showed better performance than conventional tools. Regarding the RFSSW, it has not yet been possible to deepen conclusions about most of the welding parameters, but its feasibility is demonstrated.
- A new species of scops-owl (Aves, Strigiformes, Strigidae, Otus) from Príncipe Island (Gulf of Guinea, Africa) and novel insights into the systematic affinities within OtusPublication . Melo, Martim; Freitas, Bárbara; Verbelen, Philippe; da Costa, Sátiro R.; Pereira, Hugo; Fuchs, Jérôme; Sangster, George; Correia, Marco N.; de Lima, Ricardo F.; Crottini, AngelicaA new species of scops-owl (Aves, Strigiformes, Strigidae, Otus) is described from Príncipe Island, São Tomé and Príncipe (Gulf of Guinea, Africa). This species was discovered for science in 2016, although suspicions of its occurrence gained traction from 1998, and testimonies from local people suggesting its existence could be traced back to 1928. Morphometrics, plumage colour and pattern, vocalisations, and molecular evidence all support the species status of the scops-owl from Príncipe, which is described here as Otus bikegila sp. nov. Phylogenetic analyses suggest that this species descended from the first colonisation of the Gulf of Guinea islands, being sister to the clade including the mainland African Scops-Owl O. senegalensis, and the island endemics Sao Tome Scops-Owl O. hartlaubi and Pemba Scops-Owl O. pembaensis. The most diagnostic trait in the field is its unique call which, curiously, is most similar to a distantly related Otus species, the Sokoke Scops-Owl O. ireneae. The new species occurs at low elevations of the old-growth native forest of Príncipe, currently restricted to the south of the island but fully included within Príncipe Obô Natural Park. Otus bikegila sp. nov. takes the number of single-island endemic bird species of Príncipe to eight, further highlighting the unusually high level of bird endemism for an island of only 139 km2.
- Participatory Co-design: Approaches to Enable People Living with Challenging Health Conditions to Participate in Design ResearchPublication . Neves, S.; Macdonald, A.; Poole, M.; Dening, K. HarrisonAbstract People are living longer and are affected by challenging chronic, lifestyleand age-related conditions such as dementia and stroke. The increasing number of people living with challenging health conditions highlights social concerns and their implications for the successful delivery of healthcare services. Research on improving dementia care [Alzheimer’s Disease International (2016) World Alzheimer Report 2016: Improving healthcare for people living with dementia: coverage, quality and costs now and in the future. Alzheimer’s Disease International, London] shows a need to involve people living with dementia, their families, and health and social care professionals when designing improvements to their healthcare services. In addition, involving patients recovering from stroke in discussions about rehabilitation services has been considered important to enable making decisions that better address their health care needs [Kristensen HK, Tistad M, Koch LV, Ytterberg C (2016) The importance of patient involvement in stroke rehabilitation. PLOS One 11(6). 10.1371/journal.pone.0157149]. This paper presents two case studies of a participatory co-design approach used to engage people; (a) living with dementia, and (b) recovering from stroke in design research, where co-design-led methods were used to enable participation. The paper describes the importance of each of the roles of—and relationships between—individuals involved in the participatory co-design research process and how people living with challenging health conditions are enabled to participate in a form of three-way relationship. It discusses lessons learned, reflections and recommendations for a new collaborative model for people living with challenging health conditions engagement to enable a more equal and reciprocal partnership for participation in design research into healthcare improvements.
- Quarry Sonnets: Artistic Methodologies in More-than-Human ReasoningPublication . Santos, MiguelThe article proposes a posthumanist, site-led mode of reasoning in which geological, ecological, climatic, and human forces participate in shaping artistic practice. It draws on Quarry Sonnets, a nine-day, practice-led field project at the Vale de Meios limestone quarry in Portugal’s Serras de Aire e Candeeiros Natural Park in late November 2022, involving forty-five participants from six European art schools. Treating art practice as a way of knowing, the project convened open, revisable ways of working—walking, listening, iterative making, and collective reflection—so that the quarry’s tempos, weather, fossils, and working traces could co-author inquiry. Methodologies were held lightly and adjusted in practice, with decisions led by what the site made possible on a given day rather than preset outcomes. Two orienting commitments—attunement and composting knowledge—held diverse practices and partial understandings in contact without forcing consensus. The article’s contribution is to foreground artistic practice as a way of organizing environmental research by expanding who participates and what counts as evidence, while refusing closure into templates, solutions, or toolkits. In this register, research proceeds with the quarry and its more-than-human relations as a co-author that sets pace and constraint, keeping political and ecological questions active without resolving them in advance.
- A INDUSTRIA CERÂMICA DA LOUÇA UTILITÁRIA E DECORATIVA NA PERSPECTIVA DAS ESTRATÉGIAS DO LANÇAMENTO DE NOVOS PRODUTOS DE ECO-DESIGNPublication . Frade, José Manuel Couceiro Barosa Correia; Ferroli, Paulo Cesar MachadoEste artigo pretende evidenciar estratégias de eco-design e de sustentabilidade que são aplicadas no processo de design de novos produtos em empresas dos subsetores industriais da cerâmica utilitária e decorativa em portugal. A divulgação deste trabalho pretende servir como fonte de inspiração ao design de futuros produtos que se diferenciem por serem ambientalmente adequados, economicamente viáveis e socialmente responsáveis, fatores que são cada vez mais importantes nos critérios de decisão dos consumidores nomeadamente dos mercados internacionais mais exigentes e evoluídos onde as empresas portuguesas comercializam os seus produtos.
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