MOVLAB - Artigos de Revistas Internacionais com Arbitragem Científica
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Item Computational Programming as a Tool in the Teaching of Electromagnetism in Engineering Courses: Improving the Notion of Field(MDPI, 2019) Marques, Pedro Carmona; Nogueira, João; Alves, Ricardo GaioIn this study we have attempted, firstly, to describe programming protocols developed for the teaching of an Electromagnetism course in the university degrees of Electrical Engineering and Energy Engineering, and secondly, to evaluate students’ satisfaction with the simulation practices through MATLAB®programming. The main objective of the protocols is to allow students to model and visualize the electric field and magnetic field (both static) and understand the approximation that is made when considering certain distributions of electric charges and electric currents. To evaluate the usefulness of this computational methodology, eighteen students from the two engineering degrees answered a questionnaire with seven questions related to the Electromagnetism course and to the benefits of using computer programming. Their answers are measured by a Likert scale. From the analysis of the results, we can conclude, in a general way, that the use of this methodology has positive effects in the learning of Electromagnetism in these two degrees.Item Dissimilar Metals LaserWelding between DP1000 Steel and Aluminum Alloy 1050(MDPI, 2019) Marques, Pedro Carmona; Pereira, António; Cabrinha, Ana; Rocha, Fábio; Fernandes, Fábio A. O.; Sousa, RicardoThe welding of dissimilar metals was carried out using a pulsed Nd: YAG laser to join DP1000 steel and an aluminum alloy 1050 H111. Two sheets of each metal, with 30 14 1 mm3, were lap welded, since butt welding proved to be nearly impossible due to the huge thermal conductivity differences and melting temperature differences of these materials. The aim of this research was to find the optimal laser welding parameters based on the mechanical and microstructure investigations. Thus, the welded samples were then subjected to tensile testing to evaluate the quality of the joining operation. The best set of welding parameters was replicated, and the welding joint obtained using these proper parameters was carefully analyzed using optical and scanning electron microscopes. Despite the predicted difficulties of welding two distinct metals, good quality welded joints were achieved. Additionally, some samples performed satisfactorily well in the mechanical tests, reaching tensile strengths close to the original 1050 aluminum alloy.Item Integrating Innovation and Technology: A Case Study(The Society of Systematic Innovation, 2019) Marques, Pedro Carmona; Silva, Arlindo; Henriques, ElsaThis paper explores a successful case of a product-service system (PSS). To meet the requirements of the client's needs and the existence of many technologies, business models and innovations involved in its conception and development, a conceptual framework of the ideation process is purposed to explain how the company met the requirements of such technical complexity, adding value to customers, stakeholders, and the company itself. Cases found in the development and implementation phase of the PSS displays the correspondence between the proposed framework and the case study. Furthermore, a relationship between creativity and systems' architecture is explored.Item A Survey on Sustainable Product Development(Elsevier B.V., 2019) Marques, Pedro Carmona; Charmier, Maria Adília Januário; Santos, José OliveiraThe emergent field of sustainable product development has been rapidly evolving in several academic publications. Furthermore, sustainable product development is the basis for innovative products (and services). The analysis begins by identifying published studies within the last five years. A systematic mapping of the field evolution overtime is performed by identifying areas of current research interests and potential directions for future research. The findings will provide a roadmap for further investigations in this field.