June 11th - June 14th, 2023
Telč, Czech Republic
| Isabel Duarte |
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| Department of Mechanical Engineering, University of Aveiro |
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Dr. Ing. Isabel Duarte, Chemical Engineering, Degree in University of Coimbra (1992), Materials Engineering Master’s Degree in University of Lisbon (IST/UL, 1998) and PhD in Engineering Sciences at University of Porto (FEUP, 2005). She joined the Fraunhofer Institute in Bremen in 1998, obtained her PhD in 2005 with the doctoral thesis” Metal foams: production, characterization and numerical simulation”. She is a researcher at Department of Mechanical Engineering of University of Aveiro (DEM/UAVR). She is teaching the discipline “Composite and Cellular Structures” in MSc Program in Mechanical Engineering. Her current research focus of research lies on design, fabrication and characterization of advanced cellular structures and on X-ray microcomputed tomography. Her research resulted in the development of prototypes, including sandwich panels, 3D shaped structures, filled profiles and hybrid structures. She has a strong multi-international cooperation in these thematic fields, resulted several original scientific journal articles. She has published more than 50 articles in SCI journals, 2 patents and 6 editorships for books and journal issues.
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MULTIFUNCTIONAL STRUCTURES BASED ON CELLULAR METALS FOR ENGINEERING APPLICATIONS |
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Cellular metals have become the most suitable lightweight multifunctional materials, contributing to significant advances in all industrial sectors, especially for building more efficient, ecological, sustainable, comfortable, and safe buildings, cars, trains, furniture, industrial machines, and medical equipment. They are light, strong, multi-functional, recyclable and non-flammable, ideal for sustainable and environmentally friendly design. The presentation provides an overview of research activities related to the field of cellular metals. This research focuses on the design, processing, and morphological and mechanical characterizing of structures filled with various cellular metals [1-2]: open-cell aluminium foam, closed-cell aluminium foam, advanced pore morphology (APM) foam, metallic hollow sphere structure (MHSS). The fabrication technologies for these filled structures [3] are presented. The morphology characterization of these structures is assessed by using X-ray microcomputed tomography to provide their internal cellular structures. These structures are subjected to mechanical loading in an extensive experimental testing program in which different types of loading (e.g., compression and bending) and velocity (e.g., quasi-static, dynamic) are considered. The deformation response, including the collapse mechanism of the filled structures, has been analyzed in detail. The mechanical properties, energy absorption capacity, and strain rate sensitivity are also evaluated. Results have shown that some of these filled structures offer a stable crush performance and their mechanical properties and deformation mechanism can be adjusted for specific applications.
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| [1] Duarte, I. et al. Axial crush performance of polymer-aluminium alloy hybrid foam filled tubes. Thin-Walled Structures, 138, 124-136 (2019). |
| [2] Vesenjak, M. et al.Bending performance evaluation of aluminium alloy tubes filled with different cellular metal cores. Composite Structures, 234, 111748 (2020). |
| [3] Duarte, I. et al. Automated Continuous Production Line of Parts Made of Metallic Foams. Metals, 9(5), 531 (2019). |
