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Mendez-Morales, Mariela (author), Branco, Ricardo (author), Tankova, T. (author), Rebelo, Carlos (author)Wire Arc Additive Manufacturing (WAAM) has gained popularity due to its speed and cost-effectiveness. However, the current knowledge on the cyclic deformation behaviour of WAAM materials is limited. To address this issue, this study investigates the cyclic deformation behaviour of WAAM ER70S-6 carbon steel. Coupons were extracted from printed...journal article 2024
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Jovasevic, Slobodanka (author), Correia, José (author), Pavlovic, M. (author), Dantas, Rita (author), Rebelo, Carlos (author), Veljkovic, M. (author), de Jesus, Abilio M.P. (author)Purpose: In the last decades, the demand and use of renewable energies have been increasing. The increase in renewable energies, particularly wind energy, leads to the development and innovation of powerful wind energy converters as well as increased production requirements. Hence, a higher supporting structure is required to achieve higher wind...journal article 2019
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Tran, Anh Tuan (author), Bernspång, Lars (author), Veljkovic, M. (author), Rebelo, Carlos (author), Da Silva, Luís Simõ ões (author)This paper describes a study of the behaviour of cold-formed high strength steel angles. Thirty-six specimens with different cold-formed angles (90°, 100°, 120°, 140°, 160°, and 170°) and different thicknesses (4 mm and 6 mm) were considered. The initial geometric imperfections of the specimens were determined using the 3D laser scanning...journal article 2019
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Tran, Anh Tuan (author), Bernspång, Lars (author), Veljkovic, M. (author), Rebelo, Carlos (author), da Silva, Luís Simões (author)This paper describes a study of the S650 high strength steel material properties including the effect of cold-formed angle. Coupon specimens with different cold-formed angles (90°, 100°, 120°, 140°, 160°and 180°) and different thicknesses (4 mm and 6 mm) were examined. Relationships between cold-formed angle and yield stress as well as...journal article 2019
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Heistermann, Christine (author), Pavlovic, M. (author), Veljkovic, M. (author), Pak, Daniel (author), Feldmann, Markus (author), Rebelo, Carlos (author), da Silva, Luis Simões (author)Friction connections with long open slotted holes have been proven to be a competitive alternative to the conventional flange connections in steel tubular towers for wind energy converters. As full-scale tests are not available, results of Finite Element Analysis (FEA) of the real-scale tower geometry are used in this paper to investigate the...journal article 2017