- document
-
Feng, W. (author)Steel jacket support structures for offshore wind turbine towers made of circular hollow sections (CHS) are becoming a competitive solution compared to monopiles in deeper waters. The current limitation to improving the durability and cost-effectiveness of the CHS structures is the low fatigue endurance of their welded joints. Fatigue-driven...doctoral thesis 2024
- document
-
Aghaeian, S. (author)H igh-temperature (HT) oxidation plays a significant role in various stages of the steelmaking process, including hot rolling. When exposed to high temperatures and oxygen partial pressure, the steel composition near the surface can be altered as alloying elements deplete. Additionally, the characteristics of the oxide scale, such as thickness...doctoral thesis 2024
- document
-
Krugla, M. (author), Offerman, S.E. (author), Sietsma, J. (author), Hanlon, Dave N. (author)The production reality of sheet steels from casting to the end product is such that in the cases of ultra- and advanced high-strength steels, we have to deal with the segregation of elements on macro- and microlevels. Both can have a significant impact on the microstructure formation and resulting properties. There are several production stages...journal article 2024
- document
-
Oñoro, M. (author), de Castro, V. (author), Leguey, T. (author), Pöpperlová, J. (author), Huizenga, R.M. (author), Auger, M. A. (author)An oxide dispersion strengthened (ODS) steel with nominal composition Fe–14Cr–2W–0.4Ti–0.3Y<sub>2</sub>O<sub>3</sub> (wt%) has been manufactured by mechanical alloying of pre-alloyed powders with nanosized Y<sub>2</sub>O<sub>3</sub>, compacted by hot isostatic pressing and hot cross rolled. In order to evaluate the long-term thermal...journal article 2024
- document
-
Miculaş, Cristian V. (author), Costa, Ricardo J. (author), da Silva, Luis Simões (author), Simões, Rui (author), Craveiro, Helder (author), Tankova, T. (author)This paper presents the development, implementation, and validation of a macro-element suitable for the linear analysis of innovative 3D plug-and-play joints between tubular columns and lightweight steel truss-girders. The macro-element is based on the component method, accounts for the three-dimensional interaction between the tube faces,...journal article 2024
- document
-
Men, Jinkun (author), Chen, Guohua (author), Reniers, G.L.L.M.E. (author)Earthquake-triggered fire domino scenarios (E-FDSs) arise frequently from the interaction between earthquakes and chemical installations, resulting in catastrophic multi-hazard coupling events. The complicated mutually amplified phenomena between natural disasters and chemical accidents significantly aggravates the escalation of domino...journal article 2024
- document
-
He, P. (author), Moreira Arouche, M. (author), Koetsier, M. (author), Pavlovic, M. (author)Debonding is characterized as the governing failure mode in the innovative wrapped composite joints made with glass fiber composite material wrapped around steel hollow sections without welding. The prerequisite for predicting debonding failure of wrapped composite joints is to obtain fracture behavior of the composite-steel bonded interface....journal article 2024
- document
-
Ferreira Filho, José Osvaldo (author), da Silva, Luís Simões (author), Tankova, T. (author), Carvalho, Hermes (author)This paper aims to assess the influence of geometrical imperfections and residual stresses on the reliability of the stability design rules for steel columns in Eurocode 3 considering a full probabilistic approach and further validate the new buckling curves in the scope of the ongoing revision of the Structural Eurocodes. A reliability...journal article 2024
- document
-
Andrade, D. G. (author), Tankova, T. (author), Zhu, C. (author), Branco, R. (author), da Silva, L. Simões (author), Rodrigues, D. M. (author)The use of 3D printed stainless steel requires a deep knowledge of its mechanical properties. This paper presents material characterisation of 316LSi austenitic stainless-steel coupons manufactured by CMT-WAAM, considering different deposition directions. The specimens were tested according to ISO 6892-1, the fractures surfaces were examined...journal article 2024
- document
-
Men, Jinkun (author), Chen, Guohua (author), Reniers, G.L.L.M.E. (author), Wu, Yue (author), Huang, Hailing (author)An earthquake-triggered fire domino scenario (E-FDS) is an example of a typical multi-hazard coupling event. The seismic damage can affect the fire resistance of engineering structures, leading to significant mutually amplified phenomena. In this work, a two-stage experimental program is designed to expound the earthquake-fire coupling...journal article 2024
- document
-
Gomes, J. O. (author), Simões da Silva, L. (author), Tankova, T. (author), Carvalho, H. (author), Filho, J. O. Ferreira (author)The lateral-torsional resistance of prismatic double-symmetric I-section beams is accurately predicted using a mechanically consistent Ayrton-Perry approach, combined with a calibrated generalized imperfection. The corresponding design formulation was recently adopted in the revised version of Eurocode 3. However, for prismatic mono-symmetric...journal article 2024
- document
-
Zheng, L. (author), Hamaza, S. (author)Drones have been increasingly used in various domains, including ecological monitoring in forests. However, the endurance and noise of drones have limited their deployment to short flight missions above canopies. To address these limitations, we introduce ALBERO: a framework comprising a mechanical solution and an optimal planner to realise...journal article 2024
- document
-
Boldrini, Annika (author), Koolen, Derck (author), Crijns-Graus, Wina (author), van den Broek, M.A. (author)The transition of the European iron and steel industry (ISI) towards low-carbon manufacturing is crucial for the European Union (EU)’s 2050 climate neutrality objective. One emerging solution is electrification by using hydrogen (H<sub>2</sub>) as iron ore reductant, which increases specific electricity use per tonne of steel up to 35 times...journal article 2024
- document
-
Gao, Yu (author), Zhang, Jingru (author), Wang, Donglei (author), Fan, Jiaxin (author), Mol, J.M.C. (author), Wang, Fuhui (author), Zhang, Danni (author), Xu, Dake (author)Microbially influenced corrosion (MIC) of metals exerts a negative effect on the marine environment and causes a great loss of marine facilities. Corrosion prevention in an eco-friendly and sustainable way is a difficult problem to address, especially in the marine environment. In this work, Nocardiopsis dassonville, a corrosive bacteria...journal article 2024
- document
-
Mohabeddine, A.I. (author), Eshaghi, Cyrus (author), Correia, José (author), Castro, José Miguel (author)This paper presents the flexural cyclic behavior of I-shaped hot rolled steel deep sections used as beams in moment-resisting frames (MRF) featuring a carbon fiber reinforced polymer (CFRP) patch on the web through advanced finite element analysis. The main goal of the CFRP reinforcement is to increase the rotation capacity of the member...conference paper 2024
- document
-
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
- document
-
Jiang, Quanxin (author)The need for more accurate cleavage modelling is particularly acute for a new generation of high-strength steels because they obtain their favourable properties through complex, multi-phase microstructures. One of the challenges in cleavage modelling is the strong sensitivity to material characteristics at the microlevel. This thesis proposes a...doctoral thesis 2023
- document
-
Morete Barbosa Bertolo, V. (author)The use of materials in increasingly severe service conditions raises concerns about structural safety with respect to cleavage fracture. There are three main material-related challenges that structures face under harsh environments: 1) the trade-off between strength and toughness; 2) the ductile-to-brittle transition behaviour of BCC high...doctoral thesis 2023
- document
-
Atreya, V. (author)Dual-phase (DP) steels are an important class of advanced high-strength steels (AHSS) and constitute a major share of steels for the automotive industry. A microstructure consisting of hard martensite embedded in a soft ferritic matrix gives them a good combination of strength and ductility. The martensite formation in the microstructure from...doctoral thesis 2023
- document
-
Yan, R. (author)High-strength steel (HSS) has higher strength but lower ductility than mild steel. The cross-section of the structural members may be reduced using HSS instead of mild steel, provided the buckling of elements does not govern the failure. The reduced member size benefits the environment and economy by means of less energy consumption, less carbon...doctoral thesis 2023