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Zhang, Y. (author)Wind energy is one of the most important renewable energy sources, effectively addressing climate change issues and promoting sustainable development on a global scale. Blade failures may cause long shut-down times and may present a safety hazard. Continuous and real-time monitoring of the blade conditions is helpful for finding blade damage at...doctoral thesis 2024
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Feng, Lichao (author), Yi, Shengjie (author), Zhao, Shuyuan (author), Zhong, Qiucheng (author), Ren, Feirong (author), Liu, C. (author), Zhang, Y. (author), Wang, Wenshou (author), Li, Zhenming (author)Recycling aluminosilicate-based solid wastes is imperative to realize the sustainable development of constructions. By using alkali activation technology, aluminosilicate-based solid wastes, such as furnace slag, fly ash, red mud, and most of the bio-ashes, can be turned into alternative binder materials to Portland cement to reduce the carbon...review 2024
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Zhang, Y. (author), Du, L. (author), Bäcke, Olof (author), Kalbfleisch, Sebastian (author), Zhang, Kouchi (author), Vollebregt, S. (author), Hörnqvist Colliander, Magnus (author)As the dimensions of interconnects in integrated circuits continue to shrink, an urgent need arises to understand the physical mechanism associated with electromigration. Using x-ray nanodiffraction, we analyzed the stresses in Blech-structured pure Cu lines subjected to different electromigration conditions. The results suggest that the...journal article 2024
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Frey, S. (author), Zhang, Y. (author), Perger, K. (author), An, T. (author), Gabányi, K. (author), Gurvits, L. (author), Hwang, C. Y. (author), Koptelova, E. (author), Paragi, Z. (author), Fogasy, J. (author)Context. The existence of accreting supermassive black holes of up to billions of solar masses at early cosmological epochs (in the context of this work, redshifts z & 6) requires very fast growth rates that are challenging to explain. The presence of a relativistic jet can be a direct indication of activity and accretion status in active...journal article 2024
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Zhao, Y. (author), Zhang, Y. (author), Tao, Q. (author)Deep learning-based methods have achieved prestigious performance for magnetic resonance imaging (MRI) reconstruction, enabling fast imaging for many clinical applications. Previous methods employ convolutional networks to learn the image prior as the regularization term. In quantitative MRI, the physical model of nuclear magnetic resonance...conference paper 2024
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Li, Xinqi (author), Zhang, Y. (author), Zhao, Y. (author), van Gemert, J.C. (author), Tao, Q. (author)Quantitative cardiac magnetic resonance imaging (MRI) is an increasingly important diagnostic tool for cardiovascular diseases. Yet, co-registration of all baseline images within the quantitative MRI sequence is essential for the accuracy and precision of quantitative maps. However, co-registering all baseline images from a quantitative...conference paper 2024
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Zhang, Y. (author)Freight transport faces a threefold challenge of limited resources, increasing demand for efficient goods movement, and the pressing need to meet ambitious emissions reduction targets in ever shorter timelines. To address these challenges, the industry requires urgent innovation and the adoption of new technologies and logistics systems to...doctoral thesis 2023
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Zhang, Y. (author), Avallone, F. (author), Watson, S.J. (author)In this paper, the feasibility of using far-field acoustic measurements as a non-contact monitoring technique for wind turbine blade leading edge erosion is assessed. For this purpose, a DU96 W180 airfoil with several eroded leading edge configurations of different severities is experimentally investigated. The eroded leading edges are designed...journal article 2023
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Mo, J. (author), LI, J. (author), Zhang, Y. (author), Romijn, J. (author), May, Alexander (author), Erlbacher, Tobias (author), Zhang, Kouchi (author), Vollebregt, S. (author)In this work, a highly linear temperature sensor based on a silicon carbide (SiC) p-n diode is presented. Under a constant current biasing, the diode has an excellent linear response to the temperature (from room temperature to 600°C). The best linearity (coefficient of determination ${R}^{{2}}$ = 99.98%) is achieved when the current density...journal article 2023
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Kavoura, Dr. Florentia (author), Zhang, Y. (author), Veljkovic, M. (author)The building sector is actively researching and reviewing technical solutions for de-construction, driven by the increasing importance of sustainability requirements, as outlined in the EU Commission's ‘Green Deal,‘ which aims to achieve net-zero greenhouse gas emissions by 2050. Two key research areas in efficient structural design strategies...conference paper 2023
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Li, Xinhong (author), Ma, Jie (author), Han, Ziyue (author), Zhang, Y. (author), Yang, M. (author)This paper presents a game theory methodology for risk management of urban natural gas pipelines, which is a collaborative participation mechanism of the stakeholders, including government, pipeline companies, and the public. Firstly, the involvement proportion of stakeholders in risk management under rational conditions is estimated by the...journal article 2023
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Zhang, Y. (author), Chen, Y. (author), Copuroglu, Oguzhan (author)This paper presents the influence of P<sub>2</sub>O<sub>5</sub> incorporated in slag on the hydration characteristics of cement-slag system. It was found that the gradual addition of phosphorus oxide in slag did not change overall mineralogy of the hydration products. Except hydration retardation in the dormant stage, chemically bound water...journal article 2023
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Zhang, Y. (author), Saravanakumar, Karthikeyan (author), Copuroglu, Oguzhan (author)For a better understanding of the hydrotalcite-like phase with SEM-EDS microanalysis, the present research paid special attention to the data acquisition and interpretation of this technique. A lower Mg/Al ratio was obtained when using a higher accelerating voltage, and a beam energy of 10 kV was more appropriate than 15 kV for investigation...journal article 2023
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Yu, Y. (author), Oser, D.J.H. (author), Da Prato, G. (author), Urbinati, E. (author), Ávila, Javier Carrasco (author), Zhang, Y. (author), Remy, Patrick (author), Marzban, S. (author), Groeblacher, S. (author), Tittel, W. (author)Single quantum emitters embedded in solid-state hosts are an ideal platform for realizing quantum information processors and quantum network nodes. Among the currently investigated candidates, Er3+ ions are particularly appealing due to their 1.5 μm optical transition in the telecom band as well as their long spin coherence times. However,...journal article 2023
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Zhang, Y. (author), Copuroglu, Oguzhan (author)Through the integration of SEM-BSE and TEM, we gained a comprehensive 3-dimensional understanding of different distribution patterns of inner hydration products of slag. For fully hydrated small slag grains, two distinct sub-zones were formed in the rims. Lath-like, well-crystalline hydrotalcite-like crystals were found to precipitate, grow,...journal article 2023
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Zhang, Y. (author), Zhang, Shizhe (author), Liu, C. (author), Copuroglu, Oguzhan (author)In this paper, the authors characterized two types of zonation within slag rims in aged alkali-activated slag (AAS) systems through SEM and TEM technology. These two elemental zonation were closely related to the pore structure of AAS pastes, thus providing strong implication for the transport- and durability-related performance of AAS...journal article 2023
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Chen, Y. (author), Zhang, Y. (author), He, S. (author), Liang, X. (author), Schlangen, E. (author), Copuroglu, Oguzhan (author)In 3D concrete printing, fast structuration is a prerequisite for ideal buildability. This paper aims to study the impact of inorganic additives, i.e., CaCl<sub>2</sub> and gypsum, on structural build-up and very early-age hydration of limestone-calcined clay-cement (LC3) pastes within the first 70–80 min. Results show that, increasing the...journal article 2023
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Zhang, Y. (author), Mo, J. (author), Cui, Z. (author), Vollebregt, S. (author), Zhang, Kouchi (author)The continuous downscaling of microelectronics has introduced many reliability issues on interconnect. Electromigration and dewetting are major reliability concerns in high-temperature micro- and nanoscale devices. In this paper, the local dewetting of copper thin film during the electromigration test was first found and investigated. When...conference paper 2023
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Qu, Yiting (author), He, Xinlei (author), Pierson, Shannon (author), Backes, Michael (author), Zhang, Y. (author), Zannettou, S. (author)The dissemination of hateful memes online has adverse effects on social media platforms and the real world. Detecting hateful memes is challenging, one of the reasons being the evolutionary nature of memes; new hateful memes can emerge by fusing hateful connotations with other cultural ideas or symbols. In this paper, we propose a framework that...conference paper 2023
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Liang, M. (author), Zhang, Y. (author), He, S. (author), Chen, Y. (author), Schlangen, E. (author), Šavija, B. (author)This study investigated the evolution process of high-volume slag cement (HVSC) paste from a chemo-mechanical standpoint. HVSC specimens with a 70 w.t. % slag replacement rate were studied at various ages. Evolution of phase assemblage, microstructure development, and micromechanical properties were analyzed using TGA/XRD/MIP/SEM-EDS and nano...journal article 2023