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Sun, B. (author), Fan, Xuejun (author), Li, Lei (author), Ye, H. (author), van Driel, W.D. (author), Zhang, Kouchi (author)This paper studies the interaction of catastrophic failure of the driver and LED luminous flux decay for an integrated LED lamp with an electrolytic capacitor-free LED driver. Electronic thermal simulations are utilized to obtain the lamp's dynamic history of temperature and current for two distinct operation modes: constant current mode (CCM...journal article 2017
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Sun, B. (author), Fan, Xuejun (author), Ye, H. (author), Fan, Jiajie (author), Qian, Cheng (author), van Driel, W.D. (author), Zhang, Kouchi (author)In this paper, an integrated LED lamp with an electrolytic capacitor-free driver is considered to study the coupling effects of both LED and driver's degradations on lamp's lifetime. An electrolytic capacitor-less buck-boost driver is used. The physics of failure (PoF) based electronic thermal simulation is carried out to simulate the lamp's...journal article 2017
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Qian, C. (author), Mirza Gheytaghi, Amir (author), Fan, J. (author), Tang, H. (author), Sun, B. (author), Ye, H. (author), Zhang, Kouchi (author)As an increasing attention towards sustainable development of energy and environment, the power electronics (PEs) are gaining more and more attraction on various energy systems. The insulated gate bipolar transistor (IGBT), as one of the PEs with numerous advantages and potentials for development of higher voltage and current ratings, has been...journal article 2018
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Chen, B. (author), Sun, Yubo (author), Jacquemin, Loic (author), Zhang, Shizhe (author), Blom, Kees (author), Lukovic, M. (author), Ye, G. (author)At present, most municipal solid waste incineration (MSWI) bottom ash, as being disposed of as waste, is directly landfilled, raising concern about the environmental issue and potential loss of resources. Given that the natural raw materials used for cement production are being depleted, the recycling of MSWI bottom ash for the application as...conference paper 2019
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Sun, Yubo (author), Chen, B. (author), Zhang, Shizhe (author), Blom, Kees (author), Lukovic, M. (author), Ye, G. (author)In recent years, the rapid industrialization and urbanization led to the explosive growth of municipal solid waste incineration (MSWI) bottom ashes (BA) production. However, most of them are directly landfilled, which not only brings environmental burden but also results in loss of potential resources. Present researches have proved that MSWI BA...conference paper 2021
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Wang, Shuai (author), Toumi, Ralf (author), Ye, Qinghua (author), Ke, Q. (author), Bricker, J.D. (author), Tian, Zhan (author), Sun, Laixiang (author)It has been shown that the proportion of intense tropical cyclones (TCs) has been increasing together with a poleward migration of TC track. However, their relative importance to TC surge at landfall remains unknown. Here we examine the sensitivity of TC surge in Shanghai to landfall location and intensity with a new dynamical modelling...journal article 2021
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Sun, Yubo (author), Chen, Boyu (author), Zhang, Shizhe (author), Blom, Kees (author), Luković, Mladena (author), Ye, Guang (author)In recent years, the rapid industrialization and urbanization led to the explosive growth of municipal solid waste incineration (MSWI) bottom ashes (BA) production. However, most of them are directly landfilled, which not only brings environmental burden but also results in loss of potential resources. Present researches have proved that MSWI BA...conference paper 2021
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Sun, Beibei (author), Ye, Guang (author), De Schutter, Geert (author)Alkali-activated materials(AAM) are known to be environmentally friendly alternatives to cement-based materials because they can potentially reduce greenhouse gas emissions and reutilize industrial by-products. However, the application of AAM is still limited by the lack of mixture design regulation. Unlike cement, the very different chemical...conference paper 2021
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Sun, Beibei (author), Sun, Yubo (author), Ye, G. (author), De Schutter, Geert (author)In this paper, a series of experiments were conducted to systematically and quantitively explore the effects of control factors on the early age properties, i.e., workability and strength of slag and fly ash-based alkali-activated paste (BFS/FA-AAP). The control factors on the workability (flowability and setting time) of BFS/FA-AAP include...journal article 2022
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Sun, Yubo (author), Ghorbani, Saeid (author), Dai, Xiaodi (author), Ye, G. (author), De Schutter, Geert (author)This study provides a detailed investigation on the reproducibility of two groups of alkali-activated slag (AAS) mixtures, from both fresh properties and strength development perspectives. Three different commercial sodium silicate solutions and one lab-produced silicate activator (made of silica fume and sodium hydroxide) were used to...journal article 2022
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Sun, Beibei (author), Ye, G. (author), de Schutter, Geert (author)Alkali-activated materials (AAM) are known to be environmentally friendly alternatives to cement-based materials because they can potentially reduce greenhouse gas emissions and reutilize industrial by-products/wastes. To study the factors influencing the strength of slag based alkali-activated materials (BFS-AAM), fly ash based alkali...review 2022
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Li, Shizhen (author), Liu, Yang (author), Ye, H. (author), Liu, X. (author), Sun, Fenglian (author), Fan, Xuejun (author), Zhang, Kouchi (author)This paper studied the behaviors of sintering between Ag nanoparticle (NP) and nanoflake (NF) in the same size by molecular dynamics simulation. Before the sintering simulation, the melting simulation of NF was carried out to calculate the melting points of NFs and investigate the thermostability of NF. The Lindemann index and potential...journal article 2022
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Xu, H. (author), Tian, Zhan (author), Sun, Laixiang (author), Ye, Qinghua (author), Ragno, E. (author), Bricker, J.D. (author), Tan, Jinkai (author), Ke, Q. (author), Wang, Shuai (author)Compound flooding is generated when two or more flood drivers occur simultaneously or in close succession. Multiple drivers can amplify each other and lead to greater impacts than when they occur in isolation. A better understanding of the interdependence between flood drivers would facilitate a more accurate assessment of compound flood risk...journal article 2022
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Sun, Yubo (author), Tao, Yaxin (author), Rahul, A. V. (author), Ye, G. (author), De Schutter, Geert (author)The rapid workability loss of alkali-activated materials (AAM) has been a major obstacle limiting its onsite application. In this study, two conventional SPs (made of polynaphthalene sulfonate (PNS) and lignosulfonate (LS) salts), which have been reported to be effective in some specific AAM mixtures were separately applied in alkali...journal article 2022
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Sun, Yubo (author), Liu, Zhiyuan (author), Ghorbani, Saeid (author), Ye, G. (author), De Schutter, Geert (author)The present study explores the possibility of replacing blast furnace slag (BFS) with coal fly ash (FA) to produce alkali-activated material (AAM) concrete with hybrid precursors. With an increased FA replacement ratio, the reaction kinetics, fresh and hardened properties of AAM mixtures have been investigated. The retardation effect on the...journal article 2022
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Rossi, Laura (author), Miranda de Lima Junior, L.C. (author), Sun, Yubo (author), Dehn, Frank (author), Provis, John L. (author), Ye, G. (author), De Schutter, Geert (author)The production of cement and concrete contributes significantly to global greenhouse gas emissions. Alkali‐activated concretes (AACs) are a family of existing alternative construction materials that could reduce the current environmental impact of Portland cement (PC) production and utilisation. Successful applications of AACs can be found in...journal article 2022
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Sun, Yubo (author), Zhang, Shizhe (author), Rahul, A. V. (author), Tao, Yaxin (author), Van Bockstaele, Filip (author), Dewettinck, Koen (author), Ye, G. (author), De Schutter, Geert (author)This study aims to interpret the early-stage rheology of alkali-activated slag (AAS) paste from microstructure perspectives. The microstructures visualized by cryogenic scanning electron microscopy (cryo-SEM) revealed the essential distinction between hydroxide and silicate-activated slag pastes. The hydroxide-based mixture showed typical...journal article 2022
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Sun, Yubo (author), Cheng, H. (author), Zhang, Shizhe (author), Mohan, Manu K. (author), Ye, G. (author), De Schutter, Geert (author)Alkali-activated concrete (AAC) is regarded as a promising alternative construction material to reduce the CO<sub>2</sub> emission induced by Portland cement (PC) concrete. Due to the diversity in raw materials and complexity of reaction mechanisms, a commonly applied design code is still absent to date. This study attempts to directly...journal article 2023
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Sun, Beibei (author), Sun, Yubo (author), Ye, G. (author), De Schutter, Geert (author)Although the application of blast furnace slag and fly ash-based alkali-activated concrete (BFS/FA-AAC) has both economic and environmental benefits, it is limited by the lack of a straightforward mix design method. In this paper, an experiment was conducted to investigate the effect of control factors, including the Na<sub>2</sub>O/binder...journal article 2023
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Sun, Yubo (author), Ghorbani, Saeid (author), Ye, G. (author), De Schutter, Geert (author)Alkali-activated material (AAM) is developed as a green alternative binder to replace Portland cement (PC) in the construction field. However, the large-scale application with AAM concrete is limited so far, with the insufficient knowledge of rheological behavior being a major obstruct. Thixotropy of concrete is of great interest, which can...book chapter 2023
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