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Liu, Y. (author), Ferrari, Riccardo M.G. (author), Wu, Ping (author), Jiang, X. (author), Li, Sunwei (author), van Wingerden, J.W. (author)
Floating Offshore Wind Turbines (FOWTs) operate in the harsh marine environment with limited accessibility and maintainability. Not only failures are more likely to occur than in land-based turbines, but also corrective maintenance is more expensive. In the present study, a mixed model and signal-based Fault Diagnosis (FD) architecture is...
journal article 2021
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Liu, M. (author)
Landscape design focuses on the construction and articulation of outdoor space and results in landscape architectonic compositions. In order to communicate about three-dimensional forms and functions, vocabulary, representations, and tools (in terms of spatial-visual characteristics) are of fundamental importance for landscape architects to...
doctoral thesis 2020
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Liu, X. (author)
Railway crossings are essential components of the railway track system that allow trains to switch from one track to another. Due to the complex wheel-rail interaction in the crossing panel, crossings are vulnerable elements of railway infrastructure and usually have short service lives. The crossing damage not only results in substantial...
doctoral thesis 2020
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Wen, Weijie (author), Li, Pengyu (author), Cao, Hong (author), Liu, Haijin (author), Wang, Xingguo (author), Lv, Hui (author), Li, Bin (author), Popov, M. (author)
Due to the progressive penetration and usage of renewable sources and loads based on power electronics, medium voltage direct current (MVDC) distribution system is getting broad attention. Direct current circuit breakers (DCCBs) are of vital importance for the reliability and flexibility of power system. With features of low cost and micro...
journal article 2020
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Liu, H. (author)
The wind energy industry has gained a key role in the global fight against greenhouse gas emissions. Although fossil fuels have still the largest share in the global energy mix, the production of wind energy, especially offshore, has rapidly grown since the 1990s. According to the International Energy Association, Europe targets offshore wind to...
doctoral thesis 2020
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Liu, Y. (author)
The progress of modern biotechnology has enabled the development of fermentation processes for the production of fuels and chemicals from renewable feedstocks. The current fermentation processes for bio-based production commonly start with a growth phase of the microorganisms followed by a production phase. This implies that biomass formation...
doctoral thesis 2020
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Liu, S. (author)
Large shallow lakes plays a significant role in the rapid urbanization process. A series of problems have occurred due to urbanization including water quality degradation, flood intensity increase, ecological and environmental issues etc. One of the most important threat comes from eutrophication, as it deteriorates water quality, introduces...
doctoral thesis 2020
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Liu, Dong (author), Song, Xiaowei (author), Deng, Fujin (author), Dong, J. (author)
High-Temperature superconducting (HTS) generators are being considered as a competitive candidate in large direct-drive (DD) wind turbines because of their features of being lightweight and compact. Normally a large air gap is inevitable in partially HTS generators, sacrificing the torque producing capability. In this paper, multi-phase...
journal article 2020
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Zhang, Junhong (author), Liu, Zhiyuan (author), Dai, Huwei (author), Hedayati, R. (author), Yuan, Y. (author), Zhang, Guichang (author)
Bird impact on fan blades poses a serious threat to the operational safety of aircraft engines.In this study, a real bird model of mallard duck was developed using the smooth particle hydrodynamics method based on a CT scan of a mallard duck.The accuracy of the real bird model was verified by comparing the simulation results of the impact on...
journal article 2020
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Urso, A. (author), Chen, Y. (author), Dijkhuis, Johan F. (author), Liu, Yao-Hong (author), Babaie, M. (author), Serdijn, W.A. (author)
This article presents guidelines for designing the power supply blocks of RF oscillators. To preserve their spectral purity, the requirements on the noise and ripple of the supply voltage are firstly evaluated based on the oscillator supply pushing factor and the oscillator Figure-of-Merit (FOM). Those specifications are then employed to design...
journal article 2020
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Li, Z. (author), Jiang, X. (author), Hopman, J.J. (author), Zhu, Ling (author), Liu, Zhiping (author)
In this paper, we experimentally studied the external surface crack growth in steel pipes reinforced with Composite System Repaired (CRS). CRS reinforced surface cracked API 5L X65 pipes were tested, containing three initial notch sizes and four reinforcement schemes. During the tests, the crack growth results, as well as the strain on the...
journal article 2020
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Xiao, Hong (author), Yan, Dongwei (author), Liu, Guangpeng (author), Wang, Haoyu (author)
High-speed railways adopt continuous welded rail to maintain the smoothness and continuity of the rail surface. However, the welded joint became one of the weakest parts. In order to clear the characteristics and mechanical properties of the new reinforced device, a dynamic three-dimensional vehicle-reinforced device-track coupling model is...
journal article 2020
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Ren, S. (author), Liu, X. (author), Wang, H. (author), Fan, Weiyu (author), Erkens, S. (author)
Recycling technology is widely used in the asphalt road construction due to its environmental and economic effects. Many efforts have focused on the performance restoration of aged base asphalt by adding light oil, but the possibility of recycling the aged asphalt using low-viscosity asphalt and polymers has been few explored. Therefore, the...
journal article 2020
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Wang, H. (author), Liu, X. (author), Apostolidis, P. (author), Erkens, S. (author), Scarpas, Athanasios (author)
Rubber swelling in bitumen, which is a diffusion-induced volume expansion process, plays a dominant role in the design of crumb rubber modified bitumen binders and their properties development. This study aims to investigate the kinetics of bitumen diffusion into truck tire rubber, the equilibrium swelling characteristics of rubber, and the...
journal article 2020
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Lu, Guoyang (author), Wang, H. (author), Törzs, Tom (author), Liu, Pengfei (author), Zhang, Yuqing (author), Wang, Dawei (author), Oeser, Markus (author), Grabe, Jürgen (author)
Permeable pavements have been widely used as an effective means to improve hydrological characteristics and the ecology of the urban environment. This study aims to investigate the response of fully permeable pavement (FPP) subjected to dynamic loading under dry and saturated conditions. A full-scale test track topped with polyurethane bound...
journal article 2020
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Liu, G. (author), Zhang, Ya (author), Liu, X. (author), Hammes, Frederik (author), Liu, Wen Tso (author), Medema, G.J. (author), Wessels, Peter (author), van der Meer, W.G.J. (author)
In the present study, triplicate rings of 360° pipe surfaces of an operational drinking water distribution pipe were swabbed. Each ring was equally divided into 16 parts for swabbing. The collected swabs were grouped into 3 sections and compared with the biofilm samples sampled by sonication of specimens from the same pipe. The results showed...
journal article 2020
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Onencan, A.M. (author), Liu, Lian Ena (author), van de Walle, B.A. (author)
The global impacts of disaster risks are on the rise. Moreover, evidence shows that the severity of damage will increase exponentially. In 2019, there were 395 natural disasters that caused 11,755 deaths. Literature and practice indicate that diversification of disaster risk management (DRM) approaches can make communities more resilient. One...
journal article 2020
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Sousi, Mohaned (author), Liu, G. (author), Salinas-Rodriguez, Sergio G. (author), Chen, L. (author), Dusseldorp, Jos (author), Wessels, Peter (author), Schippers, Jan C. (author), Kennedy, M.D. (author), van der Meer, Walter (author)
Although water produced by reverse osmosis (RO) filtration has low bacterial growth potential (BGP), post-treatment of RO permeate, which is necessary prior to distribution and human consumption, needs to be examined because of the potential re-introduction of nutrients/contaminants. In this study, drinking water produced from anaerobic...
journal article 2020
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Liu, Fei (author), Page, Aaron (author), Strode, Sarah A. (author), Yoshida, Yasuko (author), Choi, Sungyeon (author), Zheng, Bo (author), Lamsal, Lok N. (author), Veefkind, j. Pepijn (author), Levelt, Pieternel Felicitas (author)
China's policy interventions to reduce the spread of the coronavirus disease 2019 have environmental and economic impacts. Tropospheric nitrogen dioxide indicates economic activities, as nitrogen dioxide is primarily emitted from fossil fuel consumption. Satellite measurements show a 48% drop in tropospheric nitrogen dioxide vertical column...
journal article 2020
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Liu, Y. (author), Fontanella, A. (author), Wu, P. (author), Ferrari, Riccardo M.G. (author), van Wingerden, J.W. (author)
Floating Offshore Wind Turbines (FOWTs) are more prone to suffer from faults and failures than bottom-fixed counterparts due to the severe wind and wave loads typical of deep water sites. In particular, mooring line faults may lead to unacceptably high operation and maintenance costs due to the limited accessibility of FOWTs. Detecting the...
journal article 2020
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