Searched for: author%3A%22Zhang%2C+X.%22
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Zhang, X. (author), Noel-Hermes, N. (author), Ferrari, G. (author), Hoogeland, M.G. (author)
Corrosion of mooring chains is regarded as one of main threats to the offshore mooring systems. Localized corrosion is even more dangerous than uniform corrosion because it may not show significant mass loss but it can cause stress concentration and initiate cracks under force, leading to accelerated degradation of mooring chains. Localized...
article 2022
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Huang, J. (author), Cao, Z. (author), Zhao, X. (author), Zhang, X. (author), Liu, Y. (author), Xiang, Y. (author), Gerini, G. (author), Koonen, A.M.J. (author)
In this article, a novel electrically controlled optical broadband phase shifter (ECO-BPS) is proposed and experimentally investigated for broadband microwave orbital angular momentum (OAM) mode generation. Based on the proposed ECO-BPS and a 17-element circular antenna array, the effect of the phase error on the OAM mode quality is studied by...
article 2020
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Zhang, X. (author), Hoogeland, M.G. (author)
After chain making, proof load testing is used to evaluate if the chains are mechanically qualified. However, proof load testing may bring elongation in the chain links that may affect the corrosion performance of mooring chains in seawater. The influence of deformation and microorganisms on the corrosion properties of chain steel in seawater...
article 2019
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Klijnstra, J. (author), Zhang, X. (author), van der Putten, S. (author), Röckmann, C. (author)
Offshore areas are rough and high energy areas. Therefore, offshore constructions are prone to high technical risks. This chapter elaborates on the technical risks of corrosion and biofouling and technical risks through mechanical force. The expected lifetime of an offshore structure is to a great extent determined by the risk of failures...
bookPart 2017
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Zhang, X. (author), Noel, N. (author), Ferrari, G. (author), Hoogland, M.G. (author)
Failures of mooring lines on floating production, storage and offloading systems (FPSOs) raise concern to the offshore industry. Localized corrosion of mooring chain is regarded as one of main failure mechanisms. The project of Localized Mooring Chain Corrosion (LMCC) is aiming at studying the mechanism of local corrosion on mooring chain steel...
conference paper 2016
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Homborg, A.M. (author), van Westing, E.P.M. (author), Tinga, T. (author), Ferrari, G.M. (author), Zhang, X. (author), de Wit, J.H.W. (author), Mol, J.M.C. (author)
This study validates the ability of Hilbert spectra to investigate transients in an electrochemical noise signal for an aqueous corrosion inhibition process. The proposed analysis procedure involves the identification and analysis of transients in the electrochemical current noise signal. Their decomposition into instantaneous frequencies in a...
article 2014
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Heyer, A. (author), D'Souza, F. (author), Zhang, X. (author), Ferrari, G.M. (author), Mol, J.M.C. (author), de Wit, J.H.W. (author)
This research paper addresses the biodegradation process for ballast tank coatings in marine environments. As part of this new approach, a commercially available ballast tank coating was exposed to bacteria obtained from a culture collection and to a natural bacterial community isolated from a real ballast tank. The natural community was chosen...
article 2014
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Homborg, A.M. (author), Tinga, T. (author), Zhang, X. (author), van Westing, E.P.M. (author), Oonincx, P.J. (author), de Wit, J.H.W. (author), Mol, J.M.C. (author)
Hilbert spectra allow identification of instantaneous frequencies that are attributed to specific corrosion mechanisms in electrochemical noise data. The present work proposes to identify and analyze areas of interest in Hilbert spectra, which enables to obtain valuable frequency information from electrochemicalnoise signals. Experiments were...
article 2013
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Arts, R.J. (author), Zhang, X. (author), Verdel, A.R. (author), Santonico, D. (author), Meekes, J.A.C. (author), Noorlandt, R.P. (author), Paap, B.F. (author), Vandeweijer, V.P. (author)
Since July 2008, CO2 is injected into a saline aquifer near the town of Ketzin in Germany. For monitoring the CO2-migration close to the injection well, TNO installed a fixed 2D seismic array of 120 meters length in 2009, with 3-component geophones at the surface, 4-component receivers at 50 meters depth and a central vertical array of 4...
article 2013
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Zhang, X. (author), Zevenbergen, J.F. (author), Benedictus, T. (author)
The corrosion behavior of casing steel N80 in brine plus CO2 was studied in autoclave to simulate the CO2 storage environment. The brine solution used in the study contained 130 g/l NaCl, 22.2 g/l CaCl2 and 4 g/l MgCl2. The CO2 was charged in the autoclave at different pressures (60, 80 and 100 bar) and at 45°C. The corrosion rate was measured...
article 2013
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Homborg, A.M. (author), van Westing, E.P.M. (author), Tinga, T. (author), Zhang, X. (author), Oonincx, P.J. (author), Ferrari, G.M. (author), de Wit, J.H.W. (author), Mol, J.M.C. (author)
Hilbert spectra, calculated with the Hilbert–Huang transform, are presented here as an analysis technique for the characterization of electrochemical noise data in corrosion studies. A highly detailed decomposition of the original current and potential data is provided in time and frequency simultaneously. Results on the decomposition of...
article 2013
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Zhang, X. (author), Zevenbergen, J.F. (author), Spruijt, M.P.N. (author), Borys, M. (author)
CO2 flue gases acquired from different sources contain a significant amount of impurities and water, which are corrosive to the pipeline steel. To design the pipelines for large scale of CO2 flue gas transport, the corrosion of pipeline steels has to be investigated in the realistic conditions. In this paper, corrosion behaviour of steel S355...
article 2013
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Zhang, X. (author), Zhan, H. (author), Zevenbergen, J. (author)
The corrosion behavior of the N80 casing and Cr13 steels was studied in a brine-CO2 mixture in autoclaves using electrochemical measurements and mass loss test. The brine solution contained 130 g/l NaCl, 22.2 g/l CaCl2 and 4 g/l MgCl2, representative for formation waters in North Sea wells. The objectives were to gain substantial cor-rosion data...
conference paper 2013
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Zhang, X. (author), Kermen. E., (author)
This report focuses on the corrosion monitoring and corrosion sensor systems, for use in CO2 storage wells, including a sensitivity analysis. The feasibility for using new sensors to measure well integrity based on electrochemical principles is investigated. The use of corrosion sensors in CO2 storage wells is at its infancy. The application of...
report 2013
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Pozo Torres, J.M. (author), Kumar, P. (author), Lo Cascio, D.M.R. (author), Khanna, A. (author), Dumon, P. (author), Delbeke, D. (author), Baets, R. (author), Fournier, M. (author), Fedeli, J.-M. (author), Fulbert, L. (author), Zimmermann, L. (author), Tillack, B. (author), Tian, H. (author), Aalto, T. (author), O'Brien, P. (author), Deptuck, D. (author), Xu, J. (author), Zhang, X. (author), Gale, D. (author)
ePIXfab brings silicon photonics within reach of European small and medium sized enterprises, thereby building on its track record and its integration into Europractice. To this end, ePIXfab offers affordable access to standardized active and passive silicon photonic IC and packaging technology, a path from design to manufacturing and hands-on...
conference paper 2012
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Zhang, X. (author), Buter, S. (author), Ferrari, G. (author), Prent, C.S.W. (author)
The application of coatings in ballast water tanks is critical for the safety of cargo ships. International Maritime Organization (IMO) has delivered a standard for the protection of water ballast tanks in which new built cargo vessels have to comply with {resolution MSC.215(82)}. In case the procedure of applying coatings differs from the IMO...
conference paper 2012
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Santonico, D. (author), Zhang, X. (author), Verdel, A.R. (author), Meekes, J.A.C. (author), Arts, R.J. (author)
Since July 2008 CO<inf>2</inf> is injected into a saline aquifer near Ketzin, in Germany. The reservoir used for CO<inf>2</inf> injection is the Stuttgart Formation of Triassic age, located at a depth of about 650 m. Close to the injection well, TNO designed and implemented a permanent shallow seismic monitoring system. The system consists of 3C...
conference paper 2012
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Ferrari, G.M. (author), Buter, S.J. (author), Zhang, X. (author), Prent, C.S.W. (author)
Corrosion protection of ballast water tanks is very precarious because of the aggressiveness of the environment and the difficult accessibility of the areas. Numerous accidents have led to regulation by the International Maritime Organization (IMO). Practical circumstances in yards are often not ideal; therefore it is of interest to investigate...
conference paper 2012
document
Homborg, A.M. (author), Tinga, T. (author), Zhang, X. (author), van Westing, E.P.M. (author), Oonincx, P.J. (author), de Wit, J.H.W. (author), Mol, J.M.C. (author)
Electrochemical current and potential noise signals in many cases exhibit a DC drift that should be removed prior to further data analysis. The theoretical ability of wavelet analysis and empirical mode decomposition to effectively remove only the DC drift component is evaluated based on their mutual performance for the first time. The...
article 2012
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Zhang, X. (author), Paulssen, H. (author)
The Gulf of California, which forms part of the Pacific-North American plate boundary, is an ideal place to investigate upper mantle dynamics in a continental rifting area. With 19 seismic stations located around the gulf, the NARS-Baja experiment (2002-2008) was designed to image its crustal and mantle structure. Here we present results of a...
article 2012
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