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Mulder, G. (author), van Leijen, F.J. (author), Hanssen, R.F. (author)The observed phase in time series of interferometric synthetic aperture radar (InSAR) products is a superposition of various components. Differential topography, line-of-sight displacements, and differential atmospheric delays are the main contributions and need to be disentangled to derive accurate digital elevation model (DEM), deformation,...journal article 2023
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Koymans, M.R. (author), de Zeeuw-van Dalfsen, E. (author), Sepúlveda, J. (author), Evers, L.G. (author), Giniaux, J. M. (author), Grapenthin, R. (author), Hooper, A. (author), Ófeigsson, B. G. (author), Sigmundsson, F. (author), Yang, Y. (author)In August 2021, Askja volcano in Iceland returned to the spotlight after a sudden onset of rapid uplift followed decades of continuous subsidence. In this study the extended record of microgravity data from Askja between 1988 to 2017 is revisited, and new microgravity data from 2021 and 2022 are introduced, which were collected after the...journal article 2023
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Truong-Hong, Linh (author), Lindenbergh, R.C. (author), Woudenberg, Pieter (author), Gard, W.F. (author), van de Kuilen, J.W.G. (author)Churches are part of heritage structures that take an important role in Europe ́s cultural identity. As such, these structures must be protected to prevent catastrophic collapse and any damage must be reported timely to establish planning to maintenance and restoration. This can be achievable when the churches are monitored periodically with...conference paper 2021
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Truong-Hong, Linh (author), Nguyen, N. (author), Lindenbergh, R.C. (author), Fisk, P. (author), Huynh, T. (author)This paper proposes a methodology to automatically extract components of an oil storage tank from terrestrial laser scanning (TLS) point clouds, and subsequently to create a three-dimensional (3D) solid model of the tank for numerical simulation. The proposed method is integrated into a smart analysis layer of a digital twin platform...journal article 2021
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Palin, D. (author), Style, Robert W. (author), Zlopasa, J. (author), Petrozzini, Jonathan J. (author), Pfeifer, Mark A. (author), Jonkers, H.M. (author), Dufresne, Eric R. (author), Estroff, Lara A. (author)The promise of crystal composites with direction-specific properties is an attractive prospect for diverse applications; however, synthetic strategies for realizing such composites remain elusive. Here, we demonstrate that anisotropic agarose gel networks can mechanically "mold" calcite crystal growth, yielding anisotropically structured,...journal article 2021
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Rocca, Fabio (author), Li, Deren (author), Tebaldini, Stefano (author), Liao, Mingsheng (author), Zhang, Lu (author), Lombardini, Fabrizio (author), Balz, Timo (author), Haala, Norbert (author), Ding, Xiaoli (author), Hanssen, R.F. (author)This paper reports on the activities carried out in the context of “Dragon project 32278: Three‐ and Four‐Dimensional Topographic Measurement and Validation”. The research work was split into three subprojects and encompassed several activities to deliver accurate characterization of targets on land surfaces and deepen the current knowledge...journal article 2021
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Truong-Hong, Linh (author), Lindenbergh, R.C. (author), Nguyen, Thu Anh (author)Purpose: Terrestrial laser scanning (TLS) point clouds have been widely used in deformation measurement for structures. However, reliability and accuracy of resulting deformation estimation strongly depends on quality of each step of a workflow, which are not fully addressed. This study aims to give insight error of these steps, and results...journal article 2021
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Truong-Hong, Linh (author), Lindenbergh, R.C. (author)Defects in a construction site is inevitable and these defects must be inspected and reported timely to minimize extract cost due to repair the defects. However, in practice, quality of structural elements is often inspected by a site supervisor with traditional tools (e.g. measuring tapes, total stations or levelling) at only specific locations...conference paper 2020
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Minh, Dinh Ho Tong (author), Hanssen, R.F. (author), Rocca, Fabio (author)The research and improvement of methods to be used for deformation measurements from space is a challenge. From the previous 20 years, time series Synthetic Aperture Radar (SAR) interferometry techniques have proved for their ability to provide millimeter-scale deformation measurements over time. This paper aims to provide a review of such...journal article 2020
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Zaminpardaz, S. (author), Teunissen, P.J.G. (author), Tiberius, C.C.J.M. (author)In this contribution, we propose a method for statistically evaluating the risk in a deformation monitoring system. When the structure under monitoring moves beyond tolerance, the monitor system should issue an alert. Only a very small probability is acceptable of the system telling us that no change beyond a critical threshold has taken...journal article 2020
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Teunissen, P.J.G. (author), Zaminpardaz, S. (author), Tiberius, C.C.J.M. (author)In safety-critical applications, deformation monitoring systems are required to issue timely alerts when a deformation beyond a critical threshold occurs. Only a very small probability of failing to issue an alert when in fact one should have been given, is acceptable. This probability is referred to as integrity risk. In this contribution,...journal article 2020
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Troian, S (author), Grunewald, S. (author), Schlangen, E. (author), Copuroglu, Oguzhan (author)The production of double-curved precast concrete elements for cladding or shell structures requires expensive CNC (computer numerical control)-milled formwork. As an alternative method, the innovative flexible mould for economically efficient and sustainable production of such elements is discussed in this paper. This method comprises the use of...conference paper 2018
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Cao, Pinqiang (author), Wu, Jianyang (author), Zhang, Zhisen (author), Fang, Bin (author), Peng, Li (author), Li, Tianshu (author), Vlugt, T.J.H. (author), Ning, Fulong (author)A sound knowledge of fundamental mechanical properties of water ice is of crucial importance to address a wide range of applications in earth science, engineering, as well as ice sculpture and winter sports, such as ice skating, ice fishing, ice climbing, bobsleighs, and so on. Here, we report large-scale molecular dynamics (MD) simulations...journal article 2018
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Qin, Xiaoqiong (author), Yang, M. (author), Zhang, L. (author), Yang, Tianliang (author), Liao, Mingsheng (author)Since the Persistent Scatterer Synthetic Aperture Radar (SAR) Interferometry (PSI) technology allows the detection of ground subsidence with millimeter accuracy, it is becoming one of the most powerful and economical means for health diagnosis of major transportation infrastructures. However, structures of different types may suffer from...journal article 2017
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Mahapatra, P.S. (author), van der Marel, H. (author), van Leijen, F.J. (author), Samiei Esfahany, S. (author), Klees, R. (author), Hanssen, R.F. (author)Deformation estimates from Interferometric Synthetic<br/>Aperture Radar (InSAR) are relative: they form a ‘free’<br/>network referred to an arbitrary datum, e.g. by assuming a reference<br/>point in the image to be stable. However, some applications<br/>require ‘absolute’ InSAR estimates, i.e. expressed in<br/>a well-defined terrestrial...journal article 2017
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Ketelaar, VBH (author)The start of hydrocarbon production in the 1960s in the northeastern part of the Netherlands has resulted in subsidence of the ground level, which has been estimated from periodic leveling campaigns. Although leveling is a precise and reliable technique for subsidence monitoring, it is labor intensive, expensive and poses a safety risk since...doctoral thesis 2008
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