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Browsing NTNU Open by Author "Løset, Sveinung"

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Now showing items 1-20 of 29

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    • A large scale simulation of floe-ice fractures and validation against full-scale scenario 

      Lu, Wenjun; Heyn, Hans-Martin; Lubbad, Raed; Løset, Sveinung (Journal article; Peer reviewed, 2018)
      While interacting with a sloping structure, an ice floe may fracture in different patterns. For example, it can be local bending failure or global splitting failure depending on the contact properties, geometry and confinement ...
    • A method for real-time estimation of full-scale global ice loads on floating structures 

      Kjerstad, Øivind Kåre; Lu, Wenjun; Skjetne, Roger; Løset, Sveinung (Journal article; Peer reviewed, 2018)
      This paper proposes an algorithm that uses conventional measurements found on-board ships coupled with additional Inertial Measurement Units to estimate the motions and global loads acting on them. The work is motivated ...
    • An Ice-Drift Estimation Algorithm Using Radar and Ship Motion Measurements 

      Kjerstad, Øivind Kåre; Løset, Sveinung; Skjetne, Roger; Skarbø, Runa A. (Journal article; Peer reviewed, 2018)
      This paper presents a novel automatic real-time remote sensing algorithm that uses radar images and global positioning satellite system measurements to estimate the ice-drift velocity vector in a region around a free-floating ...
    • An implicit time-stepping scheme and an improved contact model for ice-structure interaction simulations 

      van den Berg, Marnix; Lubbad, Raed; Løset, Sveinung (Journal article; Peer reviewed, 2018)
      This paper presents a novel time-stepping scheme for the modelling of discrete ice-structure interaction. The scheme extends the non-smooth discrete element modelling (NDEM) technique to enable compliant continuous and ...
    • An overview of the Oden Arctic Technology Research Cruise 2015 (OATRC2015) and numerical simulations performed with SAMS driven by data collected during the cruise 

      Lubbad, Raed; Løset, Sveinung; Lu, Wenjun; Tsarau, Andrei; van den Berg, Marnix (Journal article; Peer reviewed, 2018)
      In the autumn of 2015, the Norwegian University of Science and Technology (NTNU) and the Swedish Polar Research Secretariat (SPRS) performed a research cruise named the “Oden Arctic Technology Research Cruise 2015” ...
    • Can a computer see what an ice expert sees? Multilabel ice objects classification with convolutional neural networks 

      Kim, Ekaterina; Dahiya, Gurvinder; Løset, Sveinung; Skjetne, Roger (Journal article; Peer reviewed, 2019)
      Computer-aided scene analysis has drawn much attention, especially in autonomous navigation and advanced navigation assistance systems for surface vessels. In ice-infested waters, multilabel ice object classification and ...
    • Discrete Numerical Modelling of the Interaction between Broken Ice Fields and Structures 

      van den Berg, Marnix (Doctoral theses at NTNU;2019:297, Doctoral thesis, 2019)
    • Dynamic Positioning of Marine Vessels in Ice 

      Kjerstad, Øivind Kåre Kjerstad (Doctoral thesis at NTNU;2016:168, Doctoral thesis, 2016)
      This thesis is a collection of papers focusing on various aspects of dynamic positioning of marine vessels in ice. Most emphasis is put on the dynamic broken, or managed, sea-ice environment where pioneering operations ...
    • Evaluation of load-carrying capacity of a submersible platform subjected to accidental ice impacts 

      Yu, Zhaolong; Amdahl, Jørgen; Løset, Sveinung (Chapter, 2019)
      Floating glacial ice features of various sizes pose great threats to the structural integrity of offshore structures in arctic regions. Potential collisions with large icebergs should generally be avoided through proper ...
    • Experimental studies of wave-ice interactions – insights into data analysis methods and their applications to studying the wave-induced responses of ice cover 

      Li, Hongtao (Doctoral theses at NTNU;2020:228, Doctoral thesis, 2020)
      Studies of wave-ice interactions include field and laboratory experiments, theoretical model developments, the implementation of these theoretical models in simulation tools, and the validation and calibration of these ...
    • Glacial ice impacts: Part II: Damage assessment and ice-structure interactions in accidental limit states (ALS) 

      Yu, Zhaolong; Lu, Wenjun; van den Berg, Marnix; Amdahl, Jørgen; Løset, Sveinung (Peer reviewed; Journal article, 2021)
      Floating glacial ice features of various sizes pose a substantial threat to the structural integrity of offshore structures in ice-prone regions. Relatively small ice feathers, e.g., bergy bits and growlers, are a major ...
    • Ice intelligence retrieval by remote sensing - Possibilities and challenges in an operational setting 

      Skarbø, Runa A.; Løset, Sveinung (Journal article; Peer reviewed, 2017)
      Detecting ice drift velocity when operating offshore in ice-covered waters is crucial during marine operations, as ice actions affect station keeping and ice management. Furthermore, other ice data/intelligence such as ice ...
    • Image Processing for Ice Floe Analyses in Broken-ice Model Testing 

      Zhang, Qin; Skjetne, Roger; Metrikin, Ivan; Løset, Sveinung (Journal article; Peer reviewed, 2015)
      The ice floe shape and size distribution are important ice parameters in ice-structure analyses. Before performing an analysis at full scale, the dynamic positioning (DP) experiments in model ice at the Hamburg Ship Model ...
    • Laboratory experiments on shared-energy collisions between freshwater ice blocks and a floating steel structure 

      Kim, Ekaterina; Storheim, Martin; Amdahl, Jørgen; Løset, Sveinung; von Bock und Polach, Rüdiger Ulrich Franz (Journal article; Peer reviewed, 2017)
      Ship collisions with floating ice in which the ship sustains damage are in the shared-energy regime – both the ice and the ship dissipate energy through inelastic deformations. The physics of these events are rarely studied. ...
    • Marine icing observed on KV Nordkapp during a cold air outbreak with a developing polar low in the Barents sea. 

      Samuelsen, Eirik Mikal; Løset, Sveinung; Edvardsen, Kåre (POAC proceedings;, Journal article, 2015)
    • Medium-scale consolidation of artificial ice ridge – Part I: surface temperature, thickness and mechanical properties 

      Salganik, Evgenii; Høyland, Knut Vilhelm; Shestov, Aleksey; Løset, Sveinung; Heijkoop, Anne-Niekolai (Journal article; Peer reviewed, 2019)
      This paper is describing preparations and methods of medium-scale ridge consolidation experiment and development of ridge and surrounding level ice morphological, thermal, and mechanical characteristics for the experiment, ...
    • Medium-scale consolidation of artificial ice ridge – Part II: Fracture properties investigation by a splitting test 

      Lu, Wenjun; Shestov, Aleksey; Løset, Sveinung; Salganik, Evgenii; Høyland, Knut Vilhelm (Journal article; Peer reviewed, 2019)
      Sea ice’s fracture properties are in general difficult to measure and there is still on-going debate on the proper way to conduct valid measurements. Among many controversy fracture test conditions, the size of the test ...
    • Motion sensing on vessels operating in sea ice: A local monitoring system for transit and stationkeeping operations under the influence of sea ice 

      Heyn, Hans-Martin (Doctoral theses at NTNU;2019: 138, Doctoral thesis, 2019)
      The diminishing sea ice in the Arctic and Antarctic could lead to a higher number of ship operations in these areas, such as cargo transit, resource exploration, fishing, and tourism. However, despite the sea ice reduction, ...
    • Observations and Numerical Simulation of Icebergs in Broken Ice 

      Yulmetov, Renat (Doctoral theses at NTNU;2017:24, Doctoral thesis, 2017)
      Sea ice and icebergs are the major challenges for offshore activities in the Arctic. Design loads for Arctic offshore structures may be significantly reduced if the drift of sea ice and icebergs is possible to forecast ...
    • Parallel channels' fracturing mechanism during ice management operations. Part I: Theory 

      Lu, Wenjun; Lubbad, Raed; Shestov, Aleksey; Løset, Sveinung (Journal article; Peer reviewed, 2018)
      It is frequently observed that long cracks in sea-ice tend to form between parallel channels during ice management operations. The long cracks that develop play an important role in reducing the size of the managed ice ...

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