Broken Ice Photogrammetry in Model-Scale Experiments with Sloped Structure
Testing a physical model of an ice-resistant marine structure in an ice tank is one of the methods used for design validation. For a stationary structure design, not only is the possible global ice load of interest but also the processes of creation and evolution of ice rubble in front of the contac...
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ftdoajarticles:oai:doaj.org/article:16a35d9113534b6699f6b3400105834d 2023-05-15T16:41:30+02:00 Broken Ice Photogrammetry in Model-Scale Experiments with Sloped Structure Petr Zvyagin Ilia Pavlov Tatiana Zvyagina 2022-10-01T00:00:00Z https://doi.org/10.3390/jmse10111590 https://doaj.org/article/16a35d9113534b6699f6b3400105834d EN eng MDPI AG https://www.mdpi.com/2077-1312/10/11/1590 https://doaj.org/toc/2077-1312 doi:10.3390/jmse10111590 2077-1312 https://doaj.org/article/16a35d9113534b6699f6b3400105834d Journal of Marine Science and Engineering, Vol 10, Iss 1590, p 1590 (2022) ice model ice tank ice failure photogrammetry inclined structure ice load Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 article 2022 ftdoajarticles https://doi.org/10.3390/jmse10111590 2022-12-30T22:37:31Z Testing a physical model of an ice-resistant marine structure in an ice tank is one of the methods used for design validation. For a stationary structure design, not only is the possible global ice load of interest but also the processes of creation and evolution of ice rubble in front of the contacting surface. While the load registering technique in model-scale experiments is very well-developed, the photogrammetric analysis of broken ice morphometry and locomotion is not. The photographs taken to illustrate the breaking process do not usually accompany the information necessary for the photogrammetric reconstruction of the scene. This paper outlines a systematic approach to the photogrammetric analysis of the scenes in model-scale conditions. Using this approach, the broken ice dimensions were measured in seven model-scale experiments for which the model of a sloped marine structure was reconstructed. In these experiments, a 700 mm wide slope with an inclination angle of 53° caused an upward flexural failure of the model’s granular ice. Reference global load histories for these experiments are provided. For the first contact episodes, the successful reconstruction of the broken ice mosaic in the polynya showed the insignificant contribution of compressive failure. In continual ice–structure interaction, the morphometry of the ice blocks visible on the slope of the rubble pile and on the surface of the surrounding ice sheet was retrieved from orthorectified video frames. The results were compared with the after-test nadir drone view of the polynya. The error in estimating the top-side area and the maximum linear dimension of the ice block fell into the interval of 0–10%. The morphometric information of the broken ice floes obtained in ice tank experiments with physical models can be used for the improvement of the mechanical models of ice fracture and failure against inclined offshore ice-resistant structures. Article in Journal/Newspaper Ice Sheet Directory of Open Access Journals: DOAJ Articles Journal of Marine Science and Engineering 10 11 1590 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
ice model ice tank ice failure photogrammetry inclined structure ice load Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 |
spellingShingle |
ice model ice tank ice failure photogrammetry inclined structure ice load Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 Petr Zvyagin Ilia Pavlov Tatiana Zvyagina Broken Ice Photogrammetry in Model-Scale Experiments with Sloped Structure |
topic_facet |
ice model ice tank ice failure photogrammetry inclined structure ice load Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 |
description |
Testing a physical model of an ice-resistant marine structure in an ice tank is one of the methods used for design validation. For a stationary structure design, not only is the possible global ice load of interest but also the processes of creation and evolution of ice rubble in front of the contacting surface. While the load registering technique in model-scale experiments is very well-developed, the photogrammetric analysis of broken ice morphometry and locomotion is not. The photographs taken to illustrate the breaking process do not usually accompany the information necessary for the photogrammetric reconstruction of the scene. This paper outlines a systematic approach to the photogrammetric analysis of the scenes in model-scale conditions. Using this approach, the broken ice dimensions were measured in seven model-scale experiments for which the model of a sloped marine structure was reconstructed. In these experiments, a 700 mm wide slope with an inclination angle of 53° caused an upward flexural failure of the model’s granular ice. Reference global load histories for these experiments are provided. For the first contact episodes, the successful reconstruction of the broken ice mosaic in the polynya showed the insignificant contribution of compressive failure. In continual ice–structure interaction, the morphometry of the ice blocks visible on the slope of the rubble pile and on the surface of the surrounding ice sheet was retrieved from orthorectified video frames. The results were compared with the after-test nadir drone view of the polynya. The error in estimating the top-side area and the maximum linear dimension of the ice block fell into the interval of 0–10%. The morphometric information of the broken ice floes obtained in ice tank experiments with physical models can be used for the improvement of the mechanical models of ice fracture and failure against inclined offshore ice-resistant structures. |
format |
Article in Journal/Newspaper |
author |
Petr Zvyagin Ilia Pavlov Tatiana Zvyagina |
author_facet |
Petr Zvyagin Ilia Pavlov Tatiana Zvyagina |
author_sort |
Petr Zvyagin |
title |
Broken Ice Photogrammetry in Model-Scale Experiments with Sloped Structure |
title_short |
Broken Ice Photogrammetry in Model-Scale Experiments with Sloped Structure |
title_full |
Broken Ice Photogrammetry in Model-Scale Experiments with Sloped Structure |
title_fullStr |
Broken Ice Photogrammetry in Model-Scale Experiments with Sloped Structure |
title_full_unstemmed |
Broken Ice Photogrammetry in Model-Scale Experiments with Sloped Structure |
title_sort |
broken ice photogrammetry in model-scale experiments with sloped structure |
publisher |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/jmse10111590 https://doaj.org/article/16a35d9113534b6699f6b3400105834d |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Journal of Marine Science and Engineering, Vol 10, Iss 1590, p 1590 (2022) |
op_relation |
https://www.mdpi.com/2077-1312/10/11/1590 https://doaj.org/toc/2077-1312 doi:10.3390/jmse10111590 2077-1312 https://doaj.org/article/16a35d9113534b6699f6b3400105834d |
op_doi |
https://doi.org/10.3390/jmse10111590 |
container_title |
Journal of Marine Science and Engineering |
container_volume |
10 |
container_issue |
11 |
container_start_page |
1590 |
_version_ |
1766031947260231680 |