| Téléchargement | - Voir la version finale : Dual-axis video observations of ice crushing utilizing high-speed video for one perspective (PDF, 863 Kio)
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| Auteur | Rechercher : Gagnon, R. E.; Rechercher : Daley, C. |
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| Format | Texte, Article |
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| Conférence | 18th International Conference on Port and Ocean Engineering Under Arctic Conditions, 26-30 June 2005, Potsdam, New York |
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| Résumé | Rectangular thick sections (1 cm thickness) of lab-grown monocrystalline ice have been confined between two thick Plexiglas plates and crushed at -10º C from one edge face at a rate of 1 cm/s using a transparent Plexiglas platen (1 cm thickness) inserted between the plates. The transparent plates and platen permitted side viewing of the ice behavior during crushing using high-speed video and also a top view of the ice/platen contact zone through the crushing platen using regular video. Zones of intact ice at the ice/platen interface were evident in the visual records and these were shaped by cracks and spalls. The production and flow of liquid in a thin layer at the intact ice/platen interface was also evident. A novel method was used to obtain pressure measurements at the ice/platen interface. Pressure values for the intact ice contact zones were high (at least 20 MPa) and for the crushed ice the pressure varied from low (~1 MPa) to high values (~20 MPa) depending on its thickness over intact ice. Also, wetting from liquid produced at the intact ice/ platen interface probably softened and reduced the pressure in pulverized ice. Features of the load and pressure data are discussed in the context of the visual observations. |
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| Date de publication | 2005 |
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| Dans | |
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| Publications évaluées par des pairs | Oui |
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| Identificateur | IR-2005-02 |
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| Numéro du CNRC | NRC-IOT-6196 |
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| Numéro NPARC | 8894921 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | ca8327a6-70ab-4035-9d59-04b69ca42f20 |
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| Enregistrement créé | 2009-04-22 |
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| Enregistrement modifié | 2020-10-09 |
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