De-Icing Using Lasers
The feasibility of employing a laser to de-ice remote surfaces was investigated. A Nd:Glass laser, wavelength 1.06 micrometers, and a Ruby laser, wavelength 6943 A were used to irradiate ice grown upon six types of substrates -- asphalt, brass, concrete, aluminum, steel, and stone. It was found that...
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ftdtic:ADA026637 2023-05-15T16:37:19+02:00 De-Icing Using Lasers Lane,Jean W. Marshall,Stephen J. COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H 1976-04 text/html http://www.dtic.mil/docs/citations/ADA026637 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA026637 en eng http://www.dtic.mil/docs/citations/ADA026637 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Snow Ice and Permafrost Lasers and Masers Structural Engineering and Building Technology *LASERS *DEICING SYSTEMS OPTICAL EQUIPMENT RADIATION LABORATORY TESTS PERFORMANCE TESTS INTERFACES ASPHALT CONCRETE STEEL FRACTURE(MECHANICS) INFRARED LASERS FEASIBILITY STUDIES ALUMINUM HEATING CONSTRUCTION MATERIALS NEODYMIUM LASERS RUBY LASERS BRASS Neodymium glass lasers Visible lasers Laser heating Building stones Text 1976 ftdtic 2016-02-20T11:11:52Z The feasibility of employing a laser to de-ice remote surfaces was investigated. A Nd:Glass laser, wavelength 1.06 micrometers, and a Ruby laser, wavelength 6943 A were used to irradiate ice grown upon six types of substrates -- asphalt, brass, concrete, aluminum, steel, and stone. It was found that a single pulse, delivered to the interface between the ice and its substrate at a power density of 10 to the 8th power to 10 to the 9th power watts/sq cm, produced fractures 0.1 to 2 cm in diameter for all substrates. If the initial fracture could be propagated by suitable scanning of the optical beam over the interface, the ice could be disrupted and thus removed from the substrate. The technique could also be a useful adjunct to de-icing methods that depend upon the existence of an initial crack. The process of producing the initial fracture was found to be limited by the thickness of the ice, the bubble content of the ice, and the focusing system. Text Ice permafrost Defense Technical Information Center: DTIC Technical Reports database |
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Open Polar |
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Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Snow Ice and Permafrost Lasers and Masers Structural Engineering and Building Technology *LASERS *DEICING SYSTEMS OPTICAL EQUIPMENT RADIATION LABORATORY TESTS PERFORMANCE TESTS INTERFACES ASPHALT CONCRETE STEEL FRACTURE(MECHANICS) INFRARED LASERS FEASIBILITY STUDIES ALUMINUM HEATING CONSTRUCTION MATERIALS NEODYMIUM LASERS RUBY LASERS BRASS Neodymium glass lasers Visible lasers Laser heating Building stones |
spellingShingle |
Snow Ice and Permafrost Lasers and Masers Structural Engineering and Building Technology *LASERS *DEICING SYSTEMS OPTICAL EQUIPMENT RADIATION LABORATORY TESTS PERFORMANCE TESTS INTERFACES ASPHALT CONCRETE STEEL FRACTURE(MECHANICS) INFRARED LASERS FEASIBILITY STUDIES ALUMINUM HEATING CONSTRUCTION MATERIALS NEODYMIUM LASERS RUBY LASERS BRASS Neodymium glass lasers Visible lasers Laser heating Building stones Lane,Jean W. Marshall,Stephen J. De-Icing Using Lasers |
topic_facet |
Snow Ice and Permafrost Lasers and Masers Structural Engineering and Building Technology *LASERS *DEICING SYSTEMS OPTICAL EQUIPMENT RADIATION LABORATORY TESTS PERFORMANCE TESTS INTERFACES ASPHALT CONCRETE STEEL FRACTURE(MECHANICS) INFRARED LASERS FEASIBILITY STUDIES ALUMINUM HEATING CONSTRUCTION MATERIALS NEODYMIUM LASERS RUBY LASERS BRASS Neodymium glass lasers Visible lasers Laser heating Building stones |
description |
The feasibility of employing a laser to de-ice remote surfaces was investigated. A Nd:Glass laser, wavelength 1.06 micrometers, and a Ruby laser, wavelength 6943 A were used to irradiate ice grown upon six types of substrates -- asphalt, brass, concrete, aluminum, steel, and stone. It was found that a single pulse, delivered to the interface between the ice and its substrate at a power density of 10 to the 8th power to 10 to the 9th power watts/sq cm, produced fractures 0.1 to 2 cm in diameter for all substrates. If the initial fracture could be propagated by suitable scanning of the optical beam over the interface, the ice could be disrupted and thus removed from the substrate. The technique could also be a useful adjunct to de-icing methods that depend upon the existence of an initial crack. The process of producing the initial fracture was found to be limited by the thickness of the ice, the bubble content of the ice, and the focusing system. |
author2 |
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H |
format |
Text |
author |
Lane,Jean W. Marshall,Stephen J. |
author_facet |
Lane,Jean W. Marshall,Stephen J. |
author_sort |
Lane,Jean W. |
title |
De-Icing Using Lasers |
title_short |
De-Icing Using Lasers |
title_full |
De-Icing Using Lasers |
title_fullStr |
De-Icing Using Lasers |
title_full_unstemmed |
De-Icing Using Lasers |
title_sort |
de-icing using lasers |
publishDate |
1976 |
url |
http://www.dtic.mil/docs/citations/ADA026637 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA026637 |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA026637 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
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1766027610408615936 |