Icebreaking Concepts.

• Main Author: Mellor,Malcolm
• Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
• Format: Text
• Language: English
• Published: 1980
• Subjects: Snow; Ice and Permafrost; *FRACTURE(MECHANICS); *SEA ICE; REMOVAL; STRUCTURES; EXPLOSIVES; PROPELLANTS; MELTING; HEAT; COMPRESSED AIR; CUTTING TOOLS; AIR CUSHION VEHICLES; ICEBREAKERS; WATER JETS; Ice; permafrost; Sea ice
• Online Access: http://www.dtic.mil/docs/citations/ADA082175; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA082175

Icebreaking concepts that have potential application in the protection of offshore structures and drillships are reviewed. The concepts dealt with include conventional icebreaking by ships, icebreaking by air cushion vehicles, breaking against fixed structures, mechanical cutting with drag bit tools, blasting by high explosives, blasting with compressed gases or propellants, ice melting, thermal cutting, cutting with lasers, cutting with high pressure water jets, and unproven novel concepts. Special emphasis is given to the specific energy requirements for the various methods. (Author)