COLD WEATHER TRANSIT TECHNOLOGY PROGRAM. VOLUME 16: MODELING OF ICE FRACTURE

This report is one of a series of reports associated with the U.S. Department of Transportation Urban Mass Transportation Administration's (UMTA) Cold Weather Transit Technology (CWTT) Program that aims to develop new and more effective solutions for cold weather problems experienced by urban mass transportation systems. This report presents analytical and laboratory investigation results on mechanical techniques for removing ice from a rail, namely, the fracture of ice by scrapers and water jets. The investigations emphasize the determination of stress distributions within the ice to be removed and at the substrate-ice interface. In addition to theoretical studies of ice buckling phenomena and ice crack branching at the ice-substrate interface, three special systems were studied: ice debonding from an ideal composite rail; design of new ice scrapers; and hydroblast. The composite rail study supports work in Volume 10 which discusses composite rail designs. A hydroblast system was developed by Vought (Volume 5). The hydroblast investigation supported that effort and agreed with laboratory test data. The P-L ice scraper designs reduce significantly the force required to separate the ice from the substrate. This report contains numerous charts depicting such items as interface stress, dynamic buckling of ice strip, ice scrapers, crack branching, and deicing by hydroblast.

• Corporate Authors:

  Notre Dame University

  College of Engineering
  Notre Dame, Indiana,   United States  46556

  Urban Mass Transportation Administration

  400 7th Street, SW
  Washington, DC  United States  20590
• Authors:
  • Lee, LHN
• Publication Date: 1983-11

Media Info

• Pagination: 170 p.

Subject/Index Terms

• TRT Terms: Bond strength (Materials); Bonding; Cold weather; Deicing; Excavating equipment; Railhead; Railroad tracks; Waterjets
• Identifier Terms: Urban Mass Transportation Act
• Uncontrolled Terms: Scrapers (Construction equipment)
• Old TRIS Terms: Track structures; Umta section 6
• Subject Areas: Maintenance and Preservation; Public Transportation; Railroads;

Filing Info

• Accession Number: 00382605
• Record Type: Publication
• Report/Paper Numbers: UMTIN-06-0009-83-16 Final Rpt.
• Files: TRIS, USDOT
• Created Date: Apr 30 1984 12:00AM