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Thermite weld evaluations and developments: railroads, manufacturers and suppliers continually improve infrastructure products and practices for improved performance and reliability. (TTCI R&D).
Railway Track and Structures
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December 1, 2002|
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COPYRIGHT 2002 Simmons-Boardman Publishing Corporation. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group.
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In 1988, at the beginning of heavy-axle-load operations at the Facility for Accelerated Service Testing, Transportation Technology Center, Inc., there was a failure rate of 89 percent with thermite welds after 159 mgt (this failure rate is for service failures only-through weld fractures), while running 315,000-pound cars. Welds were not optimized to perform in this more-demanding, increased axle load environment.
Therefore, weld manufacturers recognized that product improvements were required to obtain acceptable performance under heavier axle loads.
The ...
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