Railway Track & Structures - February 2008 - (Page 19) Conclusions Clean high-hardness premium rail is resistant to fatigue damage. With good wheel/rail contact conditions and effective rail lubrication, premium rail can provide hundreds of mgt of HAL service without rail grinding. It is difficult, if not impossible, to achieve this in revenue service, where rail grinding is successfully used to improve rail surface conditions and increase rail life. Future testing TTCI is consulting with industry experts to develop a plan for modifying the grind test to continue to provide valuable information to the railroad industry. The FAST program Testing at FAST assesses the effects of operating 315,000pound (39-ton-axle-load) cars. The FAST program has been providing the railroad industry with valuable information on track component performance since 1976, with the operation of 315,000-pound cars beginning in 1988. The Federal Railroad Administration and the Association of American Railroads jointly fund FAST with significant contributions from individual railroads and the supply industry. Reference: 1. Reiff, Richard. June 2007. “Wayside-Based Top of Rail Friction Control: 95 mgt Update.” Technology Digest TD-07- Figure 4 shows high-contact stress profiles. 019. Association of American Railroads, Transportation Technology Center, Inc., Pueblo, Colo. www.rtands.com Railway Track & Structures February 2008 19 http://www.rtands.com
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