The use of numerical models to design fatigue crack growth tests for a railroad tank car spectrum was discussed. A fracture mechanics parameter, H, was proposed to relate the crack-tip driving force under a railroad tank car spectrum to the resulting crack growth rates. This allowed the direct application of fatigue crack growth rate data resulting from laboratory tests to models for crack growth under railroad service conditions. The results show that tests designed to determine fatigue crack growth rates for loaded vertical coupler force (LVCF) spectrum must be considered and that crack closure based models for are a valuable tool for designing such tests for fatigue crack growth.
|Original language||English (US)|
|Number of pages||17|
|Journal||ASTM Special Technical Publication|
|Publication status||Published - Jan 1 2002|
|Event||Applications of Automation Technology in Fatigue and Fracture Testing and Analysis: Fourth Volume - Orlando, FL, United States|
Duration: Nov 15 2000 → Nov 15 2000
All Science Journal Classification (ASJC) codes