New model predicts safe operation of high-speed trains with impact defects
The researchers studied how different defects on train axles can affect their fatigue limit. They created defects on axle samples, analyzed the stress in those areas, and conducted fatigue tests. By fitting curves to the test results, they developed a mathematical model to predict the fatigue limit of axles with defects. The model was accurate in predicting the fatigue limit. They also used a theoretical model to assess the safety of axles based on defect shape and depth.
