The bogie frames mainly fabricate 9㎜ thick rolled steels and sometimes fatigue cracks occur in their welded joints due to inadequate fatigue design and poor weld quality. The objective of this study is to present the systematic procedure of the fati...
The bogie frames mainly fabricate 9㎜ thick rolled steels and sometimes fatigue cracks occur in their welded joints due to inadequate fatigue design and poor weld quality. The objective of this study is to present the systematic procedure of the fatigue durability estimation and the remaining life prediction for diesel locomotive bogie frame weldments. In order for prediction of remaining fatigue lifetime, service stresses were measured at critical points, using strain gages, during field tests under several rail-roading conditions. It was found that the systematic procedure presented in this study could be applied practically to the fatigue analysis for the locomotive bogie frame weldments.