3European Committee for Standardization. EN 13749:2005 Railway Applications- Methods of Specifying Structural Requirements of Bogie Frames[ S . London: British Standards Institution, 2005.
4Nishijima Satoshi. Statistical Analysis of Fatigue Test Data I J ], The Society of Materials Science, 1980, 29(16): 24-29.
5European Committee for Standardization. EN 1371D: 2005 Railway Applications-Methods of Specifying Structural Re- quirements of Dogie FramesVS. I.ondon: British Standards Institution, 2005.