“…The development and research of the energy method provide a theoretical basis for data fusion methods based on more working condition parameters. Since Inglis [ 19 ] first proposed the study of energy theory, researchers have gradually linked strain energy methods with fatigue damage assessment [ 20 , 21 , 22 , 23 , 24 , 25 ], life prediction [ 26 , 27 , 28 , 29 , 30 ], consideration of notch factors [ 31 , 32 , 33 ], and consideration of stress ratio factors [ 34 , 35 , 36 ].…”