Fatigue life evaluation system and method for fastening bolt

The invention discloses a system and method for evaluating the fatigue life of a fastening bolt, and particularly relates to the technical field of mechanical engineering, and the system comprises a data collection module, a data processing module, a fatigue life prediction module, a model prediction precision evaluation module, a fatigue life evaluation module and a model prediction precision correction module. A data processing module analyzes the surface image of the bolt, calculates related parameters according to the pre-tightening force and the stress, and provides data support for fatigue life prediction; predicting the fatigue life of the bolt through a fatigue life prediction module; the accuracy of a prediction result is evaluated through a model prediction precision evaluation module; through a fatigue life evaluation module, the fatigue life of the bolt is evaluated according to a preset threshold value, and corresponding measures are taken to ensure safe operation of equipment; and through the mo