Based on the structure feature of wide chord blade of actual high bypass ratio turbo-fan engine

the design and manufacturing of hollow fan blade specimen were finished

followed by high cycle fatigue experimental design and emphasized verification of the fatigue endurance of hollow structure. The experiment results indicate that the design of fixture and fan blade specimen could accomplish the high cycle fatigue experiment on hollow fan blade. Meanwhile

the high cycle fatigue strength of the hollow fan blade which lies between 370MPa and 400MPa for 1×107 cycle could fulfill the high cycle fatigue design requirement that the hollow fan blade should have high cycle fatigue strength no less than 324MPa under maximum operating condition. However

due to the lack of sufficient quantity of specimens

high cycle fatigue data were only derived under limited stress levels. Further research could be carried out similarly with increased quantity to estimate the fatigue endurance and then construct the stress-fatigue curve

providing prime data base for engineering research.