材料疲劳性能预测与疲劳延寿是关键构件长期服役可靠性的重要保障。四川大学王清远团队及其合作单位开展的“超长寿命疲劳裂纹萌生机理与寿命预测”项目，建立了具有自主知识产权的超声频率疲劳加速实验方法及其系统，提出了超长寿命疲劳裂纹内部萌生的破坏机制，建立了超长寿命疲劳总寿命和裂纹萌生寿命预测模型。
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