Fatigue life can be predicted by analyzing the fatigue crack extension . Reasonable maintenance strategies can be made . Economic losses can be avoided because of the unexpected halt . First in this paper two types of crack fronts are studied .

通过对转子疲劳裂纹的扩展分析，可预测裂纹转子的疲劳寿命，制定合理的维护策略，避免因 意外 停机而带来的经济损失。