The paper describes the feasibility of the new model with the calculation cases and demonstrates the influence of inspection and repair to the dynamic fatigue reliability of structures.

结合算例阐述了本文提出方法的可行性，验证了检测、维修结果对结构动态疲劳可靠性的影响。

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In this paper, the reliability of cranks was analyzed with static, dynamic reliability theories separately. It was derived that there was a safety working time for cranks in point of fatigue strength.

以通用曲柄压力机的曲轴作为分析研究对象，应用可靠性理论对其静态、动态可靠性做了分析描述，从疲劳强度的观点给出了曲轴的安全工作区。

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