Rotor disks for gas turbines are heavy components and are usually designed following a safe-life approach, where the low-cycle fatigue analysis is carried out referring to design life curves with suitable probabilistic margins. However, in the case of such a heavy component there is the possibility of rare occurrence of undetected defects or, better, the need to identify the defect acceptability for the different rotor regions (considering stress, temperature, mission profile). In order to carry out such calculations for a turbine rotor disk a software named {AStrID} (Assessment of the Structural Integrity of Disks) has been developed in close cooperation between Politecnico di Milano and Ansaldo Energia (AEN). This paper summarizes its background and some of the relevant features.
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机译：用于燃气轮机的转子盘是重的部件，并且通常在安全生命方法之后设计，其中对具有合适的概率边缘的设计寿命曲线进行了低循环疲劳分析。然而，在这种重的成分的情况下，有可能罕见的未检测到的缺陷或更好地识别不同转子区域的缺陷可接受性（考虑应力，温度，任务轮廓）。为了在PoliteCnico di Milano和Ansaldo Energia（AEN）之间的密切合作中开发了针对名为{Astrid}（对盘结构完整性的评估）的软件进行了这种计算。本文总结了其背景和一些相关特征。
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