Abstract Due to both wave and wind fluctuations, the steel foundations of offshore wind turbines are highly submitted to fatigue. To date, current methods of fatigue design proposed in the regulations are not devoted to structural optimization and to the consideration of time-variant hazards. We propose hence an incremental two-scale model of damage in order to follow the time evolution of the damage. This temporal evolution allows the updating of model parameters using records from Structural Health Monitoring. In this paper, we focus on Bayesian updating of damage parameters and sensitivity analysis of damage assessment to material parameters.

中文翻译：

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海上钢制风力涡轮机的两尺度概率瞬态疲劳模型

摘要 由于波浪和风的波动，海上风力发电机组的钢基础极易疲劳。迄今为止，法规中提出的当前疲劳设计方法并未专门用于结构优化和时变危险的考虑。因此，我们提出了一个增量的两尺度损伤模型，以便跟踪损伤的时间演变。这种时间演变允许使用来自结构健康监测的记录更新模型参数。在本文中，我们重点研究了损伤参数的贝叶斯更新和损伤评估对材料参数的敏感性分析。