HOTPITS: The DARWIN Approach to Assessing Risk of Hot Corrosion Induced Fracture in Gas Turbine Components

HOTPITS is a set of physics-based software tools for treating the degradation processes in Type II hot corrosion, including the initiation, growth, and coalescence of multiple pits, and the transition of pits to fatigue cracks. The HOTPITS methodology has been implemented in DARWIN® to provide a probabilistic capability for assessing the risk of hot corrosion-induced fracture in gas turbine components.

To illustrate model capabilities, two benchmark computations were performed to simulate the initiation, growth, and coalescence of multiple pits, and their transition to a dominant Mode I crack and to assess the risk of hot corrosion–induced fracture.

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