A method of operating a turbine engine, the turbine engine including a plurality of rotatable components, at least one stationary component, and a creep life management system including a processor, an alarm component, a first portion coupled to the plurality of rotatable components, thereby defining a plurality of first portions, and a second portion coupled to the at least one stationary component, said method comprising:
- rotating the plurality of rotatable components with respect to the at least one stationary component;
- interrogating each respective first portion of the plurality of first portions by the second portion;
- transmitting from each respective first portion of the plurality of first portions a response signal in response to the interrogation by the second portion, wherein each respective response signal is representative of a measurement value of a respective rotatable component of the plurality of rotatable components;
- receiving each respective response signal at the second portion;
- determining, using the processor, a unique creep profile for each respective rotatable component of the plurality of rotatable components that is at least partially based on the respective response signal;
- determining, using the processor, a real-time remaining useful life (RUL) estimation for each respective rotatable component as a function of the response signal transmitted from each respective first portion;
- comparing, using the processor each RUL estimation for each respective rotatable component to each other to determine a prioritized order of maintenance activities for the plurality of rotatable components;
- receiving at the alarm component an alert signal transmitted by the processor, the alert signal related to at least one response signal transmitted from the plurality of sensor apparatuses;
- and
- performing an alert action, by the alarm component, in response to receiving the alert signal from the processor.