Life Cycle Management and Maintenance (LCMM):
The XactLIFE-LCMM system is a digital twin of a gas turbine that provides the predictive maintenance capability for making routine Life Cycle Management and Maintenance decisions for a specific engine configuration including cyclic as well as steady state usage based parts life tracking of all critical parts within a known engine operating envelope. It is possible to perform near real-time prognostics with the aim of predicting the residual life of the individual parts as a function of usage and their future in-service behavior as a function of different usage scenarios. Engine operational history based aircraft fleet missions are used to define the engine operational envelope and to predict the engine performance through off design engine modeling and advanced CFD and FEA tools are further used to upfront calculate the temperature, stress and strain distributions for the parts of interest over these operating points. These data are stored in advanced databases using optimized database architecture. The load filtering and damage analysis are conducted on-line using the sequence and intensities of the actual usage loads to compute the accumulated damage, part lives and their reliability. Predictive maintenance further provides the capability to perform comparison of the actual usage based predicted residual life with the OEM recommended preventive maintenance intervals including cost implications. Parts life tracking system uses these data to enable the tracking of the individual parts with their appropriate identification numbers, updated usage, remaining life as well as criticality.
Engineering Services (ES):
The XactLIFE-ES system provides greater exploratory capabilities to users to assess the impact of changes in the part material and engine operational role on the performance and design life of the individual parts in a specific engine. Other engineering design changes such as any changes in the part geometry and cooling schemes on the performance and life of the individual parts can also be investigated with some assistance from the LPTi engineering team. The embedded third party CFD and FEA solvers in the system allow the users to conduct numerical computation of the usage based temperature, stress and strain of critical engine parts. This information in conjunction with the material physics based damage models is used to accurately predict the design lives or remaining useful lives of these parts. A Mission profile analyser is also included to identify the steady-state creep and cyclic fatigue loads based on engine shaft speed and the gas path temperature fluctuations. This analyzer filters the engine usage data into discrete engine operating points and the type of loads prevalent at each engine operational point for further processing within the XactLIFE-ES system.