Low cycle fatigue life consumption analysis was carried out in this work. Fatigue\ncycles accumulation method suitable even if engine is not often shut\ndown was applied together with the modified universal sloped method for estimating\nfatigue cycles to failure. Damage summation rule was applied to estimate\nthe fatigue damage accumulated over a given period of engine operation.\nThe concept of fatigue factor which indicates how well engine is operated\nwas introduced to make engine life tracking feasible. The developed fatigue\nlife tracking method was incorporated in PYTHIA, Cranfield University\nin-house software and applied to 8 months of engine operation. The results\nobtained are similar to those of real engine operation. At a set power level, fatigue\nlife decreases with increase in ambient temperature with the magnitude\nof decrease greater at higher power levels. The fatigue life tracking methodology\ndeveloped could serve as a useful tool to engine operators.
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