METHOD FOR DETERMINATION OF FATIGUE LIFETIME CONSUMPTION OF AN ENGINE COMPONENT
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United States of America Patent
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Issued Date -
Oct 12, 2017
app pub date -
Apr 7, 2017
filing date -
Apr 8, 2016
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Abstract
A method for determining fatigue lifetime consumption of an engine component, by defining a reference thermal load cycle, the reference thermal load cycle being characterized by a reference load cycle amplitude and a reference load cycle time, and determining a reference load cycle lifetime consumption. The method includes measuring a temperature of the engine component, determining a thermal load cycle based upon the temperature measurement, determining a load cycle amplitude, determining a load cycle time, relating the load cycle time to the reference load cycle time, thereby determining a load cycle time factor, relating the load cycle amplitude to the reference load cycle amplitude, thereby determining a load cycle amplitude factor, combining the load cycle time factor and the load cycle amplitude factor into a combined load cycle factor for determining a load cycle lifetime consumption.
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