Remaining life assessment
The real operation life of power equipment rarely coincides with the design one due to the difference between the real and design operation conditions, real and code material properties and design code safety factors. On account of the high price of the equipment itself and the high costs of it dismantling and replacement, the last is advisability only if the operation life is proved exhausted.
ANSYST 98 has developed a methodology for remaining life assessment, on the base of real modes of operation.
The methodology deals two damage mechanisms, which lead to life exhausting – material creep at high temperatures and low cycle fatigue. In case of essential influence of the both mechanisms, the Miner-Robinson rule of linear summation of the damages is applied.
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