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In-situ Cumulative Damage Assessment in Turbine Wheels
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English
Abstract
This paper presents methodology for continuous assessment of low cycle fatigue and creep/stress-rupture damage in turbine wheels during service. The objective is to keep track of the percentage of useful turbine wheel life that has been expended. This allows preventive engine maintenance to be performed in advance of an actual system malfunction.
Variables to be monitored include exhaust gas temperature versus time, and engine speed. A microprocessor and a non-volatile memory are required for performing calculations and storing data and results.
Authors
Citation
Saith, A., "In-situ Cumulative Damage Assessment in Turbine Wheels," SAE Technical Paper 871785, 1987, https://doi.org/10.4271/871785.Also In
References
- Laflen, J. H. Cook, T. S. “Equivalent Damage - A Critical Assessment” NASA CR-167874 Nov. 1982
- Lewis, B. L. Beckwith, L. R. “A Unified Approach to Turbine Blade Life Prediction” SAE Technical Paper 821439 1982