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Modeling of Crack Growth With Dwell Time for Aero-Engine Spectra Loadings in a Ni-Based Superalloy.
- Source :
-
Journal of Engineering for Gas Turbines & Power . Jan2016, Vol. 138 Issue 1, p1-6. 6p. - Publication Year :
- 2016
-
Abstract
- Testing and simulation of aero-engine spectra with dwell times are reported in this paper. The modeling concept used is built on linear elastic fracture mechanics (LEFM) and provides a history-dependent evolution description of dwell damage and its interaction with cyclic load. The simulations have been carried out for three spectra: (1) cyclic loads, (2) combined sustained load and cyclic loads, and (3) slow load ramps and cyclic loads, all for surface cracks at 550 °C for Inconel 718. All simulations show reasonable good agreement with experimental results. Prediction of multiple tests of several batches is also provided to show statistical scatter. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 07424795
- Volume :
- 138
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Journal of Engineering for Gas Turbines & Power
- Publication Type :
- Academic Journal
- Accession number :
- 113459145
- Full Text :
- https://doi.org/10.1115/1.4031155