A New Modelling of Crack Propagation with Fatigue-Creep-Oxidation Interaction under Non Isothermal Loading
Abstract
This paper deals with the extension of a crack growth model to high temperature complex loading and application to turbine disc. The proposed model is based on an extensive experimental study performed by SNECMA Moteurs on N18 8 from 450 degrees centigrade to 650 degrees centigrade, in isothermal and also in non isothermal condition, which comprises fatigue with or without hold times and special sequence tests representative to the disc in service. The crack growth model is built up in the framework of classical linear elastic fracture mechanics. Time effects at high temperature are traduced by creep-fatigue and oxidation-fatigue interactions. The proposed writing in non isothermal condition is very attractive for easy model identification on a large temperature domain. Model predictions are shown for a large set of experimental data including complex loading in non isothermal condition.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 2003
- Accession Number
- ADP014141
Entities
People
- B. Burgardt
- F. Gallerneau
- P. Kanoute
- S. Kruch
Organizations
- Office National d'Études et de Recherches Aérospatiales