NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Creep-fatigue life prediction for engine hot section materials (isotropic)The objectives of this program are the investigation of fundamental approaches to high temperature crack initiation life prediction, identification of specific modeling strategies and the development of specific models for component relevant loading conditions. A survey of the hot section material/coating systems used throughout the gas turbine industry is included. Two material/coating systems will be identified for the program. The material/coating system designated as the base system shall be used throughout Tasks 1-12. The alternate material/coating system will be used only in Task 12 for further evaluation of the models developed on the base material. In Task II, candidate life prediction approaches will be screened based on a set of criteria that includes experience of the approaches within the literature, correlation with isothermal data generated on the base material, and judgements relative to the applicability of the approach for the complex cycles to be considered in the option program. The two most promising approaches will be identified. Task 3 further evaluates the best approach using additional base material fatigue testing including verification tests. Task 4 consists of technical, schedular, financial and all other reporting requirements in accordance with the Reports of Work clause.
Document ID
19850002666
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Moreno, V.
(Pratt and Whitney Aircraft East Hartford, CT, United States)
Date Acquired
August 12, 2013
Publication Date
October 1, 1982
Publication Information
Publication: NASA. Lewis Research Center Turbine Eng. Hot Sect. Technol. (HOST)
Subject Category
Aircraft Propulsion And Power
Accession Number
85N10974
Distribution Limits
Public
Copyright
Public Use Permitted.
No Preview Available