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Relationship between fatigue life in the creep-fatigue region and stress-strain responseOn the basis of mechanical tests and metallographic studies, strainrange partitioned lives were predicted by introducing stress-strain materials parameters into the Universal Slopes Equation. This was the result of correlating fatigue damage mechanisms and deformation mechanisms operating at elevated temperatures on the basis of observed mechanical and microstructural behavior. Correlation between high temperature fatigue and stress strain properties for nickel base superalloys and stainless steel substantiated the method. Parameters which must be evaluated for PP- and CC- life are the maximum stress achievable under entirely plastic and creep conditions respectively and corresponding inelastic strains, and the two more pairs of stress strain parameters must be ascertained.
Document ID
19900033006
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Berkovits, A.
(NASA Lewis Research Center Cleveland, OH, United States)
Nadiv, S.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1988
Subject Category
Structural Mechanics
Meeting Information
Meeting: International Congress on Experimental Mechanics
Location: Portland, OR
Country: United States
Start Date: June 6, 1988
End Date: June 10, 1988
Sponsors: Korean Society of Mechanical Engineers, SEM, Japan Society of Mechanical Engineers
Accession Number
90A20061
Distribution Limits
Public
Copyright
Other

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