Relationship between fatigue life in the creep-fatigue region and stress-strain response | Zendy

A. Berkovits | Zendy; S. Nadiv | Zendy

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Relationship between fatigue life in the creep-fatigue region and stress-strain response

Author(s) -

A. Berkovits,

S. Nadiv

Publication year - 1990

Publication title -

experimental mechanics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.815

H-Index - 87

eISSN - 1741-2765

pISSN - 0014-4851

DOI - 10.1007/bf02322827

Subject(s) - materials science , superalloy , solid mechanics , creep , plasticity , stress (linguistics) , strain (injury) , deformation (meteorology) , modulus , composite material , stress–strain curve , structural engineering , microstructure , medicine , philosophy , linguistics , engineering

On the basis of mechanical tests and metallographic studies, strain-range partitioned lives were predicted by introducing stress-strain materials parameters into the universal slopes equation. The method was developed by correlating fatigue-damage mechanisms and deformation mechanisms operating at elevated temperatures. 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 strains, and the elastic modulus. For plasticity/creep interaction conditions (PC and CP) two more pairs of stressstrain parameters must be ascertained.

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