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The Application of Strainrange Partitioning Method to Multiaxial Creep-Fatigue InteractionThe method of strain range partitioning was applied to a series of torsional fatigue tests conducted on tubular 304 stainless steel specimens at 1200 F (649 C). Creep strain was superimposed on cycling strain, and the resulting strain range was partitioned into four components: (1) completely reversed plastic shear strain, (2) plastic shear strain followed by creep strain, (3) creep strain followed by plastic strain, and (4) completely reversed creep strain. Each strain component was related to the cyclic life of the material. The experimental procedure used to achieve strain partitioning is described, and the torsional test results are compared to those obtained from axial tests. The damaging effects of the individual strain components were expressed by a linear life fraction rule.
Document ID
19790002323
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Zamrik, S. Y.
(Pennsylvania State Univ. University Park, PA, United States)
Date Acquired
August 10, 2013
Publication Date
August 1, 1978
Publication Information
Publication: AGARD Characterization of Low Cycle High Temp. Fatigue by the Strainrange Partitioning Method
Subject Category
Structural Mechanics
Accession Number
79N10494
Funding Number(s)
CONTRACT_GRANT: NGR-39-009-034
Distribution Limits
Public
Copyright
Other
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