Room-temperature post-yield creep
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Post-yield creep of smooth specimens at room temperature in nine different metals was studied. Significant creep was observed in eight of the nine metals tested. The average creep strain from all tests was equal to nearly half of the total strain after one hour at constant load. Creep strains of significant magnitude were also found to occur within plastic enclaves of otherwise elastically deformed notched members. The characteristics of localized creep in the notched members strongly parallel the creep behavior observed in unnotched members. The need to consider time-dependent deformation in experimental mechanics is discussed. Post-yield time-dependent deformation as a cause of failure, as a cause of residual-stress relaxation affecting fatigue life, and as a primary feature of inelastic deformation needing to be modeled, are also discussed. © 1982 Society for Experimental Mechanics, Inc.
author list (cited authors)
Jordan, E. H., & Freed, A. D.