In this study, keyhole and smooth specimens, made from a low alloy pressure vessel steel (ASTM A-533 grade B), were subjected to monoaxial fatigue tests. The results show the influence of the stress concentration factor, Kt, on the number of cycles to failure, Nf. Total strain energy per cycle, Δ Wt = Δ Wp + Δ We, was proved to be a good parameter for predicting the life of notched components. Elasto-plastic FEM analysis, utilizing the cyclic and monotonic curve of the material, showed close agreement with the experimental values.

Life prediction of notched components

GIGLIO, MARCO;VERGANI, LAURA MARIA
1995

Abstract

In this study, keyhole and smooth specimens, made from a low alloy pressure vessel steel (ASTM A-533 grade B), were subjected to monoaxial fatigue tests. The results show the influence of the stress concentration factor, Kt, on the number of cycles to failure, Nf. Total strain energy per cycle, Δ Wt = Δ Wp + Δ We, was proved to be a good parameter for predicting the life of notched components. Elasto-plastic FEM analysis, utilizing the cyclic and monotonic curve of the material, showed close agreement with the experimental values.
Failure (mechanical), Fatigue of materials, Fatigue testing, Finite element method, Life prediction, Service life, Strain, Stress analysis, Stresses
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/661310
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