A critical review of notch sensitivity in stress-rupture tests

W. F. Brown, Jr., George Sachs
naca-tn-2433
Aug 1951


The English and German literature on notch stress-rupture testing was reviewed and information obtained on: (1) the effect of notching on the rupture strength in general and, in particular, the influence of the unnotch ductility on the notch sensitivity; (2) the effect of chemical composition and heat treatment on the notch stress-rupture characteristics of low-alloy heat-resisting steels; (3) the mechanism of stress-rupture embrittlement and notch sensitivity in these low-alloy steels; and (4) a comparison of the influence of notch geometry on the notch strength in stress-rupture tests and in conventional tensile tests.

An Adobe Acrobat (PDF) file of the entire report:
http://naca.central.cranfield.ac.uk/reports/1951/naca-tn-2433.pdf