creep and stress concentration factors

huangyhg

creep and stress concentration factors
i am working on a project with some fairly exotic materials at high temperatures (molybdenum, hastelloy, inconel 718, all at about 800 degrees c). we have been able to get some creep data for these materials, but the data does not seem to distinguish between notched and unnotched specimens. the basic question that i have is: when calculating a stress to compare to creep allowables, do you need to calculate the notched stress (at a hole in a plate for example), or does the creep allowable pertain to the far field (gross cross-section) stress? any insight would be greatly appreciated.