The creep allowable specified by the customer is the allowable for 1% creep at 100,000 hours. We can calculate both the gross (or net) cross-section stress or the stress due to a local concentration (hole, sharp radius, etc.). I would have thought that the effects of a local stress riser would...
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...
I am working on a project with some fairly exotic materials at high temperatures 9Molybdenum, 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...
My follow up question/comment would be that if using Finite Element Analysis to determine component stress levels, all things considered (accurate representation of hardware, proper boundary conditions, etc.), the model stresses are generally a conservative value to compare to the creep data...
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...
