uniaxial fatigue testing - hollow cylinder
uniaxial fatigue testing - hollow cylinder
(OP)
Hi, I have been talking to someone about uniaxial (tension-tension) loading fatigue testing. They told me that hollow cylinder specimen is a lot harder to work with than solid cylinder specimen in terms of fatigue. I just want to know the reason for that. Is it because the cross section of the hollow cylinder will warp during testing (making it hard to control the load)?





RE: uniaxial fatigue testing - hollow cylinder
RE: uniaxial fatigue testing - hollow cylinder
You can internally thread the hollow specimen and connect it to the load train using an externally threaded rod.
RE: uniaxial fatigue testing - hollow cylinder
RE: uniaxial fatigue testing - hollow cylinder
Standard test specimens are necked down (to make them weaker than the connection area) and the gage length (area of interest) is located far from the holding mechanism (usually threaded or hydraulically clamped).