They are not able to preload it in service which is why they want to test it. I have proposed to design a 4 point bending test rig and test the connection in this, but unfortunately they do not have a budget for that.
They do have locking mechansim which prevents the collar from unscrewing but...
Hi Guys,
Our customer has requested us to perform a resonance fatigue test on a non-preloaded threaded collar type connection. My conecern is that if we do not preload the connection in excess of the cyclic fatigue loads it will fret, rattle, make a great noise and heat up very quickly (and...
