The failure looks part crystalline and part dull. The part that broke off is a stream divider that changes the flow of ice from an evaporator to a nozzle that pushes the ice through a tube. The part failed after many months of 24/7 operation.
I started a new job two weeks ago and I've been out of school for twenty years and have not used strength of materials knowlegde since. I had a part fail in the lab and I would like to calculate the force that would have been necessary to cause the shear failure. I have simplified the problem...