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Ring Expansion Test Set Up
How can a ring of a material be outwardly expanded in the radial direction using a loading mechanism?
I want to set up a ring expansion experiment to study the dynamic tensile failure of materials. Materials of interest would be ceramics and metals.
There already exist methods of expansion by press fitting a ring around a cylinder and putting explosives inside said cylinder and that detonation will expand the ring.
I was thinking of maybe placing a ring around a cylinder made out of rubber or of any other material with a high enough poisson's ratio to laterally expand when struck axially by an external force but I figured that the cylinder would just plastically deform around the ring instead of expanding it.
I am wondering if another set up to uniformly expand a ring exists already or if anyone has any other ideas.
A paper that may be of interest is attached to this post
Thank you!