wrote in message
I have some material I need to test for psi. I
need to impact it in a way consistently to show
difference between materials resistance to psi
pressure. The manufacturer I work with
demonstrates this with a center hole punch. But
I'm looking for something a little larger in
impact area and that has some way to set the psi
impact. Any ideas?

Do a web search for 'brinell hardness tester' .
Here's the wiki page on this:

https://en.wikipedia.org/wiki/Brinell_scale