Any Source for X-Raying

[Phil C]

I can not think of a standard NDTprocess that would accurately test Damascus barrels. I believe a person with a little work could put together an adapter to test these barrels for cracks or pits that penetrate the walls using an air conditioning ( Freon) servicing cart.
Using rubber plugs adapted to the servicing hoses you could pull a vacuum of 28-29". Even the most minuet leak will drop the vacuum very quickly. If a leak is detected a small test charge of freon could be charged into the barrel being tested, and using a freon leak tester the leak could be pinpointed. Even leaks that are hidden under the ribs would be detected.
I guess a person could also use a fluorescent penetrant inside the plugged barrels and a low pressure applied. This would allow any crack that is not under the ribs to be seen under a black light. Unfortunately if there is a surface crack that has not penetrated completely through these tests would not work.