On a simple part where all surface are peened with line of sight from the nozzle to the part surface this would be acceptable in my opinion. However, if there are any features that require ricochet Peening than a fixture representing that technique would be required.
Definition of where intensity is required to be validated is a huge problem. Typical shot peen operators are unaware of the fatigue critical areas where intensity determination should be performed.
Before you do anything I would get approval from your customer.
Walter Beach
Peening Technologies
