Test Strip and Method for Confirming Shot Peening Coverage

Author:  Jack Champaigne
Source:  US Patent 6,568,239 B1
Doc ID:  2003003
Year of Publication:  2003
Abstract:  
Shot peening coverage is confirmed by mounting a test strip having surface irregularities of graduated depth on a surface of a component undergoing peening for which peening coverage is to be confirmed. The component, with the test strip attached thereto, is exposed to the shot stream under production conditions. The strip, which is selected according to a procedure described herein such that some, but not all, of the surface irregularities are removed when proper peening coverage is attained, is then removed and examined.