Patent ID: 11946883
Assignee: UNITED STATES AS REPRESENTED BY THE ADMINISTRATOR OF NASA
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 10:
11. A method for qualifying a radiographic inspection system in a selected set-up to make a crack detectability determination, the method comprising:
determining a predicted contrast-to-noise ratio sensitivity function (CNR SF) for crack detection of a predetermined target flaw size with the radiographic inspection system in the selected set-up;
qualifying an inspection image quality indicator (IQI) for the predetermined target flaw size for use in the radiographic inspection system in the selected set-up, wherein qualifying the inspection IQI comprises determining one or more minimum qualified values for one or more IQI output parameters during an IQI inspection process to provide detection of the predetermined target flaw size, wherein the minimum qualified values are based on the predicted CNR SF; and
performing an inspection process comprising:
selecting the qualified inspection IQI for the predetermined target flaw size;
performing an inspection test on the qualified inspection IQI using the radiographic inspection system in the selected set-up;
determining one or more inspection output parameters; and
verifying that the one or more inspection output parameters meet or exceed the minimum qualified values to qualify the radiographic inspection system in the selected set-up.