NDT Evaluation Checklist: Written Procedures for Radiographic Inspection Mobile App
Radiography uses radiation energy to detect variations in x-ray attenuation in the object under test and can be used to detect inclusions, voids, cracks, and changes in geometry or material properties.
How does it work?
Two types of radiation energy are typically used by the aviation industry: x-rays which are produced by electronic generators; and, gamma rays which are produced by isotope sources. Radiography can be used to inspect most materials for both surface and internal flaws but orientation of flaw and source is critical. During certification, written procedures should be required, which are applicable to the part or group of parts being tested. During audit/evaluation and surveillance the adherence to the procedures should be verified. Procedures may include the elements in the NDT Evaluation Checklist: Written Procedures for Radiographic Inspection mobile app.