Aerospace series - Metallic materials - Test methods - Part 21: Radiographic testing of castings

This document establishes specific examination procedures for the non-destructive testing of cast metallic components within the aerospace sector, focusing exclusively on radiographic inspection techniques. It provides detailed methodologies for evaluating internal defects and structural integrity of castings through radiation analysis, ensuring consistent application across manufacturing and maintenance processes. The content outlines technical requirements for equipment, exposure parameters, film or digital detector selection, and evaluation criteria to assess defect severity and classification. Particular attention is given to image quality control and interpretation guidelines to support reliable decision-making regarding component acceptance or rejection. By defining standardized practices, it facilitates uniform quality assessment in the production and servicing of aerospace hardware, enabling manufacturers and operators to verify material properties and detect anomalies without compromising the component. This technical specification serves as a reference for implementing precise radiographic protocols tailored to the rigorous demands of aviation and space applications, promoting safety and reliability through systematic examination of cast structures.