Taxonomy and Definitions for Terms Related to In Situ Process Monitoring Modality-Capability Index ARP7065

This document describes in situ process monitoring systems of additive manufacturing equipment that assess performance or capability to maintain a stable additive manufacturing process and potentially perform part or all of feed forward control (FFC) for continued operations on an intermittent or sustained basis. It provides a taxonomy with detailed definitions for seven levels of in situ process monitoring systems, ranging from machine input monitoring (Level 0) to in-process flaw detection with correction of such flaw using full process automation (Level 5), in the context of AM machine equipment and their operation in a manufacturing environment.