Requirement Traceability for Additively Manufactured Photopolymer Parts: Allocation, Verification and Change Impact

Requirement traceability prevents a photopolymer part from being declared acceptable merely because it printed successfully or passed a generic material test. Requirements should be allocated to measurable characteristics at the appropriate level: material, process, geometry, interface, post-processing, environment or finished-part function. This review develops a traceability model in which every requirement has an owner, source, rationale, verification method, acceptance criterion and link to the exact evidence object. Derived requirements are distinguished from customer or regulatory inputs, and conflicts are resolved before production rather than hidden inside test interpretation. Change impact is treated as a graph problem: when material lot rules, printer configuration, geometry, post-cure or test method changes, the affected requirements and evidence should be identifiable. ISO/ASTM 52901 provides a useful purchased-part requirements structure, and ISO/ASTM 52920 places AM process controls inside industrial qualification. The central conclusion is that a requirement is not traceable because it appears in a document; it is traceable when its implementation and verification can be reconstructed for the exact released state.

ER-292 · Version 0.3.