Uniquely Identifying Additive Parts

BAM
Image: BAM Bundesanstalt für Materialforschung

Secure identification and authentication of components is also gaining importance in additive manufacturing. The Federal Institute for Materials Research and Testing (BAM) is now presenting a patent-pending technology that allows 3D-printed components to be identified using their machine-readable markings and uniquely authenticated using their microstructure. A 3D-printed component has tiny, randomly distributed microstructures within it. These features are non-reproducible and serve as a unique identifier. They are visualized using high-resolution 3D micro-CT. A geometric pattern is calculated from the image data, which is linked to a digital identity (Digital Object Identifier, DOI) and stored in a database. During subsequent verification, the fingerprint can be compared with the stored fingerprint.