About this Abstract |
Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
Symposium
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2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
Presentation Title |
Anticounterfeiting Signatures for Additively Manufactured Parts via Electromechanical Impedance Measurements |
Author(s) |
Nathan Raeker-Jordan, Christopher Williams |
On-Site Speaker (Planned) |
Nathan Raeker-Jordan |
Abstract Scope |
Additive manufacturing (AM) is increasingly used to create complex end-use parts for critical systems across a distributed supply chain. However, these parts are at risk of counterfeiting by a capable attacker, either by using stolen digital designs or reverse engineering. Extrinsic part identification such as barcodes and ID numbers placed onto part surfaces can similarly be defeated. In this work, the authors explore the use of electromechanical impedance (EMI) measurements as a physically unclonable function for identifying printed parts via an attached piezoelectric sensor-actuator. As the EMI response is intrinsic to the geometry and material properties of a part, the natural variation in AM processes causes distinct EMI responses for nominally identical parts. This ability for EMI responses to serve as a “digital fingerprint” is evaluated across several AM processes, and is shown to be capable of differentiating between unique parts produced using binder jetting, material jetting, and material extrusion. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |