Embedded Indicia in 3D-Printed Parts for Counterfeit Authentication
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Solution Overview
Problem
Counterfeit parts manufactured using additive technologies are difficult to authenticate, as external indicia can be easily replicated, leading to quality issues and liability concerns, especially in critical applications.
Innovation Solution
Embedding indicia within additively manufactured parts, such as voids or materials of different densities, which can be detected using X-ray scanning or other means, aligning with external indicia for verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If external indicia are used on additively manufactured parts, then authentication is simplified and ease of operation is improved, but counterfeiters can easily replicate these indicia leading to reduced reliability
Solution Approach 1:
The patent extracts the authentication indicia from the external surface and embeds them internally within the part structure. This is achieved by incorporating unique identifiers, voids, or material variations during the additive manufacturing process itself, making the indicia inaccessible for easy replication while maintaining their authentication function.
Solution Approach 2:
The patent implements nested authentication by placing indicia within the internal structure of the part, effectively nesting the authentication feature inside the part itself. This nested approach allows authentication features to be embedded within layers or internal geometries that cannot be accessed or replicated from the external surface.
2Reliability
If embedded indicia are used in additively manufactured parts, then reliability of authentication is improved, but device complexity and manufacturing complexity increase
Solution Approach 1:
The patent applies preliminary action by embedding the authentication indicia during the additive manufacturing process itself, rather than adding them as a separate post-processing step. The indicia are incorporated into the part structure as it is being built layer by layer, utilizing the manufacturing process to create the authentication features simultaneously with the part geometry.
Solution Approach 2:
The patent achieves universality by designing the additive manufacturing process to serve dual functions: creating both the functional part geometry and the embedded authentication indicia. The same manufacturing process that builds the part also embeds the unique identifiers, voids, or material variations, eliminating the need for separate authentication feature creation steps.
3Ease of manufacture
If traditional authentication methods are used, then ease of manufacture is maintained, but the ability to detect counterfeits is reduced
Solution Approach 1:
The patent replaces traditional mechanical or visual authentication methods with non-destructive detection techniques such as X-ray scanning, CT scanning, or acoustic resonance. These detection methods can penetrate the part material to reveal embedded indicia that are invisible from the external surface, providing reliable counterfeit detection without requiring physical contact or destruction of the part.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances authentication by making it difficult for counterfeiters to replicate embedded indicia, ensuring the authenticity and quality of parts, particularly in high-stakes applications like aviation and medical implants.
Implementation Method 1
which can be detected using X-ray scanning or other means
Data Source
AI summary
Methods and apparatus to identify additively manufactured parts are disclosed. An example apparatus includes a body, formed of layers layered substantially parallel to a base layer, composed of a first material having a first density, a first indicium embedded internally in the body as a void, and a second indicium on an external surface of the body, the second indicium aligning with the first indicium.