Additive Manufacturing Component Authentication via Density Variations
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Solution Overview
Problem
The risk of counterfeit components in the aviation industry poses a significant threat to the integrity and safety of gas turbine engines, as well as the reputation and revenue of original equipment manufacturers (OEMs), due to the ease of reverse engineering and duplication of additively manufactured parts.
Innovation Solution
Incorporating localized density variations into additively manufactured components, which can be used to create a unique component identifier that can be authenticated using scanning devices like x-ray computed tomography, allowing for differentiation between genuine and counterfeit parts by comparing the component identifier to a reference identifier stored in a database.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If additive manufacturing technologies are used to produce replacement parts, then manufacturing cost and accessibility are reduced, but the risk of counterfeit production and reverse engineering increases
Solution Approach 1:
The patent embeds localized density variations in specific identifying regions of the component. These regions contain unique density patterns that differ from the rest of the component, creating localized quality differences that serve as authentication markers while maintaining overall component integrity and functionality.
Solution Approach 2:
The identifying region incorporates asymmetric density variations that are non-uniform and unique to each component. This asymmetry makes reverse engineering and replication difficult, as the specific density pattern cannot be easily reproduced without detection, thereby reducing counterfeit risk while maintaining manufacturing accessibility.
2Measurement precision
If identifying features are added to additively manufactured components, then authentication capability is improved, but manufacturing complexity increases
Solution Approach 1:
The patent combines the identifying region with the component's existing structure during the additive manufacturing process. The density variations are integrated into the component geometry itself rather than being added as separate features, merging authentication functionality with structural design to minimize additional complexity.
Solution Approach 2:
The patent utilizes changes in material density parameters within specific regions to create identifying features. By varying density rather than adding complex geometric features, the authentication capability is enhanced while keeping the component's overall complexity low, as density modifications can be achieved through standard additive manufacturing parameter adjustments.
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
This method effectively authenticates components, reducing the risk of counterfeit parts being passed off as genuine, thereby ensuring the safety and integrity of gas turbine engines and maintaining the OEM's quality control and revenue streams.
Implementation Method 1
obtaining data indicative of the component identifier by interrogating the identifying region of the component using a scanning device
Implementation Method 2
interrogating an identifying region of the component using x-ray computed tomography to generate a map of localized density variations
Data Source
AI summary
A system and method for authenticating an additively manufactured component is provided. The method includes locating an identifying region of the component that includes localized density variations that define a component identifier. The method further includes interrogating the identifying region of the component using a scanning device such as an x-ray computed tomography device to obtain the component identifier. The method further includes obtaining a reference identifier from a database, comparing the component identifier to the reference identifier, and determining that the component is authentic if the component identifier matches the reference identifier.