Geometric Key Mating Surfaces for Counterfeit Prevention
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Solution Overview
Problem
The risk of counterfeit replacement parts in industries like aviation, where OEMs face challenges in ensuring the integrity and compatibility of components, leading to potential engine failures and legal liabilities, is exacerbated by advancements in additive manufacturing that lower the barrier for unauthorized replication.
Innovation Solution
A method and system that utilize a geometric key to determine complementary mating surface geometries on components, ensuring that only genuine parts can be properly mated, involving the use of additive manufacturing and a component identifier to form unique mating surfaces that can only engage when authentic, thereby preventing unauthorized duplication.
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 components and unauthorized replication increases
Solution Approach 1:
The patent applies asymmetry by creating non-uniform, complex mating surface geometries that are intentionally asymmetric and difficult to replicate. These unique geometries serve as authentication features that are easy to manufacture via additive processes but extremely difficult to copy accurately, thereby maintaining reliability while enabling ease of manufacture.
Solution Approach 2:
The patent transitions from traditional 2D authentication methods to 3D geometric complexity by embedding authentication information in the third dimension through complex mating surface geometries. This dimensional approach allows authentic components to be easily manufactured while making unauthorized replication significantly more difficult.
2Reliability
If traditional manufacturing methods are used for replacement components, then component integrity and OEM control are maintained, but manufacturing cost and time increase
Solution Approach 1:
The patent applies preliminary action by pre-defining unique geometric keys and mating surface configurations during the design phase. These pre-planned geometric features are then directly manufactured using additive processes, eliminating the need for complex post-processing or assembly steps while maintaining integrity and improving productivity.
3Reliability
If complex geometric keys are implemented to prevent counterfeit parts, then component authenticity is ensured, but manufacturing complexity and inspection difficulty increase
Solution Approach 1:
The patent applies self-service by designing mating surfaces where the geometric key authentication is inherently verified through the mating process itself. The components self-authenticate by successfully mating with their complementary counterparts, eliminating the need for separate inspection equipment or complex verification procedures.
Data Source
AI summary
A component pair is provided. The component pairs includes a first component comprising a first mating surface defining a first geometry associated with a geometric key, and a second component comprising a second mating surface defining a second geometry, the second geometry being determined using the geometric key and being complementary to the first geometry. The first component and the second component may be properly mated together only when the first geometry is received by the second geometry.