Coating Microstructure Determination via Polarized Electromagnetic Signals
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Solution Overview
Problem
Traditional methods for inspecting microstructures of coatings on turbine engine components are destructive, leading to part loss and lengthy processing times, whereas non-destructive methods require physical movement of components or electromagnetic sources.
Innovation Solution
A method involving the projection of electromagnetic signals at different planes of polarization onto a coating, with time delays calculated from reflected signals to determine microstructure without moving the component or source, allowing for non-destructive and contactless analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional destructive analysis methods are used to inspect coating microstructure, then measurement precision can be achieved, but productivity is reduced due to lengthy processing times and part loss
Solution Approach 1:
The patent replaces destructive mechanical inspection methods with non-destructive electromagnetic wave-based inspection. The system uses electromagnetic waves to probe the coating microstructure, obtaining information about columnar grain structures without physically damaging the component, thereby maintaining measurement precision while dramatically improving productivity
Solution Approach 2:
The patent introduces electromagnetic waves as an intermediary medium to interact with the coating microstructure. The electromagnetic waves penetrate the coating and interact with the microstructure, allowing indirect observation of microstructural features without direct mechanical contact or destruction of the sample
2Productivity
If non-destructive electromagnetic pulse methods are used, then productivity is improved by avoiding part destruction, but device complexity increases due to requirements for physical movement of components or sources
Solution Approach 1:
The patent replaces mechanical movement systems with a stationary electromagnetic inspection system. Instead of requiring physical movement of components or electromagnetic sources as in traditional non-destructive methods, this system uses a fixed configuration that emits electromagnetic waves and detects reflections, significantly reducing device complexity while maintaining high productivity
Solution Approach 2:
The patent segments the inspection process into distinct electromagnetic interaction components: wave emission, microstructure interaction, reflection detection, and data processing. This segmentation allows each component to be optimized independently, reducing overall system complexity while maintaining inspection efficiency
3Measurement precision
If destructive analysis with cutting and polishing is used, then measurement precision is achieved, but loss of time occurs due to 24-48 hour processing requirements
Solution Approach 1:
The patent substitutes mechanical cutting and polishing operations with electromagnetic wave-based microstructure probing. The electromagnetic waves can penetrate the coating and provide microstructural information without any physical contact or preparation time, reducing inspection cycle time from 24-48 hours to near-real-time measurements while preserving measurement precision
Solution Approach 2:
The patent performs the microstructure inspection action immediately on the as-deposited coating without requiring preliminary cutting or polishing steps. The electromagnetic waves can directly interact with the coating microstructure in its original state, eliminating time-consuming preparation operations while maintaining the ability to accurately determine microstructural features
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 approach enables accurate, rapid determination of coating microstructure, reducing inspection time from 24-48 hours to 10-20 minutes and allowing for multiple component inspections without part destruction.
Implementation Method 1
polarizing the supplied electromagnetic signal to define a first polarized signal having a first plane of polarization
Implementation Method 2
a portion of the first polarized signal reflected from a surface of the coating, and a portion of the first polarized signal reflected at an interface of a substrate of the component and refracted by the coating
Implementation Method 3
a portion of the first polarized signal reflected at an interface of a substrate of the component and refracted by the coating
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A method (500, 600) for determining (510, 611) a microstructure of a coating (120) on a component (116). The method (500, 600) includes projecting (502, 602) at least a first electromagnetic signal in a first plane of polarization onto the coating (120) and a second electromagnetic signal in a second plane of polarization is onto the coating (120). A first and second time delay (406, 416, 430) can be determined. The microstructure of the coating (120) is based on a difference between at least two time delays (406, 416, 430).