Component Lifespan Prediction Using Grain Structure and Stress Maps
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Solution Overview
Problem
Existing methods for monitoring creep in turbine components are inefficient and costly due to the need for precise positioning of strain sensors, leading to inaccuracies and time-consuming deformation analysis.
Innovation Solution
A method and system that utilize image processing and computer analysis to detect grain structures on components, compare them with stress maps, and determine predicted lifespan based on grain structure localization and stress directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If strain sensors are configured on turbine components and analyzed at various intervals, then creep monitoring capability is improved, but positioning precision requirements and analysis time increase
Solution Approach 1:
The patent replaces mechanical strain sensors with X-ray imaging technology to detect creep deformation. Instead of using physical sensors that require precise positioning and manual analysis, the system uses non-contact X-ray imaging to capture and analyze grain structure changes, eliminating the need for sensor positioning and reducing analysis time significantly.
Solution Approach 2:
The patent creates a digital copy of the component's internal grain structure through X-ray imaging. By analyzing this digital representation rather than physical sensors, the system can perform repeated analyses without additional positioning requirements or time investment, as the same X-ray images can be re-analyzed multiple times.
2Measurement precision
If strain sensors are positioned precisely for accurate deformation analysis, then measurement precision is improved, but device complexity and operational difficulty increase
Solution Approach 1:
The patent replaces the complex mechanical sensor positioning system with a fixed X-ray imaging system. The X-ray source and detector are positioned at predetermined locations, eliminating the need for complex sensor positioning mechanisms and reducing operational complexity while maintaining measurement precision through image-based grain structure analysis.
Solution Approach 2:
The patent transitions from one-dimensional strain sensor measurements to three-dimensional grain structure visualization through X-ray imaging. This dimensional change allows comprehensive deformation analysis from multiple angles simultaneously, improving measurement precision without requiring complex sensor positioning in multiple locations.
3Reliability
If strain sensors are used for creep monitoring, then deformation detection capability is improved, but cost and operational complexity increase
Solution Approach 1:
The patent makes the X-ray imaging system multi-functional by using it for both grain structure analysis and creep deformation detection. The same imaging equipment serves multiple purposes: characterizing the initial grain structure, monitoring deformation over time, and predicting component lifespan, thereby reducing the need for multiple specialized devices and lowering overall implementation cost.
Solution Approach 2:
The patent enables the component to monitor its own condition through X-ray imaging of its grain structure. The system uses the component's own microstructure characteristics as the sensing mechanism, eliminating the need for external sensors and reducing implementation costs. The grain structure itself serves as the indicator of deformation, requiring no additional sensing infrastructure.
Data Source
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AI summary
Systems and methods for determining component predicted lifespan are provided. A method includes processing, by a computing system comprising one or more processors, an image of the component to detect a grain structure on the component. The method further includes comparing, by the computing system, the detected grain structure with a stress map of the component. The method further includes determining, by the computing system, based on a localization of the detected grain structure and the stress map, a predicted lifespan of the component.