Wire Resistance Surface Anomaly Detection for Turbine Components
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Solution Overview
Problem
Current methods for detecting cracks in turbine components are complex, slow, and require significant skill, making it difficult to efficiently identify surface anomalies before they propagate and cause catastrophic failure.
Innovation Solution
A detection apparatus comprising a wire and sensor system that contacts the surface of a turbine component, measuring changes in resistance to detect surface anomalies such as cracks, which can be manually or robotically applied, and is designed to be simple and cost-effective.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional crack detection methods are used, then detection accuracy can be maintained, but the process becomes complex and requires significant skill
Solution Approach 1:
The patent replaces complex mechanical detection systems with a simple electrical resistance measurement system. A wire is drawn across the component surface and electrical resistance is measured. When the wire contacts a crack, resistance increases, providing a clear electrical signal for crack detection. This substitution of mechanical sensing with electrical measurement dramatically simplifies the detection apparatus and operation.
Solution Approach 2:
The patent utilizes changes in electrical resistance as a parameter to detect cracks. By monitoring resistance variations in the wire as it contacts the component surface, the system translates physical crack presence into measurable electrical parameter changes. This parameter-based detection approach simplifies the overall system complexity while maintaining detection capability.
2Productivity
If conventional crack detection methods are used, then reliable detection can be achieved, but the process becomes slow
Solution Approach 1:
The electrical resistance measurement system provides immediate detection results without the time-consuming mechanical inspection processes. The wire can be rapidly moved across the surface and resistance measurements are obtained instantly, enabling high-speed crack detection that significantly improves productivity compared to conventional methods.
3Ease of operation
If conventional crack detection methods are used, then accurate detection can be achieved, but significant skill and knowledge are required
Solution Approach 1:
The patent replaces complex mechanical sensing requiring skilled interpretation with straightforward electrical resistance measurement. The binary nature of resistance change (normal vs. increased when crack contacted) provides clear, unambiguous signals that are easy to interpret, eliminating the need for extensive operator training and expertise.
Solution Approach 2:
By converting crack detection into a simple electrical parameter measurement, the system transforms a complex diagnostic task into a basic measurement task. The resistance parameter provides direct, quantifiable evidence of crack presence that requires minimal interpretation skill, making the detection process accessible to operators with basic training.
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
Enables efficient detection of cracks and surface anomalies by unskilled workers, reducing the risk of failure and economic losses, as it is relatively inexpensive and can be used frequently, allowing for early treatment or replacement of affected components.
Implementation Method 1
sensing the surface anomaly as an increase in resistance of the wire across the surface
Data Source
AI summary
Processes and systems for detecting surface anomalies in components generally includes contacting a surface of the component with a detection apparatus, wherein the detection apparatus includes at least one post, a wire extending from the post and a sensor in operative communication the wire; and sensing the surface anomaly as an increase in resistance of the wire across the surface.