Eddy Current Probe Integrity Monitoring via Test Loop
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing eddy current inspection systems face limitations in monitoring the integrity of the entire acquisition chain, particularly for complex multi-element probes, requiring dedicated electronics and multiple steps, which are not suitable for fast and inexpensive monitoring between consecutive inspections.
Innovation Solution
Incorporating a remotely controllable conductive test loop within the eddy current probe that induces a difference of potential, allowing for rapid assessment of system integrity by comparing reference signals with current probe check evaluations, and displaying results on an impedance plane to detect faults in individual channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If dedicated probe checking electronics and multiple steps are used to monitor eddy current system integrity, then measurement precision is improved, but device complexity and loss of time increase
Solution Approach 1:
The patent applies multi-functionality by enabling the eddy current probe to serve dual purposes: both inspection and self-diagnosis. The probe's test loop can be activated to generate eddy currents that traverse the entire acquisition chain, allowing the same hardware used for inspection to also perform integrity checking without requiring separate dedicated electronics.
Solution Approach 2:
The patent merges the inspection function and integrity monitoring function into a single unified system. By combining the test loop activation mechanism with the existing eddy current acquisition chain, the system eliminates the need for separate checking electronics and integrates diagnostic capability directly into the inspection workflow.
2Reliability
If comprehensive system acquisition chain checking is performed, then reliability is improved, but loss of time increases
Solution Approach 1:
The patent implements periodic action by enabling rapid integrity checks to be performed between consecutive inspections. The test loop can be activated periodically to verify system functionality without requiring extensive downtime, allowing for continuous monitoring that fits within the operational schedule between inspections.
Solution Approach 2:
The patent applies preliminary action by performing integrity checks before actual inspection operations. By activating the test loop and verifying system functionality in advance, the system ensures that the acquisition chain is fully functional before inspecting components, preventing time-consuming interruptions during inspection due to system failures.
3Adaptability or versatility
If complex multi-element probe designs are used, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the multi-element probe into individual testable channels. Each channel can be independently activated and tested through the test loop, allowing the complex multi-element probe to be systematically diagnosed channel by channel. This segmentation enables integrity monitoring of complex probes without overwhelming complexity in the testing procedure.
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 fast and non-intrusive monitoring of the entire eddy current system acquisition chain, including multi-element probes, with scalable and inexpensive implementation, capable of generating accurate system condition diagnostics within short time intervals between inspections.
Implementation Method 1
The alternating current in the coil generates a changing magnetic field, which interacts with the test specimen and generates eddy currents. Variations in the phase and magnitude of these eddy currents can be monitored using a receiver coil
Implementation Method 2
Closing the circuit (the test loop) induces currents which are detected by the eddy current system
Data Source
AI summary
An eddy current object testing system includes an EC probe and an acquisition channel which is configured to receive an EC signal from the EC probe and to generate a visual output, namely an impedance plane representation, of the output. A display is coupled to the acquisition channel to display the visual output. The at least one probe is provided with a test loop substantially surrounding it and has a series switch which can be selectively closed or opened to thereby cause the image plane to assume a state that is indicative of a fault, if any, in the EC probe.