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A Novel Eddy Current Testing Error Compensation Technique Based on Mamdani-Type Fuzzy Coupled Differential and
Ahmed N Abdalla1, Kharudin Ali2, Johnny K S Paw3
1Faculty of Electronic and Information Engineering, Huaiyin Institute of Technology, Huaian 223003, China. dramaidecn@gmail.com.
Sensors (Basel, Switzerland)
|July 4, 2018
Summary
This study introduces an eddy current testing error compensation (ECECT) technique using fuzzy logic to accurately measure defect depth, unaffected by coating thickness or lift-off variations. The novel method significantly reduces measurement errors, enhancing inspection reliability in industries like aerospace and nuclear power.
Area of Science:
- Non-destructive testing
- Materials science
- Intelligent control systems
Background:
- Eddy current testing (ECT) is crucial for aircraft and nuclear industries.
- Coating thickness and lift-off introduce uncertainties in defect depth measurements.
- Distinguishing cracks from scratches is challenging, risking safety and productivity.
Purpose of the Study:
- To propose a novel eddy current testing error compensation (ECECT) technique.
- To develop an intelligent fuzzy logic system for accurate defect depth measurement.
- To mitigate errors caused by lift-off and coating thickness in ECT.
Main Methods:
- Implementation of a Mamdani-type fuzzy logic system.
- Design and integration of coupled differential and absolute probes.
- Development of a Simulink block for system simulation and hardware design.
- Measurement of defect depth coefficients influenced by probe lift-off.
Main Results:
- The ECECT technique achieved optimal lift-off correction with error reduction within 0.1%.
- Accurate lift-off measurements were obtained in the range of 1 mm to 5 mm.
- The method demonstrated effective performance in assessing non-linear cracks.
Conclusions:
- The proposed ECECT method offers a robust solution for accurate defect depth measurement.
- Fuzzy logic effectively compensates for lift-off variations in eddy current testing.
- This technique enhances the reliability and safety of inspections in critical industries.
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