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Updated: May 5, 2026
06:17
Quantifying the Relative Thickness of Conductive Ferromagnetic Materials Using Detector Coil-Based Pulsed Eddy Current Sensors
Published on: January 16, 2020
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Development of Pulsed Eddy Current Nondestructive Testing: A Review
Qian Huang1, Ruilin Wang1, Jingxi Hu1
1School of Petroleum Engineering, Chongqing University of Science and Technology, Chongqing 401331, China.
Sensors (Basel, Switzerland)
|May 4, 2026
Summary
Pulsed Eddy Current Testing (PECT) advances are reviewed for inspecting non-ferromagnetic materials in new energy applications. This technology evolution addresses challenges like electromagnetic leakage and lift-off effects for improved defect detection.
Area of Science:
- Materials Science
- Non-Destructive Testing (NDT)
Background:
- Pulsed Eddy Current Testing (PECT) is a non-destructive testing method with wide frequency spectrum and high penetration depth.
- PECT is increasingly vital for inspecting non-ferromagnetic materials like austenitic stainless steel in sectors such as petrochemicals, new energy, and aerospace.
- The growing use of liquefied natural gas (LNG), methanol, and liquid hydrogen necessitates advanced NDT for these materials.
Purpose of the Study:
- To systematically review recent advancements in Pulsed Eddy Current Testing (PECT) technology.
- To focus on research outcomes from the past decade.
- To identify future research and industrial promotion directions for PECT.
Main Methods:
- Review of detection sensors and modeling methods in PECT.
- Analysis of detection signal processing techniques.
- Examination of engineering applications of PECT.
Main Results:
- PECT technology is evolving to adapt to complex scenarios, including challenges posed by low magnetic permeability and lift-off effects.
- Significant progress has been made in sensors, modeling, signal processing, and applications over the last decade.
- PECT shows increasing adaptability for inspecting non-ferromagnetic materials in demanding industrial environments.
Conclusions:
- PECT technology is crucial for the NDT of non-ferromagnetic materials in emerging energy sectors.
- Continued research and development are essential to overcome existing challenges and enhance PECT's industrial applicability.
- This review provides a reference for future innovations and the broader adoption of PECT.
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