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- Title
Detection of corrosion pits based on an analytically optimised eddy current sensor.
- Authors
Liyuan Yin; Bo Ye; Rodriguez, S.; Leiva, R.; Xiaobai Meng; Akid, R.; Wuliang Yin; Mingyang Lu
- Abstract
This paper presents the detection of corrosion pits based on an analytically optimised eddy current sensor. Eddy current testing has been traditionally used in NDTapplications where large features, such as cracks, are detected. However, for corrosion pits less than 1 mm in size, it remains a challenge. In this paper, the design and modelling of a differential electromagnetic sensor is presented. The sensor is configured in such a way that the design parameters of which can be optimised through analytical solutions. Combining this with other design features, such as a highly integrated, field-programmable gate array (FPGA)-based digital inductance measurement system, and the data processing method for noise removal and feature identification, the overall instrument exhibits high sensitivity and is capable of detecting corrosion pits smaller than 1 mm in metallic plates.
- Subjects
DETECTORS; PITTING corrosion; NONDESTRUCTIVE testing; HYDRAULIC structures; X-ray diffraction
- Publication
Insight: Non-Destructive Testing & Condition Monitoring, 2018, Vol 60, Issue 10, p561
- ISSN
1354-2575
- Publication type
Article
- DOI
10.1784/insi.2018.60.10.561