Development of a Velocity-Adaptable Alternating Current Field Measurement Device for Crack Inspection in Rails

Ge, Jiuhao; X, Chen; Hu, Bo

doi:10.1109/jsen.2023.3288214

Cited by 3 publications

(1 citation statement)

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“…Within a certain range of lift-off, changes in the probe’s lift-off height have a minimal impact on the eddy current strength. ACFM offers advantages such as non-contact inspection, insensitivity to lift-off, qualitative and quantitative capabilities, and good penetration through non-metallic coatings [ 15 , 16 , 17 ]. Furthermore, this detection method is suitable for both ferromagnetic and non-ferromagnetic metallic materials.…”

Section: Introductionmentioning

confidence: 99%

Research on Alternating Current Field Measurement Method for Buried Defects of Titanium Alloy Aircraft Skin

Liao,

Wang,

et al. 2024

Sensors

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Titanium alloys are extensively used in the manufacturing of key components in aerospace engines and aircraft structures due to their excellent properties. However, aircraft skins in harsh operating environments are subjected to long-term corrosion and pressure concentrations, which can lead to the formation of cracks and other defects. In this paper, a detection probe is designed based on the principle of alternating current field measurement, which can effectively detect both surface and buried defects in thin-walled titanium alloy plates. A finite element simulation model of alternating current field measurement detection for buried defects in thin-walled TC4 titanium alloy plates is established using COMSOL 5.6 software. The influence of defect length, depth, and excitation frequency on the characteristic signals is investigated, and the detection probe is optimized. Simulation and experimental results demonstrate that the proposed detection probe exhibits high detection sensitivity to varying lengths and depths of buried defects, and can detect small cracks with a length of 3 mm and a burial depth of 2 mm, as well as deep defects with a length of 10 mm and a burial depth of 4 mm. The feasibility of this probe for detecting buried defects in titanium alloy aircraft skin is confirmed.

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Section: Introductionmentioning

confidence: 99%