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Non-Destructive Testing of Carbon Fiber-Reinforced Plastics (CFRPs) Using a Resonant Eddy Current Sensor. | LitMetric

AI Article Synopsis

  • - Eddy current testing (ECT) is used to find defects in metallic materials, but researchers are exploring ways to effectively test CFRP materials by either increasing operating frequencies or enhancing coil structures.
  • - The paper introduces a new design of an LC resonator utilizing inductance-to-digital converters (LDCs) to simplify the detection of the resonant frequency in materials being tested.
  • - Simulation results validate the coil design, and experiments show that the LC resonator offers a high signal-to-noise ratio and sensitivity for detecting defects, while also displaying strong anti-interference capabilities.

Article Abstract

Eddy current testing (ECT) is commonly used for the detection of defects inside metallic materials. In order to achieve the effective testing of CFRP materials, increasing the operating frequency or improving the coil structure is a common method used by researchers. Higher or wider operating frequencies make the design of the ADC's conditioning circuit complex and difficult to miniaturize. In this paper, an LC resonator based on inductance-to-digital converters (LDCs) is designed to easily detect the resonant frequency response to the state of the material under test. The reasonableness of the coil design is proven by simulation. The high signal-to-noise ratio (SNR) and detection sensitivity of the LC resonator are demonstrated through comparison experiments involving multiple probes. The anti-interference capability of the LC resonator in CFRP defect detection is demonstrated through various interference experiments.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11174518PMC
http://dx.doi.org/10.3390/s24113449DOI Listing

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