Inductive imaging of the concealed defects with radio-frequency atomic magnetometers

Bevington, P. and Gartman, R. and Chalupczak, W. (2020) Inductive imaging of the concealed defects with radio-frequency atomic magnetometers. Applied Sciences (Switzerland), 10 (19). 6871. ISSN 2076-3417 (https://doi.org/10.3390/app10196871)

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Abstract

We explore the capabilities of the radio-frequency atomic magnetometers in the non-destructive detection of concealed defects. We present results from the systematic magnetic inductive measurement of various defect types in an electrically conductive object at different rf field frequencies (0.4–12 kHz) that indicate the presence of an optimum operational frequency of the sensor. The optimum in the frequency dependence of the amplitude/phase contrast for defects under a 0.5–1.5 mm conductive barrier was observed within the 1–2 kHz frequency range. The experiments are performed in the self-compensated configuration that automatically removes the background signal created by the rf field producing object response.

  • Item type:Article
    ID code:74620
    Dates:
    Date
    Event
    30 September 2020
    Published
    28 September 2020
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:17 Nov 2020 10:34
    Last modified:09 Apr 2024 01:58
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/74620
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