Non-Contact Thickness Measurement System Using a Smart Cantilever Beam

Non-Contact Thickness Measurement System Using a Smart Cantilever Beam

The paper presents the design, fabrication, and experimental validation of a new non-contact resonance-based measurement system to measure the thickness of ferromagnetic sheets and their alloys. The measurement system consists of a cantilever beam as a resonating structure with electromagnetic excit...

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Bibliographic Details
Published in:Experimental techniques (Westport, Conn.) Vol. 47; no. 6; pp. 1161 - 1167
Main Authors: Yenuganti, S., Paliwal, S., Peparthi, M.
Format: Journal Article Magazine Article
Language:English
Published: Cham Springer International Publishing 01-12-2023
Springer Nature B.V
Subjects:
Cantilever beams
Characterization and Evaluation of Materials
Chemistry and Materials Science
Circuits
Electromagnets
Excitation
Ferromagnetic resonance
Ferromagnetism
Materials Science
Piezoelectricity
Research Paper
Resonance
Resonators
Thickness measurement
Thickness
Resonant sensor
Ferromagnetic sheets
Magnetization
Piezoelectric
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Summary:The paper presents the design, fabrication, and experimental validation of a new non-contact resonance-based measurement system to measure the thickness of ferromagnetic sheets and their alloys. The measurement system consists of a cantilever beam as a resonating structure with electromagnetic excitation and piezoelectric detection. The system measures the unknown thickness of a ferromagnetic sheet by measuring the resonance frequency of the cantilever beam resonator. The resonator vibrates at different resonance frequencies depending on the thickness of the ferromagnetic sheet. The electromagnet and the piezoelectric patch are connected with appropriate electronic circuitry for resonance excitation and detection of the resonator. The electronic circuitry will automatically track the resonance frequency of the measurement system for a variation in the ferromagnetic sheet thickness. A complete analytical model of the measurement system was developed and evaluated through experimentation. The analytical and experimental results are found to be in good agreement. The proposed measurement system is simple in design, compact, low cost, and its frequency output decrease linearly with an increase in thickness of the ferromagnetic sheets.
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ISSN:0732-8818
1747-1567
DOI:10.1007/s40799-022-00621-1