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A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
Published on: September 30, 2019
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Fiberoptic metal detector capable of profile detection
Wei-Shu Hua1, Joshua R Hooks2, Nicholas A Erwin2
1Department of Engineering Science and Ocean Engineering, National Taiwan University, Taiwan.
Proceedings of Spie--The International Society for Optical Engineering
|December 21, 2013
Summary
A new ferromagnetic polymer metal detector uses a fiber-optic sensor for simple, compact, and RF-resistant detection. It works by sensing disruptions in magnetic flux, successfully detecting various metal shapes.
Area of Science:
- Materials Science
- Sensor Technology
- Physics
Background:
- Traditional electromagnetic metal detectors suffer from radio frequency interference.
- Developing novel sensing materials is crucial for advanced detection systems.
Purpose of the Study:
- To develop a novel ferromagnetic polymeric metal detector system.
- To utilize a fiber-optic Mach-Zehnder interferometer with a new ferromagnetic polymer as the magnetostrictive sensing device.
Main Methods:
- Fabrication of a novel ferromagnetic polymer.
- Integration of the polymer with a fiber-optic Mach-Zehnder interferometer.
- Characterization of magnetic properties and sensing capabilities.
Main Results:
- The developed system is simple to fabricate and small in size.
- The system exhibits resistance to radio frequency interference.
- Successful sensing of different geometrical metal shapes was achieved by detecting magnetic flux density disruptions.
Conclusions:
- The novel ferromagnetic polymeric metal detector system offers a promising alternative to traditional detectors.
- The system's design provides advantages in simplicity, size, and interference resistance.
- Further research into magnetic properties and applications is warranted.
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