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Data for Imaging damage in steel using a diamond magnetometer
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Zhou, L. Q., Patel, R. L., Frangeskou, Angelo, Nikitin, Alexander, Green, Ben L., Breeze, Ben, Onoda, S., Isoya, J. and Morley, Gavin W. (2020) Data for Imaging damage in steel using a diamond magnetometer. [Dataset]
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Archive (ZIP) (Zip archive)
1) Steel Open Source Data.zip - Published Version Available under License Creative Commons Attribution 4.0. Download (519Mb) |
Abstract
We demonstrate a simple, robust, and contactless method for nondestructive testing of magnetic materials such as steel. This uses a fiber-coupled magnetic sensor based on nitrogen-vacancy centers (NVCs) in diamond without magnetic shielding. Previous NVC magnetometry has sought a homogeneous bias magnetic field on the diamond to improve the sensitivity. In contrast, here we show that the spatial resolution for imaging is improved by applying an inhomogeneous magnetic field to the steel even though this leads to an inhomogeneous magnetic field on the diamond. Structural damage in the steel distorts the inhomogeneous magnetic field and by detecting this distortion we reconstruct the damage profile through quantifying the shifts in the NVC Zeeman splitting. With a 1-mm magnet as the source of our inhomogeneous magnetic field, we achieve a high spatial resolution of 1 mm in the plane parallel and 0.1 mm in the direction perpendicular to the surface of the steel. This works even when the steel is covered by a nonmagnetic material. The lift-off distance of our sensor head from the surface of 316 stainless steel is up to 3 mm.
Item Type: | Dataset | ||||||||||||||||||
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Subjects: | Q Science > QC Physics | ||||||||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||||||||
Type of Data: | Experimental data | ||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Steel -- Magnetic properties, Magnetic fields -- Measurement, Magnetic resonance, Diamonds -- Nondestructive testing | ||||||||||||||||||
Publisher: | University of Warwick, Department of Physics | ||||||||||||||||||
Official Date: | 16 December 2020 | ||||||||||||||||||
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Status: | Not Peer Reviewed | ||||||||||||||||||
Publication Status: | Published | ||||||||||||||||||
Media of Output (format): | .csv, .txt | ||||||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||||||||
Description: | Data record consists of a single zip archive organised according to data contained. Raw data is primarily in csv format, with each subfolder containing an explanatory readme txt file. |
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Date of first compliant deposit: | 19 February 2021 | ||||||||||||||||||
Date of first compliant Open Access: | 19 February 2021 | ||||||||||||||||||
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