Investigating the three-dimensional structure of stray fields in the boundary layer at micron scale using angled volumetric scanning

Gibbs, Robert, Meydan, Turgut ORCID: https://orcid.org/0000-0002-4608-0507 and Williams, Paul ORCID: https://orcid.org/0000-0002-4901-6164 2017. Investigating the three-dimensional structure of stray fields in the boundary layer at micron scale using angled volumetric scanning. Presented at: ISEM 2017 The 18th International Symposium on Applied Electromagnetics and Mechanics, Chamonix-Mont-Blanc, France, 3-6 September 2017.

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Abstract

A new versatile magnetic sensor scanning hardware, developed to volumetrically scan the thin boundary layer fields above a given sample has been developed. Scans of a 25×25 mm sample of Grain-oriented (3% Si) electrical steel have been successfully achieved at resolutions of 50 μm/pixel and 10 μm/pixel indicating domain and micro-domain structures. A new 3D printed sensor head and scanning methodology has been developed to investigate the three-dimensional shape of the stray fields. Initial results show promise in quantifying the extent, shape and amplitude of stray fields in the boundary layer. The fields (±25 A/m at the height of the scan) are initially shown not to extend much beyond 300 μm from the sample surface.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Completion
Status:	Unpublished
Schools:	Schools > Engineering
Funders:	EPSRC Doctoral Training Grant (Ref EP/M507842/1)
Date of First Compliant Deposit:	12 October 2017
Last Modified:	21 Apr 2023 06:18
URI:	https://orca.cardiff.ac.uk/id/eprint/105469

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