Measurement of permeability and ferrite/austenite phase fraction using a multi-frequency electromagnetic sensor

W. Yin; X. J. Hao; A. J. Peyton; M. Strangwood; C. L. Davis

doi:10.1016/j.ndteint.2008.01.009

Measurement of permeability and ferrite/austenite phase fraction using a multi-frequency electromagnetic sensor

W. Yin, X. J. Hao, A. J. Peyton, M. Strangwood, C. L. Davis

Research output: Contribution to journal › Article › peer-review

Abstract

This paper presents the measurement of ferrite/austenite phase fraction using a multi-frequency electromagnetic sensor. A simple analytical model was established that can describe the response of the sensor for samples containing varying fractions of ferromagnetic phase over a wide range of frequencies (100 Hz-1 MHz). In particular, a new feature, the peak frequency of the imaginary part of the inductance, is found to be able to distinguish between samples across the whole range of the ferrite percentages. FEM models were used to simulate representative real microstructures from the samples and to relate the relative permeability to the ferrite fraction. Experimental results suggest that the accuracy of ferrite/austenite percentage measurement is within 8%. © 2008 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	64-68
Number of pages	4
Journal	NDT and E International
Volume	42
Issue number	1
DOIs	https://doi.org/10.1016/j.ndteint.2008.01.009
Publication status	Published - Jan 2009

Keywords

Analytical models
Electromagnetic sensor
FEM
Ferrite fraction
Microstructure

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10.1016/j.ndteint.2008.01.009

New industrial electromagnetic sensor systems improve safety processes and optimise capabilities in the UK's energy, rail and manufacturing sectors
Peyton, A. (Participant), Yin, W. (Participant), Lionheart, W. (Participant), Marsh, L. (Participant), O'Toole, M. (Participant) & Fletcher, A. (Participant)
Impact: Economic, Technological

Cite this

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title = "Measurement of permeability and ferrite/austenite phase fraction using a multi-frequency electromagnetic sensor",

abstract = "This paper presents the measurement of ferrite/austenite phase fraction using a multi-frequency electromagnetic sensor. A simple analytical model was established that can describe the response of the sensor for samples containing varying fractions of ferromagnetic phase over a wide range of frequencies (100 Hz-1 MHz). In particular, a new feature, the peak frequency of the imaginary part of the inductance, is found to be able to distinguish between samples across the whole range of the ferrite percentages. FEM models were used to simulate representative real microstructures from the samples and to relate the relative permeability to the ferrite fraction. Experimental results suggest that the accuracy of ferrite/austenite percentage measurement is within 8%. {\textcopyright} 2008 Elsevier Ltd. All rights reserved.",

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author = "W. Yin and Hao, {X. J.} and Peyton, {A. J.} and M. Strangwood and Davis, {C. L.}",

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AU - Peyton, A. J.

AU - Strangwood, M.

AU - Davis, C. L.

PY - 2009/1

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N2 - This paper presents the measurement of ferrite/austenite phase fraction using a multi-frequency electromagnetic sensor. A simple analytical model was established that can describe the response of the sensor for samples containing varying fractions of ferromagnetic phase over a wide range of frequencies (100 Hz-1 MHz). In particular, a new feature, the peak frequency of the imaginary part of the inductance, is found to be able to distinguish between samples across the whole range of the ferrite percentages. FEM models were used to simulate representative real microstructures from the samples and to relate the relative permeability to the ferrite fraction. Experimental results suggest that the accuracy of ferrite/austenite percentage measurement is within 8%. © 2008 Elsevier Ltd. All rights reserved.

AB - This paper presents the measurement of ferrite/austenite phase fraction using a multi-frequency electromagnetic sensor. A simple analytical model was established that can describe the response of the sensor for samples containing varying fractions of ferromagnetic phase over a wide range of frequencies (100 Hz-1 MHz). In particular, a new feature, the peak frequency of the imaginary part of the inductance, is found to be able to distinguish between samples across the whole range of the ferrite percentages. FEM models were used to simulate representative real microstructures from the samples and to relate the relative permeability to the ferrite fraction. Experimental results suggest that the accuracy of ferrite/austenite percentage measurement is within 8%. © 2008 Elsevier Ltd. All rights reserved.

KW - Analytical models

KW - Electromagnetic sensor

KW - FEM

KW - Ferrite fraction

KW - Microstructure

U2 - 10.1016/j.ndteint.2008.01.009

DO - 10.1016/j.ndteint.2008.01.009

M3 - Article

SN - 0963-8695

VL - 42

SP - 64

EP - 68

JO - NDT and E International

JF - NDT and E International

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ER -

Measurement of permeability and ferrite/austenite phase fraction using a multi-frequency electromagnetic sensor

Abstract

Keywords

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Impacts

New industrial electromagnetic sensor systems improve safety processes and optimise capabilities in the UK's energy, rail and manufacturing sectors

Cite this