Method of non-destructively testing, a system and a computer program product

Method of non-destructively testing, a system and a computer program product

The invention relates to a method of non-destructively testing a magnetisable conducting object surrounded by a magnetisable layer. The method comprises the step of abruptly changing a field strength of a primary magnetic field that is applied exterior to the magnetisable layer. Further, the method...

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Hauptverfasser: DE JONG PAUL ANDRE, VAN OVERBEEK THOMAS THEODORUS ARNOLDUS, DE HAAN VICTOR OTTO
Format: Patent
Sprache:eng
Schlagworte:
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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creator DE JONG PAUL ANDRE
VAN OVERBEEK THOMAS THEODORUS ARNOLDUS
DE HAAN VICTOR OTTO
description The invention relates to a method of non-destructively testing a magnetisable conducting object surrounded by a magnetisable layer. The method comprises the step of abruptly changing a field strength of a primary magnetic field that is applied exterior to the magnetisable layer. Further, the method comprises the step of receiving a vanishing secondary magnetic field generated by eddy currents induced by the changed field strength of the primary magnetic field. The method also comprises the step of analyzing a temporal field strength of the received secondary magnetic field for deriving characteristics of the magnetisable conducting object. In addition, the method comprises the step of applying a transient tertiary magnetic field exterior to the magnetisable layer when the field strength of the primary magnetic field abruptly changes, wherein the orientation of the primary and tertiary magnetic field, respectively, are mutually opposite.
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subjects MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
title Method of non-destructively testing, a system and a computer program product
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