Location

La Jolla, CA

Start Date

1-1-1993 12:00 AM

Description

Conventional techniques for measuring magnetic permeability using permeameters require either a thin strip or a ring to be cut from a sample of the material. Obviously, this type of measurement is destructive in nature and cannot be used for in-situ permeability measurements. In this paper, we describe a technique that can be used to measure the permeability of flat plates nondestructively. The method uses a closed-form solution for the on-axis field that is transmitted through the ferromagnetic plate by an axisymmetric coil with a rectangular cross-section, energized by a DC (or very low frequency) current.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

12B

Chapter

Chapter 6: Material Properties

Section

Magnetic Methods and Materials

Pages

1871-1878

DOI

10.1007/978-1-4615-2848-7_239

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Nondestructive Measurement of Magnetic Permeability

La Jolla, CA

Conventional techniques for measuring magnetic permeability using permeameters require either a thin strip or a ring to be cut from a sample of the material. Obviously, this type of measurement is destructive in nature and cannot be used for in-situ permeability measurements. In this paper, we describe a technique that can be used to measure the permeability of flat plates nondestructively. The method uses a closed-form solution for the on-axis field that is transmitted through the ferromagnetic plate by an axisymmetric coil with a rectangular cross-section, energized by a DC (or very low frequency) current.