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ASM Handbook

Nondestructive Evaluation of Materials

Edited by
Aquil Ahmad
Aquil Ahmad
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Leonard J. Bond
Leonard J. Bond
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ASM International
Volume
17
ISBN electronic:
978-1-62708-190-0
Publication date:
2018
Book Chapter

Magnetic-Particle Inspection[1]

By
David Eisenmann
David Eisenmann
Revising author
Iowa State University
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Published:
2018
Page range:
96 - 123
Publication history
August 21, 2018

Abstract

Magnetic-particle inspection is a method of locating surface and subsurface discontinuities in ferromagnetic materials. This article discusses the applications and advantages and limitations of magnetic-particle inspection. It describes magnetic fields in terms of magnetized ring, magnetized bar, circular magnetization, longitudinal magnetization, and effects of flux direction. General applications, advantages, and limitations of the various magnetizing methods used in magnetic-particle inspection are listed in a table. The article discusses the items that must be considered in establishing a set of procedures for the magnetic-particle inspection of a specific part: type of current, type of magnetic particles, method of magnetization, direction of magnetization, magnitude of applied current, and equipment. It concludes with a discussion on demagnetization after magnetic-particle inspection.

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David Eisenmann, 2018. "Magnetic-Particle Inspection", Nondestructive Evaluation of Materials, Aquil Ahmad, Leonard J. Bond

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