Location

Seattle, WA

Start Date

1-1-1996 12:00 AM

Description

In the context of non-destructive testing, the method of magnetometry has been used in various applications, including flaw detection, analysis of magnetic properties of materials, and corrosion study. In this method, the magnetic field distribution in the vicinity of the specimen is analyzed for obtaining unknown physical, chemical, and geometrical parameters. The source of the magnetic field may be intrinsic in the specimen such as galvanic currents due to corrosion in the specimen, or external source can be used to excite the specimen. The magnetic field measurement is performed using a magnetic field-sensitive indicator. Various magnetic field sensors have been devised with various degree of sensitivity, resolution, ease of use, etc. Hall-effect probes, magnetoresistive sensors, magneto-optic sensors, and induction coils are some of these sensors.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

15B

Chapter

Chapter 8: Systems, New Techniques and Process Control

Section

New Techniques

Pages

2203-2210

DOI

10.1007/978-1-4613-0383-1_289

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Induction Coil Shape and Size Considerations in Magnetic Field Measurement with Spatially Fast Varying Distribution

Seattle, WA

In the context of non-destructive testing, the method of magnetometry has been used in various applications, including flaw detection, analysis of magnetic properties of materials, and corrosion study. In this method, the magnetic field distribution in the vicinity of the specimen is analyzed for obtaining unknown physical, chemical, and geometrical parameters. The source of the magnetic field may be intrinsic in the specimen such as galvanic currents due to corrosion in the specimen, or external source can be used to excite the specimen. The magnetic field measurement is performed using a magnetic field-sensitive indicator. Various magnetic field sensors have been devised with various degree of sensitivity, resolution, ease of use, etc. Hall-effect probes, magnetoresistive sensors, magneto-optic sensors, and induction coils are some of these sensors.