Location

Brunswick, ME

Start Date

1-1-1997 12:00 AM

Description

Magnetic Flux Leakage (MFL) methods are used to detect localized phenomena such as surface or sub-surface cracks in ferromagnetic materials [1]. A dc magnetic field is induced inside the sample being tested, and the distribution of the resultant lines of magnetic flux is determined by the values of magnetic permeability within the region of interest. Characteristically, the magnetic flux“leaks” out of the object in the region of a defect, allowing it to be detected using some kind of magnetic sensor.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

16A

Chapter

Chapter 3: Signal Processing and Image Analysis

Section

Image Analysis

Pages

797-803

DOI

10.1007/978-1-4615-5947-4_104

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Image Processing Techniques to Remove Depth Bias Effects in Magnetic Source Images of Deep Cracks

Brunswick, ME

Magnetic Flux Leakage (MFL) methods are used to detect localized phenomena such as surface or sub-surface cracks in ferromagnetic materials [1]. A dc magnetic field is induced inside the sample being tested, and the distribution of the resultant lines of magnetic flux is determined by the values of magnetic permeability within the region of interest. Characteristically, the magnetic flux“leaks” out of the object in the region of a defect, allowing it to be detected using some kind of magnetic sensor.