Detection Probability Improvement for Nondestructive Evaluation Using a Magnetic Camera

Jin Yi Lee; Ji Seoung Hwang; Se Ho Choi; Jae Kyoo Lim

doi:10.4028/www.scientific.net/KEM.306-308.241

Paper Titles

An Enhanced Procedure for Seismic Monitoring of Damaged Complex R.C. Structures
p.217

Damage Detection of a Gear with Initial Pitting Using the Zoomed Phase Map of Continuous Wavelet Transform
p.223

Damage Identification of an Automotive Engine Based on Detection of Impact Vibration Using an Adaptive Filter
p.229

A Study of Leakage Magnetic Flux Detector Using Hall Sensors Array
p.235

Detection Probability Improvement for Nondestructive Evaluation Using a Magnetic Camera
p.241

Detection of Surface Flaw in a Homogeneous Ceramic Product by Resonant Ultrasound
p.247

Damage Detection of a Circular Cylindrical Shell with Frequency Sensitivities
p.253

Model of Behavior of Materials with Delaminations under Hydrogen Embrittlement Conditions
p.259

Damage Tolerance Analysis on Repaired Fuselage Skin
p.265

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Detection Probability Improvement for Nondestructive Evaluation Using a Magnetic Camera

Abstract:

It is important to estimate the intensity distribution of a magnetic field as a possible magnetic method in an industrial nondestructive evaluation application. A magnetic camera provides the distribution of a quantitative magnetic field with homogeneous lift-off and same spatial resolution. Magnetic flux leakage near a crack on the specimen can be amplified by using a 3- dimensional magnetic fluid, that is to say a magnetic lens. This study introduces the experimental consideration of the effects of magnetic lenses for concentrating of magnetic flux. The experimental results showed that the magnetic fluid has a sufficient lens effect for magnetic camera and effect of improvement in probability of detection.