Detection Probability Improvement for Nondestructive Evaluation Using a Magnetic Camera
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.
Ichsan Setya Putra and Djoko Suharto
J. Y. Lee et al., "Detection Probability Improvement for Nondestructive Evaluation Using a Magnetic Camera", Key Engineering Materials, Vols. 306-308, pp. 241-246, 2006