Campus Units
Electrical and Computer Engineering, Ames Laboratory
Document Type
Article
Publication Date
10-2015
Journal or Book Title
Materials Evaluation
Volume
73
Issue
10
First Page
1377
Last Page
1383
Abstract
Barkhausen noise emissions occur in ferromagnetic materials on application of a time varying external magnetic field. These emissions primarily occur because of the movement of domain walls in the presence of pinning sites or discontinuities, which act as inhibitors to domain wall motion within the material. The emissions can be sensed using an induction coil placed close to the sample surface. The coil can sense the variations in magnetic flux, which translates to the induced electromagnetic field. This study optimizes the design of the barkhausen noise sensor via finite element simulations. The different parameters involved in improvement of the design of the barkhausen noise sensor are discussed.
Copyright Owner
American Society for Nondestructive Testing
Copyright Date
2015
Language
en
File Format
application/pdf
Recommended Citation
Prabhu Gaunkar, Neelam G.; Nlebedim, Cajetan Ikenna; and Jiles, David C., "Approach for Improving the Sensitivity of Barkhausen Noise Sensors with Applications to Magnetic Nondestructive Testing" (2015). Electrical and Computer Engineering Publications. 100.
https://lib.dr.iastate.edu/ece_pubs/100
Comments
This is an article from Materials Evaluation 73 (2015): 1377. Posted with permission.