Academy of Finland  
Funding decision
Organisation Tampere University
Project title Magnetic Barkhausen Noise: From Fundamental Physics to Non-Destructive Testing
Applicant / Contact person Honkanen, Mari
Decision No. 338954
Decision date 03.06.2021
Funding period 01.09.2021 - 31.08.2025
Funding 489 677
Project description
The structure of a ferromagnetic material can be characterized by its microstructural and magnetic features. When a ferromagnetic material is placed in an external magnetic field, its small magnetic domains start to move. This movement causes a measurable signal called Barkhausen noise (BN). BarFume aims to improve the understanding of how the microstructural features of the sample affect the domain wall movement, i.e. BN, and how this information could be used to improve the accuracy of BN-based quality control methods. In addition, novel machine learning techniques will be developed to automatically classify materials microstructure using BN as input. BarFume is an interdisciplinary project that combines materials characterization to BN measurements, micromagnetic modelling, and advanced statistical analysis. The utilization of the research results is obvious in collaboration with a key Finnish industrial partner. The research will be done at Tampere University.