Čilliková Mária, Mičietová Anna, Čep Robert, Mičieta Branislav, Neslušan Miroslav, Kejzlar Pavel
Faculty of Mechanical Engineering, University of Žilina, Univerzitná 1, 01026 Žilina, Slovakia.
Faculty of Mechanical Engineering, VŠB-Technical University of Ostrava, 17. Listopadu 2172/15, 70800 Ostrava, Czech Republic.
Materials (Basel). 2021 Mar 8;14(5):1293. doi: 10.3390/ma14051293.
This study is focused on the asymmetrical Barkhausen noise emission of a hard milled surface during cyclic magnetisation. The Barkhausen noise is studied as a function of the magnetising voltage and the hard milled surface is compared with a surface after heat treatment. The asymmetry in the Barkhausen noise emission after hard milling occurs due to the typical "sandwich" structure and the different magnetic hardnesses of the different layers beneath the free surface. Furthermore, this asymmetry is also due to the preferential orientation of the matrix in the direction of the cutting speed and magnetostatic fields, which hinder or favour the premagnetising process.
本研究聚焦于硬铣削表面在循环磁化过程中巴克豪森噪声发射的不对称性。研究了巴克豪森噪声作为磁化电压的函数,并将硬铣削表面与热处理后的表面进行了比较。硬铣削后巴克豪森噪声发射的不对称性是由于典型的“三明治”结构以及自由表面下方不同层的不同磁硬度所致。此外,这种不对称性还归因于基体在切削速度和静磁场方向上的择优取向,这会阻碍或促进预磁化过程。