advanced
Journal Information
Journal Information
   Description
   Editorial Board
   Guide for Authors
   Ordering

Contents Services
Contents Services
   Regular Issues
   Special Issues
   Authors Index

Links
Links
   FEI STU Bratislava
   SAS Bratislava

   Feedback

[7s, 2010] 

Journal of Electrical Engineering, Vol 61, 7s (2010) 32-35

REAL TIME VISUALIZATION OF ALTERNATING MAGNETIC FIELDS USING 2-DIMENSIONAL INTEGRATED HALL SENSOR ARRAY

Jongwoo Jun – Youngmin Park – Jinyi Lee

   A visualization method of alternating magnetic fields done in real time with a high spatial resolution is proposed in this paper. 1024 Hall sensors are arrayed every 0.78 mm intervals in a 2525 mm2 area on a nickel-zinc ferrite wafer for measuring the magnetic field intensity. A 2.5~20 kHz alternating magnetic field could be visualized by using this AC-type magnetic camera. The inspection of surface cracks on aluminium alloy specimens using the distribution of the alternating magnetic field was done in order to verify this method.

Keywords: magnetic field, sensor array, non-destructive testing, magnetic flux leakage, sheet type induced current, crack inspection


[full-paper]


© 1997-2019  FEI STU Bratislava