At KFKI Atomic Energy research Institute, Budapest, investigatins are being done for studying how steel material of nuclear reactors degrade. A micromagnetic analyser has been built to measure different magnetic parameters and response functions to magnetic excitation. The paper gives a short overview on the magneto-acoustic emission effect and its potential to assess steel properties. Some of the calibrations executed by the authors in the framework of an Indian-Hungarian research cooperation are presented. Magneto-acoustic measurements have been performed on specimens cut from nuclear pressure vessel material blocks and on broken Charpy specimens to compare the micromagnetic responses with the measured mechanical properties.
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