IMPACT OF FREQUENCY AND SAMPLE GEOMETRY ON MAGNETACOUSTIC EMISSION VOLTAGE PROPERTIES FOR TWO STEEL GRADES

Boleslaw Augustyniak – Leszek Piotrowski – Marek Chmielewski

   The paper presents the results of the analysis of the influence of magnetizing frequency and sample thickness on the magnetoacoustic emission signal properties. Various parameters such as the rms signal envelope, pulse distribution, and Fourier spectra (FFT) have been taken into account. In order to compare the influence of abovementioned factors with the effect of microstructure similar analysis has been performed for the sample made of steel of different grade.

Keywords: magnetoacoustic emission, nondestructive testing, signal analysis

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