MicroScan
MicroScan is a software that enables signal analysis of Barkhausen noise data.
MicroScan provides a wide range of user definable measurement and analysis parameters, allowing the system to adjust to test conditions:
- Evaluate Barkhausen noise signal data using several functions and parameters. This can be used e.g. for residual stress and microstructure analysis.
- Gain deeper information about the phenomena.
- Analyze different parameters after the measurement.
- Compare multiple data sets at the same time. You have versatile options available for handling the data.
MicroScan features
Values for Avg, Pos – and Pos +
Most of the reported values are shown for the negative and positive of magnetization half cycle as well as the average of the entire cycle.
- “Avg” values are those from an entire magnetizing cycle
- “Pos –” values from the negative slope of the magnetizing cycle
- “Pos +” values are from the positive slope of the magnetizing cycle.
Measurement view
- Display the recorded magnetizing current and Barkhausen noise signal waveform
- Record length is set by selecting the amount of zero crossings with the selected frequency.
- Data can be zoomed and panned.
- Hardware and software filters are implemented into the shown data.
RMS
- Most used parameter in Barkhausen noise signal analysis.
- Positive and negative RMS can be used to detect e.g., if there is residual magnetism in the sample.
Peak value
- Searches the highest and lowest recorded peak value from recorded data.
- Calculates the average of these peaks.
Peak position
- Barkhausen noise burst peak x-axis position compared to magnetizing current waveform zero-crossing.
FWHM
- Barkhausen noise burst full width at half maximum i.e. wideness of the burst.
Spectrum
- Frequency domain view of the recorded time domain raw data.
- Data can be post-processed with selected software filter ranges.
Integral of the bursts, coercivity, remanence
- Unitless representation of the hysteresis loop.
- A magnetic hysteresis loop behavior can be plotted with the integral of BN burst on Y-axis and using Magnetizing current waveform as X-axis.
- Coercivity is the average x-value, where hysteresis curve intercepts the x-axis.
- Remanence is the average y-value, where hysteresis loop intercepts the y-axis.
Pulse height distribution
- Each signal magnitude point is placed on x-axis and then counted on y-axis.
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