System and method for determining stress of a component made of magnetizable material
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United States of America Patent
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Nov 8, 2016
Grant Date -
May 9, 2013
app pub date -
May 23, 2011
filing date -
May 21, 2010
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Abstract
The present system determines a significant stress value (σ) of a component made of magnetizable material. The system has a generating stage for generating a magnetic field of varying amplitude (H); and also includes a pickup stage for acquiring a Barkhausen noise signal (MBN) alongside variations in the amplitude (H) of the magnetic field. The system is characterized by having a processing unit for calculating the reciprocal (1/MBNmax) of the maximum value (MBNmax) of the signal (MBN), alongside variations in the amplitude (H) of the magnetic field. The processing unit has a memory stage storing a linear relation between the reciprocal (1/MBNmax) of the maximum value and the significant stress value (σ).
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