A System for Controllable Magnetic Measurements of Hysteresis and Barkhausen Noise

Iterative Methods for Waveform Control in Magnetic Measurement Systems

“…This study aims to define and test the most efficient magnetic flux density control method in the context of the MBNenergy hysteresis cycle characterization and STL application [21][22] [36]. To obtain adapted comparisons and reach our objective, a specific series of criteria has been defined:  Number of iterations: a reduced number of iterations is important, especially in the low-frequency range where a measure can take several minutes and generate large data files complex to process.…”

“…6 supposes this condition to be respected [15]. In the case of Barkhausen noise measurements, either the excitation current or the magnetic excitation Hsurf is usually imposed triangular [21][22] and measurements rarely done under sinusoidal flux density. Ba(Hsurf) and MBNenergy(Hsurf) can be obtained from the same experimental setup.…”

Barkhausen Noise Probes and Modelling: A Review

“…Thus, in the magnetization unit, the copper coil for magnetizing has also been wrapped around both legs as demonstrated in Fig. 1a, based on Prabhu Gaunkar et al [14][15][16], or wrapped around each of four magnetizing legs as in White's tetrapole probe [8]. However, for some special cases, for example in the magnetization of a wire sample, Capo-Sanchez et al [17] reported the use of a solenoid with 700 turns of copper wire.…”

“…Therefore, the use of self-made probes allows simultaneous use of other sensors with the BN pickup coil such as Hall sensors and induction coils [28]. In many studies e.g., [16,28,39,41], the Barkhausen noise search coil was equipped with Hall sensors. A vertical array of Hall sensors has been used to measure tangential magnetic surface fields at certain locations above the sample and field extrapolation technique used to determine the real sample magnetization [28], whereas an induction coil was utilized to control the sample magnetization [28].…”

Design of A Multifunctional Micro-Magnetic Testing Instrument

“…Alexandr Stupakov et al [7] designed a controllable magnetic measurement system of hysteresis and Barkhausen noise with feedback algorithm. Sargon Youssef et al [8] described a multi-channel micro-magnetic testing system in which three testing methods are combined to extract 21 micromagnetic feature. Meanwhile, inline inspection systems were developed and deployed in steel industry to monitoring the quality of rolled steel and detecting the hardness spots on heavy steel plates [9,10].…”