NDT flaw mapping of steel surfaces by continuous magnetic Barkhausen noise: Volumetric flaw detection case

Franco, Freddy A.; Padovese, Linilson Rodrigues

doi:10.1016/j.ndteint.2009.06.007

Cited by 17 publications

(13 citation statements)

References 11 publications

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“…The CMBN method was later used by Franco 11 in his doctoral thesis. In this work, volumetric defect mapping results were obtained, which were later published corroborating some of the observations of Crouch 12 , such as the effect of velocity and field strength on the obtained MBN quality.…”

Section: Mbn Continuoussupporting

confidence: 85%

Continuous Scanning Technique with Barkhausen Magnetic Noise for Carbon Steel Sheets

et al. 2019

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This work studies the application of a Non-Destructive Inspection Technique (NDIT), based on the Magnetic Barkhausen Noise (MBN), for the detection of non-homogeneous regions in carbon steel plates. It presents the advances in the development of a variant of a new non-destructive magnetic test technique, called Continuous Scanning Magnetic Barkhausen Noise (CSMBN). The non-homogeneous or damaged regions were produced by plastic deformations in rolled and annealed sheets of SAE 1060 and 1070 steels.MBN is generated by abrupt changes in the magnetization of materials when subjected to alteration. The sensitivity of the MBN signals in the detection of plastic deformations was analyzed varying parameters such as excitation magnetic field frequency and the speed of movement of the probe. The behavior of the root mean square of magnetic Barkhausen Noise signal (RMS MBN ) parameter was correlated with the position of the nonhomogeneous regions detected in the samples. An evaluation of the technique applied to the measurement was made, comparing the results obtained with the Static Magnetic Barkhausen Noise (SMBN) technique, which is a method already established in the literature. The results showed that in all cases studied it was possible to detect the position of the damage, due to variation of the magnetic field. These changes are affected by the presence and distribution of elastic stresses (compression and traction), plastic deformation and microstructure modification. The results of CSMBN were similar to the SBMN with the advantage of being a continuous and more productive procedure. This new technique increases the spectrum of NDIT solutions for problems not contemplated by existing techniques.

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Section: Mbn Continuoussupporting

confidence: 85%

Continuous Scanning Technique with Barkhausen Magnetic Noise for Carbon Steel Sheets

et al. 2019

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“…The magnet moving over the ferromagnetic sample produces a time-varying magnetic field that can excite BN if it is strong enough. The CMBN probe is an assembly of a magnet producing the magnetic field and a ferrite-cored coil for BN measurements [9]. Figure 5 shows a typical assembly of the CMBN device for measurements.…”

Section: Continuous Magnetic Barkhausen Noise (Cmbn)mentioning

confidence: 99%

“…Figure 5 shows a typical assembly of the CMBN device for measurements. CMBN has been studied by many researchers [9,11,45]. Continuous magnetic BN measurements can be made to detect anisotropy and the direction of the magnetic easy axis of ferromagnetic samples [45] as well as for studying the stress state [44].…”

Section: Continuous Magnetic Barkhausen Noise (Cmbn)mentioning

confidence: 99%

“…Continuous magnetic BN measurements can be made to detect anisotropy and the direction of the magnetic easy axis of ferromagnetic samples [45] as well as for studying the stress state [44]. Franco and Padovese [9] utilized the method to detect wall thickness loss and for the detection of plastic deformation of steel surfaces [11]. Franco Grijalba et al [11] stated that the CMBN pickup coil has the same characteristics as a stationary BN pickup.…”

Section: Continuous Magnetic Barkhausen Noise (Cmbn)mentioning

confidence: 99%

“…The pickup coil detects the domain structure reconfigurations causing the changes in the magnetization as a response to the magnetization field [8]. The BN response expressed as voltage is induced in a pickup winding coil placed around the material sample or on its surface [9] according to Faraday's law of induction [4]. The electromagnetic field that is produced by the magnetizing yoke will decay exponentially into the depth in a direction perpendicular to the surface, due to eddy current damping.…”

Section: Introductionmentioning

confidence: 99%

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Barkhausen Noise Probes and Modelling: A Review

et al. 2019

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This review looks at the main types of magnetic Barkhausen noise (BN) probes that have been developed. The aim of this review is to summarize the existing knowledge of magnetic Barkhausen noise probes and the magnetic modelling of them. The BN probes have been the focus of many previous studies, but no sufficient review or conclusions have been made so far. This review focuses on combining information regarding the different types of BN probes and their modelling. The review is divided into two sections; in the first part the different designs and types of Barkhausen noise probes are introduced. The second part of the review deals with the BN probe modelling with various modelling software. Finally, a comparison of the experimental measurements is made and BN sensitivity is discussed.

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Non-destructive Flaw Mapping of Steel Surfaces by the Continuous Magnetic Barkhausen Noise Method: Detection of Plastic Deformation

Grijalba

Padovese

2018

J Nondestruct Eval

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NDT flaw mapping of steel surfaces by continuous magnetic Barkhausen noise: Volumetric flaw detection case

Cited by 17 publications

References 11 publications

Continuous Scanning Technique with Barkhausen Magnetic Noise for Carbon Steel Sheets

Continuous Scanning Technique with Barkhausen Magnetic Noise for Carbon Steel Sheets

Barkhausen Noise Probes and Modelling: A Review

Non-destructive Flaw Mapping of Steel Surfaces by the Continuous Magnetic Barkhausen Noise Method: Detection of Plastic Deformation

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