A magnetic scanner based on residual magnetization used for testing ferromagnetic articles

Bulychev, O. A.; Shleenkov, A. S.

doi:10.1134/s106183090802006x

Cited by 2 publications

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“…Thin film magnetoresistive transducers combined into arrays that allow the scanning of the surface of an inspected article via the simple switching of sensitive elements without mechanical displacement have been developed in the Institute of Metal Physics (Ural Branch, Russian Academy of Sciences) [57]. These transducers have been successfully applied in NDT.…”

Section: Magnetoresistive Transducersmentioning

confidence: 99%

Possibilities for the selection of magnetic field transducers for nondestructive testing

Reutov

Shcherbinin

Волков

2014

Russ J Nondestruct Test

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Section: Magnetoresistive Transducersmentioning

confidence: 99%

Possibilities for the selection of magnetic field transducers for nondestructive testing

Reutov

Shcherbinin

Волков

2014

Russ J Nondestruct Test

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“…Another advantage of this method is the capacity not only to detect the superficial anomalies but also the internal ones that the element or structure can have. Magnetoresistive sensors have the ability to detect magnetic field disturbances, which is of great importance for the detection of anomalies in ferromagnetic structures when using the MMM [8,9]. Such distortion may be a reaction of some defect in the structure, which can be flaws, fractures, hits or dents.…”

Section: Introductionmentioning

confidence: 99%

Mobile robot with failure inspection system for ferromagnetic structures using magnetic memory method

et al. 2021

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Flaws or cracks are one of the major failures in oil and gas pipeline networks. The early detection of these failures is very important for the safety of the industry, and this last requires of analysis for non-destructive testing (NDT), which is reliable, inexpensive and easy to implement. In this paper, we propose the development of an embedded prototype mounted on a mobile robot for the inspection of defects in ferromagnetic plates. This prototype has two embedded systems (control and data acquisition), which are based on a microcontroller of 8 and 32 bits, respectively. On the one hand, the first system for control has the logic to govern the sensors and motors that will allow to the robot moves with autonomous way during 45 min. While, the second system presents an algorithm for storing, processing and sending the data obtained from the sensors, being able to measure variations in the magnetic field in the order of 0.1 µT. Magnetic-field reading tests have been carried out on control ASTM A-27 ferromagnetic plates, obtaining experimental response in the 3 axes of the magnetic domains, which is very close to the expected results by the magnetic-flux density model that is calculated from the fields E and B derived from the equations of a Hertz dipole, and developed in the high-level Python programming language. The prototype proposed for NDT can detect geometric defects in the range of millimeters, producing changes in the density of the magnetic field in the order of thousands of µT.

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A magnetic scanner based on residual magnetization used for testing ferromagnetic articles

Cited by 2 publications

References 0 publications

Possibilities for the selection of magnetic field transducers for nondestructive testing

Possibilities for the selection of magnetic field transducers for nondestructive testing

Mobile robot with failure inspection system for ferromagnetic structures using magnetic memory method

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