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Determination and evaluation of sensitivity characteristics a vibration induction transducer for magnetic flaw detection
https://doi.org/10.32446/0368-1025it.2022-10-37-43
Abstract
Methods for assessing the sensitivity characteristics of a vibration induction converter designed to control the discontinuity of the surface of objects when they are magnetized by an applied constant field are described. Based on the analysis of the mathematical model of the output signal of the converter, analytical expressions are obtained for the conversion coefficients of the rate of change in the magnetic field strength and acceleration along the coordinate of the vibration displacement of the converter in the EMF induction coil. The methods of experimental estimation of conversion coefficients are given and the high convergence of calculated and experimental estimates is shown. Based on the formulated conditions for the detection of magnetic field anomalies arising on the defective surface areas and the known values of the conversion coefficients, calculated ratios were obtained to estimate the sensitivity thresholds of the converter according to the orthogonal components of the magnetic field strength distribution. As a result of the experimental verification, the adequacy of the calculated and experimental estimates of the sensitivity thresholds was confirmed. Recommendations are given on the application of computational and experimental methods for assessing the sensitivity characteristics of a vibration induction transducer.
Supporting agencies: The work was carried out with partial fi nancial support from the system of motivating payments and evaluating the effectiveness of the teaching staff of MIREA – Russian Technological University (Research work no. 41 FTI).
About the Authors
Y. L. Nikolaev
MIREA – Russian Technological University
Russian Federation
Russian Federation
Yuriy L. Nikolaev
Moscow
A. A. Samorukov
TMS RUS Limited Liability Company
Russian Federation
Russian Federation
Alexey A. Samorukov
Moscow
A. A. Borisenko
TMS RUS Limited Liability Company
Russian Federation
Russian Federation
Artem A. Borisenko
Moscow
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Review
For citations:
Nikolaev Y.L., Samorukov A.A., Borisenko A.A. Determination and evaluation of sensitivity characteristics a vibration induction transducer for magnetic flaw detection. Izmeritel`naya Tekhnika. 2022;(10):37-43. (In Russ.) https://doi.org/10.32446/0368-1025it.2022-10-37-43
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