Abstract

The paper presents the analysis of the results of plastic deformation zones obtained by the ball indentation into the surface of a non-magnetic metal plate using the amplitude-sensitive eddy current method. Calculation and experimental methods were used in the research. A two-dimensional finite-element model of an eddy current probe installed above a local plastically deformed zone on the metal plate surface was developed. The finite-element modelling of the electromagnetic field of eddy currents induced in the aluminium plate during multi-frequency excitation was made. It is found that the amplitude-sensitive eddy current method is appropriate not only to estimate the plastic deformation zone propagation depth, but also to detect a zone with the maximum stress values beneath the indent (hydrostatic core zone). An experimental verification of the proposed model was done. The specific zones in the deformed metal beneath the indent were detected by the eddy current method and the hydrostatic core size was evaluated.

Details

Title
The amplitude-sensitive eddy current method for investigation of the plastically deformed metal zone beneath the indent obtained by ball indentation
Author
Zhgut, D A 1 ; Khvostov, A A 1 ; Chernova, E A 1 ; Chernov, D V 2 ; Marchenkov, A Y 1 

 Moscow Power Engineering Institute, 14 Krasnokazarmennaya ul., Moscow, 111250, Russia 
 Mechanical Engineering Research Institute of RAS, 4 Maly Kharitonyevsky per., 101000, Moscow, 101000 Russia 
Publication year
2020
Publication date
Sep 2020
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2570984950
Copyright
© 2020. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.