Title : ( Comparative study of eddy current and Barkhausen noise methods in microstructural assessment of heat treated steel parts )
Authors: Alireza Sahebalam , Mehrdad Kashefi Torbati , Saeed Kahrobaee ,
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Abstract
The present paper describes details of the comparison on the capability of eddy current (EC) and magnetic Barkhausen noise (MBN) techniques in the assessment of different microstructures in mild steel. To produce various microstructures, AISI 1045 steel samples were subjected to different heat treatment processes including annealing, normalising, quenching and tempering. EC outputs (induced voltage, normalised impedance and phase angle) as well as MBN outputs (peak width, position and amplitude) were evaluated. Comparing the EC/MBN outputs for the microstructures, the MBN peak characteristics show better agreement with changes in the microstructures. Besides, using regression analysis, peak width has been proved to be the optimum output to separate the microstructures with high accuracy
Keywords
magnetic Barkhausen noise; eddy current; microstructural changes; heat treatment
@article{paperid:1042539,
author = {Sahebalam, Alireza and Kashefi Torbati, Mehrdad and Saeed Kahrobaee},
title = {Comparative study of eddy current and Barkhausen noise methods in microstructural assessment of heat treated steel parts},
journal = {Nondestructive Testing and Evaluation},
year = {2014},
volume = {29},
number = {3},
month = {August},
issn = {1058-9759},
pages = {208--218},
numpages = {10},
keywords = {magnetic Barkhausen noise; eddy current; microstructural changes; heat treatment},
}
%0 Journal Article
%T Comparative study of eddy current and Barkhausen noise methods in microstructural assessment of heat treated steel parts
%A Sahebalam, Alireza
%A Kashefi Torbati, Mehrdad
%A Saeed Kahrobaee
%J Nondestructive Testing and Evaluation
%@ 1058-9759
%D 2014
