Surface Integrity Assessment Upon Electric Discharge Machining of Die Steel Using Non-Destructive Magnetic Barkhausen Noise Technique

2020 ◽  
Vol 73 (4) ◽  
pp. 967-974
Author(s):  
Binayaka Nahak ◽  
Ashish Srivastava ◽  
M. Z. Khan Yusufzai ◽  
Meghanshu Vashista
Keyword(s):  
Electric Discharge ◽  
Surface Integrity ◽  
Barkhausen Noise ◽  
Magnetic Barkhausen Noise ◽  
Electric Discharge Machining ◽  
Die Steel ◽  
Integrity Assessment ◽  
Non Destructive

Testing of Hardness on Long Rail Welded Joint by Means of Magnetic Barkhausen Noise Technique

2014 ◽  
Vol 490-491 ◽  
pp. 351-357
Author(s):  
Liang Yin ◽  
Di Shu ◽  
Juan Chen ◽  
Xin Qi
Keyword(s):  
Welded Joint ◽  
Brinell Hardness ◽  
Surface Hardness ◽  
Barkhausen Noise ◽  
Non Destructive Testing ◽  
Magnetic Barkhausen Noise ◽  
Destructive Testing ◽  
Testing Technique ◽  
Non Destructive ◽  
Microstructure Of The Material

The experiment shows that the Magnetic Barkhausen Noise (MBN) signal strongly depends on the elastic deformation, heat treatment state of surface and microstructure of the material, etc. Using the MBN technology that rely on the material characteristics, MBN can be used for testing the surface hardness of 60kg/m U74 seamless rail made by China Harbin welded rail plant. And the testing result obtained by the MBN method is consistent with the results obtained by the Brinell hardness (HB) method. Consequently, this non-destructive testing technique will have a strong life and an extensive market.

scholarly journals Optimisation of amplitude distribution of magnetic Barkhausen noise

2017 ◽  
Vol 68 (5) ◽  
pp. 384-389
Author(s):  
Jozef Pal’a ◽  
Vladimír Jančárik
Keyword(s):  
Measurement Method ◽  
Measurement Accuracy ◽  
Amplitude Distribution ◽  
Barkhausen Noise ◽  
Significant Issue ◽  
Magnetic Barkhausen Noise ◽  
Non Destructive Evaluation ◽  
Treatment Conditions ◽  
Lift Off ◽  
Non Destructive

Abstract The magnetic Barkhausen noise (MBN) measurement method is a widely used non-destructive evaluation technique used for inspection of ferromagnetic materials. Besides other influences, the excitation yoke lift-off is a significant issue of this method deteriorating the measurement accuracy. In this paper, the lift-off effect is analysed mainly on grain oriented Fe-3%Si steel subjected to various heat treatment conditions. Based on investigation of relationship between the amplitude distribution of MBN and lift-off, an approach to suppress the lift-off effect is proposed. Proposed approach utilizes the digital feedback optimising the measurement based on the amplitude distribution of MBN. The results demonstrated that the approach can highly suppress the lift-off effect up to 2 mm.

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