Assessment of Microhardness Profile in Grinding Using Barkhausen Noise Technique at Various Analysis Parameters | Zendy

Saurabh Kumar | Zendy; Mukesh Kumar Yadav | Zendy; Prateek Agrawal | Zendy; Mohd Zaheer Khan | Zendy; Meghanshu Vashista | Zendy

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Assessment of Microhardness Profile in Grinding Using Barkhausen Noise Technique at Various Analysis Parameters

Author(s) -

Saurabh Kumar,

Mukesh Kumar Yadav,

Prateek Agrawal,

Mohd Zaheer Khan,

Meghanshu Vashista

Publication year - 2011

Publication title -

isrn materials science

Language(s) - English

Resource type - Journals

eISSN - 2090-6099

pISSN - 2090-6080

DOI - 10.5402/2011/525078

Subject(s) - barkhausen effect , indentation hardness , materials science , grinding , barkhausen stability criterion , root mean square , noise (video) , signal (programming language) , composite material , metallurgy , microstructure , electrical engineering , engineering , physics , magnetization , image (mathematics) , quantum mechanics , artificial intelligence , magnetic field , computer science , programming language

An experimental investigation was carried out to study the effect of variation in Barkhausen noise (BN) analysis parameters (magnetizing voltage and excitation frequency) for assessment of microhardness profile upon surface grinding. A varying amount of surface damage was induced in the ground samples by changing the downfeed during grinding. It was observed that variation in microhardness inversely affects root mean square (rms) value of BN signal. The observed BN profile indicated no phase transformation or microstructural changes upon grinding. Metallographic study of ground samples has been undertaken to confirm the results obtained by BN analysis. Barkhausen noise parameter (rms value of BN signal), at elevated magnetizing voltage and excitation frequency, increased with reduction in microhardness along the depth indicating the applicability of BN analysis technique in assessing the microhardness profile of ground steel.

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