Correlation between material properties, grinding effects and Barkhausen noise measurements for two crankshaft steels

Examensarbete för masterexamen

Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12380/164652
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Type: Examensarbete för masterexamen
Master Thesis
Title: Correlation between material properties, grinding effects and Barkhausen noise measurements for two crankshaft steels
Authors: Doverbo, Marie
Abstract: The crankshaft steel of two suppliers has been shown to yield differing Barkhausen measurements despite corresponding material specifications and identical manufacturing. In this thesis the reason for this discrepancy is investigated and an hypothesis regarding its cause is formulated. The conclusions are reached through experimental work, wherein the material properties of the two steels are compared. The difference in ductility is related to the difference in Barkhausen Noise Amplitude (BNA) through the grinding process such that the increased ductility is believed to increase the chip build up in the grinding wheel, thus resulting in higher grinding temperature. This would increase the risk for grinding burns and moves the residual stresses towards tensile, which changes the BNA. Suggestions for future work all concern the verification of this hypothesis.
Keywords: Materialteknik;Metallurgi och metalliska material;Materialvetenskap;Produktion;Materials Engineering;Metallurgy and Metallic Materials;Materials Science;Production
Issue Date: 2012
Publisher: Chalmers tekniska högskola / Institutionen för material- och tillverkningsteknik
Chalmers University of Technology / Department of Materials and Manufacturing Technology
Series/Report no.: Diploma work - Department of Materials and Manufacturing Technology, Chalmers University of Technology
URI: https://hdl.handle.net/20.500.12380/164652
Collection:Examensarbeten för masterexamen // Master Theses



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