USING THE VIDEOEXTENSOMETRY AND UCI - HARDNESS FOR MONITORING OF AUTOMOTIVE STEEL SHEETS
Journal Title: Materials Engineering - Materialove inzinierstvo (MEMI) - Year 2011, Vol 18, Issue 3
Abstract
The paper deals with examination of relation between the hardness and the size of plastic zone during the tensile loading. UCI (Ultrasonic Contact Impedance) micro-hardness method was used for hardness measurements. Deformation was evaluated by non-contact extensometry method – videoextensometry. The result present existence of the power lawl relation between hardness and plastic deformation: HV = HV[sub]p[/sub]+ kε[sup]α[/sup]. Hot rolled sheet and thin automotive sheet were investigated.
Authors and Affiliations
Mária Mihaliková, Miroslav Német, Pavol Zubko, Ľubomír Ambriško, Ladislav Pešek
Keywords
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