Plastic Deformation: Compression and Hardness Testing

This lecture covers the plastic deformation in compression testing, discussing the effect of friction on lubricated surfaces and the critical buckling stress. It also explores the advantages and disadvantages of compression testing compared to tension testing, as well as the analysis of hardness testing techniques such as Brinell, Vickers, and Knoop. The lecture delves into the prediction of stress-strain curves, crystal defects, and the energy dissipated during plastic deformation. Additionally, it examines the principles of micro-hardness tests and the significance of indentation curves in determining mechanical properties.