Seminar Jorge Alcalá: Multi-scale mechanistic interpretations to indentation experiments across the material length scales: from continuum to atomistics

Prof. Jorge Alcalá (Universitat Politècnica de Catalunya) We provide a fundamental contact mechanics background to the interpretation of spherical indentation experiments performed in polycrystalline aggregates, single crystalline units, thin films, and minute material scales comprising an atomistic ensemble. A central issue under examination is the extraction of mechanical properties from hardness measurements as well as from instrumented indentation applied load-penetration depth curves performed in all such material lengths. Our analyses shed light into the role of the plasticity mechanisms (dislocation slip…