Micromechanics-based Elastoplastic Damage Modeling of Brittle and Ductile Composite Materials; Non-destructive Testing to Assess Damage of Concrete; Experimental Mechanics of Structural Materials; Nonlinear/linear Structural Dynamic Analysis of Structures Due to Earthquake Motions; Code-based and Performance-based Structural Design of Structures; Innovative Approaches to Seismic Retrofitting of Existing Structures