Special Topics & Experimental Techniques in Structural Dynamics, Volume 5: Proceedings of the 44th IMAC, A Conference and Exposition on Structural Dynamics, 2026, the fifth volume of ten from the Conference brings together contributions to this important area of research and engineering. The collection presents early findings and case studies on fundamental and applied aspects of Structural Dynamics, including papers on:Experimental TechniquesDynamics of Rotating MachineryMetamaterials, Metastructures and Additive ManufacturingDynamics of Biomedical and Bioinspired Systems