Special Topics in Structural Dynamics & Experimental Techniques, Volume 5: Proceedings of the 42nd IMAC, A Conference and Exposition on Structural Dynamics, 2024, 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: Active Control Experimental Techniques Finite Element Techniques Multifunction Structures System Identification Additive Manufacturing Rotating Machinery.