Dynamic Environments Testing, Volume 7: Proceedings of the 42nd IMAC, A Conference and Exposition on Structural Dynamics, 2024, the seventh 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 Dynamic Environments Testing including papers on: Dynamic Environment Definition and Specification Dynamic Testing Fixture Design Single Axis Shaker Testing Multi-Degree of Freedom Shaker Testing Transient Testing.