Dynamic Substructuring & Transfer Path Analysis, Volume 4: Proceedings of the 43rd IMAC, A Conference and Exposition on Structural Dynamics, 2025, the fourth volume of twelve from the Conference brings together contributions to this important area of research and engineering.

1 Modal Vibration Testing of a Frame and Wing Structure

Joshua E. Blackham and Matthew S. Allen

2 Toward 3D Experimental Impulse-Based Substructuring Using the Virtual Point Transformation

Oliver M. Zobel, Francesco Trainotti, and Daniel J. Rixen

3 A Look at Overfitting in Source Estimation Problems

Steven Carter

4 A Numerical Decoupling of a Wing Together with Two Nonlinear Radius-pylons, from the Technical Division’s Substructuring Four-unit Frame Structure

A. Linderholt, B. Moldenhauer and D. Roettgen

5 Finite Element Modeling and Substructuring to Simulate Shock Plate Testing

Harrison C. Denning, Scott Tuley, Matthew S. Allen, Jeffrey R. Hill, and Daniel R. Roettgen

6 Condition Monitoring for the Mounts of a Simple Supported Beam Using Transfer Path Analysis

Michael Kreutz and Daniel J. Rixen

7 Frequency Response Function Expansion using a Symmetry Preserving Gysin Expansion Technique

Christopher Page and Peter Avitabile

8 Cutting Force Estimation in Sensor-Equipped Metal Cutting Tools Using Strain-Force Transfer Function

Wu Peng, Anders Liljerehn, Martin Magnevall, and Dan O¨ stling

9 Enhanced Mode Selection in Modal Domain Substructuring on the Round Robin Structure

Jure Korbar, Miha Pogacˇr, and Gregor Cˇepon

10 Investigation of the Use of Commercial Robotic Arms for Real-Time Hybrid Substructuring

Arian Kist, David Stadler, Rok Belˇak, Vasja Plesec, Timi Karner, Gregor Harih and Daniel Rixen

11 Model Initialization in Real Time Hybrid Testing for Experimental Detection of Isolated Branches

A. Mario Puhwein and Markus J. Hochrainer

12 Extrapolating Dynamic Transfer Functions from Multi-Input Multi-Output Vibration Testing and Simulation

E. J. Perez, E. E. Regula, C. J. Wynn, J. D. Blessinger, J. L. Davis, E. P. Dawson, and S. J. Zimmerman

13 Revisiting the Dual Admittance-Based Quasi-Static Formulation for the Identification of Linear Joint Dynamics with Dynamic Substructuring

Francesco Trainotti, M. Brons, S. Klaassen, D. J. Rixen

14 On the Use of Frequency-Dependent Modal Basis for Interface Modeling in Frequency-Based Substructuring

Domen Ocepek, Miha Pogacˇr, Jure Korbar, and Gregor Cˇepon

15 Assessing the Importance of Contact Joints Relative to Other Sources of Uncertainty in Dynamic Substructuring

Samuel Choi, Manuel Vega, Tyler Alvis, and Teresa Portone

16 High-frequency Dynamic Characterization of Rubber Mounts through an Enhanced Virtual Point Transformation

Bart Forrier, Fabio Bianciardi, and Karl Janssens