Dynamics of Civil Structures, Volume 2: Proceedings of the 43rd IMAC, A Conference and Exposition on Structural Dynamics, 2025, the second volume of twelve 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 the Dynamics of Civil Structures, including papers on:Structural VibrationDynamics of Bridges, Buildings, and Infrastructure SystemsInnovative Sensors and Measurement Techniques for Structural ApplicationsStructural Control and Vibration MitigationHuman Induced Vibrations and Human-Structure InteractionModal Identification of Structural SystemsHuman Health Monitoring Using Structural SensingField Monitoring of Vibrations
1 Ambient Vibration Testing and Modal Response Analysis of a Curved Concrete Bridge Mehrtash Motamedi, Carlos E. Ventura, and Brook Robazza2 Response Modification of Structures with Supplemental Rotational Inertia Nicos Makris and Gholamreza Moghimi3 Effect of Bottom Flange Angle Blocking on the Dynamic Response of Two All-Steel Laboratory Floors Sahabeddin Rifai, Rajshri Chidambaram Muthu Kumar, Feras Abla, Ahmad Rababah, Onur Avci, Matthew R. Eatherton, and Benjamin W. Schafer4 Modal Testing and Finite Element Model Updating of a FastFloor Specimen: A Modular All-Steel Floor SystemSahabeddin Rifai, Rajshri Chidambaram Muthu Kumar, Onur Avci, Benjamin W. Schafer, Matthew R. Eatherton, W. Samuel Easterling, and Jerome F. Hajjar5 IMAC 2025 Modal Expansion of Mixed-Domain Vibration Response Using Neuromorphic Event-based Imaging Data Gabriella Gallegos, Tessa Lytle, Deborah Fowler, Fernando Moreu, Ryan Schultz, Chandler Smith, Timothy Walsh, and Tariq Khraishi6 Damage Identification Strategy in Time-Varying Dynamic Systems Combining Cepstral and Image-Based FeaturesSina Shid-Moosavi, Costanza Speciale, and Eleonora Maria Tronci7 Experimental Comparison of Feedback Control Methods for Active Vibration Damping with Piezoelectric Sensor/Actuator Pairs Amirali Sadeqi, Jan Hogsberg, Niels L. Pedersen, and Ayech Benjeddou8 Initial Validation of a Novel Output-to-Output FrequencyResponse Function Mapping Method for Impact Localization in Dispersive Media Andrew T. Gothard and Steven R. Anton9 Reduced Order Model Efficiency for Structural Health Monitoring using Modal Data: A Case Study of Milad Tower Akbar Esfandiari, Maryam Vahedi, Saeed Behboodi, and Masoud Sanayei10 Vibration Serviceability Evaluation of an All-Steel FloorSystem using the High-Frequency Floor ProcedureSahabeddin Rifai, Feras Abla, Ahmad Rababah, Rajshri Chidambaram Muthu Kumar, Benjamin W. Schafer, Matthew R. Eatherton, and Onur Avci11 It’s All About That Bass! Isolating For Low-Frequency Ground-Borne Vibrations Michael J. Wesolowsky, Rabih Alkhatib, Brad Pridham, Muhammad Rahman, and Ali Siami12 Machine Learning based Automated Operational Modal Analysis for monitoring of large infrastructure Andr’e Tavares, Susana Dias, Marco Barreira, Emilio Di Lorenzo, Bram Cornelis, Bart Peeters, Carlos Moutinho, Filipe Magalh˜aes, Wim Desmet, and Konstantinos Gryllias13 CharacterizingWalking Loads based on Force Measurements on Lightweight Pedestrian Bridges Ghaffarian Dallali Elyar and Dey Pampa14 Design and Demonstration of an Improved Optical Multiplexer for Vision-based Vibration Monitoring of Civil Structures Matthew Whelan, Youngjin Park, and Timothy Kernicky15 LSTM NARX as Emulator for Finite Element Models of Nonlinear Structural Dynamic Systems: From Time-Series Input Vectors to Time-Series Output Vectors Abdoul Aziz Sandotin Coulibaly, Zhen Hu, and Joel P. Conte16 Pre-existing Telecommunication Optical Fiber Cables for Characterizing Bridge Modal Frequency with Temperature Variation Jatin Aggarwal, Doyun Hwang, Jingxiao Liu, Biondo Biondi, and HaeYoung Noh17 BodyWeight Estimation through Bed Structural VibrationsYuyan Wu, Jiale Zhang, Moon Lee, Cherrelle Smith, Pei Zhang, and Hae Young Noh