Henry L. Pierce Laboratory Seminar Series with Prof. Babak Moaveni
Wednesday, October 24, 2018 at 4:00pm to 5:00pm
Health Monitoring of Civil Structures:Challenges in Real-World Applications
Structural identification methods using sensor data have received increased attention in the civil engineering research community with the objective of assessing structural performance, and evaluating the remaining useful life of structures. While many researchers have successfully applied various approaches to numerical and/or small-scale laboratory models of structures, the literature lacks many successful applications to large‐scale civil structures under real loading environment. This study highlights the challenges of implementing structural health monitoring methods for applications to large‐scale civil structures, especially when dealing with uncertainty. A hierarchical Bayesian framework is presented for probabilistic model updating and damage identification. It is shown that the proposed hierarchical framework allows to explicitly account for pertinent sources of variability such as ambient temperature and/or excitation amplitude and therefore yields more accurate predictions. The presentation also highlights the value of using complementary data such as point cloud data in addition to vibration measurements for structural performance assessment. The point clouds are informative about identification of cracks at their early stages while the vibration data provide measure of stiffness at later stages of damage. The presentation shows application of the proposed approaches on three large-scale reinforced concrete building structures.
Dr. Moaveni is an Associate Professor at the Department of Civil and Environmental Engineering at Tufts University. He obtained his PhD in Structural Engineering from University of California San Diego, M.S. in Earthquake Engineering and B.S in Civil Engineering both from Sharif University of Technology. His research interests include vibration-based structural health monitoring, system and damage identification of civil structures, uncertainty quantification, and verification and validation of computational models. He is currently serving as the chair of Structural Health Monitoring and Control Committee of the American Society of Civil Engineers (ASCE) and as the associate editor for Structural Health Monitoring and Frontiers in Built Environment journals.