Operational Modal Analysis on a Tied-Arch Railway Bridge: A case study to determine the natural frequencies and mode shapes from in-situ accelerational measurements

Due to increasingly efficient engineering of the last decades, the design process for civil structures is heading in the direction of optimal solutions. Among other things, the reduction in self-weight enhances the susceptibility to dynamic loads. As the process for the determination of realistic modal parameters from a digital model often...

Vibration-based Monitoring of the Zwartewaterbrug: a Machine Learning Approach

In the Netherlands there are many bridges that crosses waterways, which are key nodes in the transportation system. The safety and integrity of these bridges is nowadays assessed by (visual) inspections at regular intervals. This approach cannot provide information about damage development in between inspections, leading to potential failure or...

A Benchmark Study on Operational Modal Analysis System Identification Algorithms for Operating Offshore Wind Turbines

Recently, Offshore Wind Turbines (OWT) have attracted great attention in an effort to make a shift from fossil-based energy sources towards an enhanced sustainable and renewable energy production. In order to achieve the renewables targets and reduce the cost of wind energy, OWTs are consistently increasing in size. Therefore, research has...