Brincker Monitoring is using Operational Modal Analysis (OMA) to perform structural health monitoring (SHM)

OMA is a technique used to identify a structure’s dynamic properties, like natural frequencies, damping ratios, and mode shapes, by analysing its response to ambient or operational excitations. Unlike traditional modal analysis, OMA doesn’t require controlled input forces, making it suitable for large structures where applying artificial excitation is difficult. OMA relies on measuring the structure’s response to unknown forces like wind, waves, or traffic. This output-only approach is valuable for SHM, model updating, and understanding a structure’s behaviour under real-world conditions.