This paper reviews stochastic system identification methods that have been used to estimate
the modal parameters of vibrating structures in operational conditions. It is found that many …

It is a well-known fact that linear dynamic behavior of structures can be studied by modeling
the relation between force (s)[input (s)], acting on a structure, and their resulting structural …

In the past few years, in-operation modal analysis has become a valid alternative for
structures where classic forced vibration tests would be difficult, if not impossible, to conduct …

Recently the superior performance of the PolyMAX modal parameter estimation method
using frequency response functions was demonstrated. The method can be implemented in …

A multivariable frequency-domain maximum likelihood estimator is proposed to identify the
modal parameters together with their confidence intervals. The algorithm has been …

Experimental modal analysis has become a commonly-used technique for studying the
dynamical behaviour of mechanical and civil structures, such as for example cars, aircrafts …

During a football game, the ambient vibrations at the roof of a football stadium were
recorded. A very large data set consisting of 4 hours of data, sampled at 80 Hz, is available …

Operational modal analysis (OMA) is based on the assumption that the forces on the
structure are the result of a stochastic process, so being white noise. In practice, however …

This paper presents the earthquake response of a historical masonry minaret after a finite
element model updating was undertaken using the information from full scale ambient …

In this paper a vibration-based approach to identify a crack in a wind turbine blade is
described and demonstrated numerically and experimentally. Operational modal analysis …