Application of two damage detection techniques to an offshore platform

Vibration-based methods for the inspection of offshore platforms handle the variations in natural frequencies and in the dynamic response, but they are usually not capable of distinguishing between a change in the operating condition and the onset of structural damage. This article compares results of the application to simulated data of a typical offshore structure using two recently proposed methods, a novel detection method and a singular value decomposition technique. Both methods are capable of dealing with dynamic behavioral variations induced by changes in the operational condition.