Sensitivity factor based dynamic damage identification sara - part III

Non-destructive inspection methods are in general ordered by owners of systems, structures, bridges etc. Most of these methods are point inspection methods, that means they provide only information in discrete points in space and time. Therefore for most of these inspection methods there is a risk to not detect already damaged zones in space and time. Alternatives are structural monitoring systems. They provide data (e.g., static and dynamic mechanical quantities) in several points of a structure. They allow the assessment of the behaviour of the whole structure. Changes of the responses or the violation of threshold values reflect a process in the structure. The proposed sensitivity factor based approach can be used to assign the changes to a structural characteristics like shear weakness etc. ne developed algorithm of the proposed approach, emphasizing its characteristics with regard to the characterization of basic variables and the inclusion of the monitoring results, is presented. The selection of the sensitivity factors and the orientation of the correction process are presented. The algorithm is based on a special randomization technique which allows a very large reduction in the computational efforts and therefore the treatment of even large engineering structures