This report contains introduction to the subject as well as descriptions of the problems, a state-of-art overview, descriptions of the methods applied and of the results achieved so far. Furthermore, the report contains a plan for the remaining part of the project period. In the overall perspective, the project combines many different engineering disciplines and thus the report displays a variety of content. The reliability theory ties the different disciplines together, and the focus is chosen on the dominant uncertainties of the modal damage detection as a consequence barrier (risk reduction by decision rule), as the initial studies in the project indicated this as an interesting and innovative approac
