 Okay, then then welcome back to the working group two session of this afternoon and Before starting the presentations I would just like to give a brief overview of the past activities of the of the working group and what is expected Yeah, according to the memorandum of understanding So objective of this working group was to get a categorization of the available as HM technologies in regard to the measured quantities and The related structural performance So girl was also to formulate a link between the measured quantities and the structural performance of interest With consistent treatment of uncertainties and for the for diverse application areas so milestone as the publication of the Categorization and information modeling as a cost report at the end of this year In order to do that we developed a scheme to position the various aspects of SHM strategies and structural performance in relation to life cycle asset management Because we have many different contributions. There are many different perspectives many different as HM technologies different performance indicators for different structural types and with with that scheme while we can have a collective view of Presenting the diverse work that we have in this working group in a general context and also showing the different ways to link SHM with different aspects of performance So here's the here is that scheme where we have Yeah, different performance Concepts different performance indicators that go with these performance concepts Measurements observations that we get from our SHM technologies this everything in relation to the different structural types for which we have had presentations also and How this all goes together then into decision and actions for life cycle assessment The blue arrows that we have here. They refer mainly down to methods and tools that are in link with working group three So our activities until now we have had presentations at all the workshops I think the slides are available on the cost website for these workshops out of these presentations We've got a couple of papers and fact sheets Some of them are already available on the cost website the fact sheets will be published soon, I guess and We've also organized a mini symposium at the European workshop of structural health monitoring where we had 15 contributions from cost participants and also external contributors to disseminate What we've been doing in the cost action So we got a couple of papers And a couple of fact sheets that covered Yeah, different structural types. So we have Bridges performance on bridges on masonry structures dams Etc. We have different Monitoring techniques from vibration monitoring corrosion monitoring Thermal monitoring way in motion and traffic Monitoring and yeah other different aspects Up so these are the presentations for today So I would like to give the bird to Jan Winkler for structural health monitoring using digital image correlation So, please go ahead