20.500.12556/DiRROS-25538 Integrating distributed acoustic sensing for damage detection in old pre-stressed concrete girders preliminary experimental results In this study, we investigate the load-bearing capacity of pre-stressed concrete girders under various damage levels. We employed Distributed Acoustic Sensing (DAS) technology to monitor and quantify changes in the girder response as damage levels were incrementally introduced. This approach enabled the real-time measurement of dynamic behavior over the entire length of the girder, allowing for a detailed characterization of damage-induced structural changes. To complement the DASbased approach, we also applied classical acceleration-based damage detection techniques. By integrating these methods, we aimed to cross-validate the results and provide a more comprehensive understanding of damage progression and its impact on structural performance. The experimental campaign, conducted in Ljubljana, ZAG, involved full-scale testing of pre-stressed concrete girders subjected to controlled damage scenarios. This setup ensured a realistic assessment of the girders’ residual capacity and failure mechanisms. The paper presents preliminary results from this experimental study, emphasizing the capability of DAS measurements to detect and characterize damage, while also comparing its performance against traditional methods. By combining advanced sensing technologies with established techniques, this research highlights the potential of DAS as a transformative tool in structural health monitoring. distributed acoustic sensing distributed fiber optic sensing structural health monitoring frequency analysis load test infrastructure monitoring bridge monitoring porazdaljeno akustično zaznavanje porazdeljeno zaznavanje z optičnimi vlakni spremljanje stranja konstrukcij frekvenčna analiza obremenilna preizkušnja monitoring infrastrukture monitoring mostov true false true Verlag der Technischen Universität Graz Angleški jezik Slovenski jezik Neznano 2026-01-22 11:55:24 2026-01-22 12:00:11 2026-01-24 03:41:36 0000-00-00 00:00:00 2025 0 0 Str. 118-123 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2025-09-06 624 10.3217/978-3-99161-057-1 259851267 256692995 https://doi.org/10.3217/978-3-99161-057-1-021 0 dc972531-f780-11f0-a15d-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=38719 RAZ_Strasser_Lisa_2025.pdf RAZ_Strasser_Lisa_2025.pdf 1 F7245E1908662AC2C1F61618C6A09E06 c205be743333762feeebf05940d0b26ffcd108e0286916dd7d917ac3df35b5ee 819cbb3e-f781-11f0-a15d-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=38720 Zavod za gradbeništvo Slovenije 0 0 0