TY - CONF A1 - Lenke, Philipp A1 - Liehr, Sascha A1 - Krebber, Katerina A1 - Weigand, F. A1 - Thiele, E. T1 - Distributed strain measurement with polymer optical fiber integrated in technical textiles using the optical time domain reflectometry technique T2 - Proceedings of the 16th international conference on plastic optical fibers N2 - The presented research is carried out on the background of the development of a new strain sensor, integrated in technical textiles using the optical time domain reflectometry (OTDR) technique. We investigated the effect of increased scattering in POF due to applied strain as a distributed sensor including research on long-term stability and reliability of this sensor. T2 - 16th International Conference on Plastic Optical Fibers (POF 2007) CY - Turin, Italy DA - 2007-09-10 PY - 2007 SP - 21 EP - 24 PB - International Cooperative of Plastic Optical Fibers (ICPOF) CY - Turin, Italy AN - OPUS4-16435 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Lenke, Philipp A1 - Krebber, Katerina A1 - Muthig, M. A1 - Weigand, F. A1 - Thiele, E. ED - W. Ostachowicz, ED - J. Holnicki-Szulc, ED - C. Mota Soares, T1 - Distributed strain measurement using polymer optical fiber integrated in technical textile to detect displacement of soil T2 - Smart structures and materials : III ECCOMAS thematic conference N2 - Sensing characteristics of polymer optical fibers (POF) are studied using the optical time-domain reflectometry technique. For the first time to our knowledge, investigations are carried out with respect to integration of POF in technical textiles for distributed measurement of mechanical deformation. The research on this new sensor type focuses on its application in monitoring of geotechnical structures such as railway embankments, dikes, slopes and dams. We report on a distributed sensor system using POF integrated in technical textiles as sensing elements for measurement of displacement of soil. This sensor system is very robust – it withstands the integration under rough condition at a construction site – and can detect strain of more than 40 % over distances of more than 100 meters. T2 - 3. ECCOMAS Thematic Conference on Smart Structures and Materials CY - Gdansk, Poland DA - 2007-07-09 KW - OTDR KW - Strain sensor KW - Distributed sensing KW - Fiber optic sensor KW - POF sensor KW - Technical textile KW - Geotextile PY - 2007 SN - 978-83-88237-03-4 IS - Paper 03 SP - 1 EP - 8 PB - Institute of Fluid-Flow Machinery CY - Gda´nsk AN - OPUS4-16437 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Fuggini, C. A1 - Zangani, D. A1 - Wosniok, Aleksander A1 - Krebber, Katerina A1 - Franitza, P. A1 - Gabino, L. A1 - Weigand, F. T1 - Innovative approach in the use of geotextiles for failures prevention in railway embankments T2 - Transportation Research Procedia N2 - Maintenance and renewal costs of a typical railway, track and substructure represents 50–60% of the total costs of such infrastructure over its entire service life. Innovations in track and substructure are therefore fundamental to achieve a significant impact on the overall cost reduction for the railways. Therefore new solutions for track improvements that are effective and that can minimize the interruption of traffic are needed. Moreover, failures of railway embankments happened recently in different regions of the world. Such events, such as the one happened in UK in February 2013 (http://www.bbc.co.uk/news/uk-england-south-yorkshire-21441070), are showing the importance of monitoring track and infrastructure coupled with the use of numerical models for the localization of the critical areas and the design of appropriate countermeasures. Indeed embankment failures, landslides and uneven settlements and similar events are becoming much more common than in the past due to climate changes, and this requires the infrastructure managers to look from a different perspective infrastructure maintenance issues. What was previously consider as “extreme” is now “common” and thus actions need to be taken to be ready when such events will happen. The aim is to mitigate their effects on the infrastructure and to minimize disruptions to train services and reduce maintenance costs to restore the normal service conditions. If this mental change happens, then the need for solutions and techniques for global asset monitoring and ground stabilization will probably increase. Among the others, geotextiles and geogrids for soil reinforcement used in combination with condition monitoring techniques have the potential for minimizing catastrophic events, whilst at the same time providing a good balance among costs and benefits (i.e. sustainability). The paper describe a case study where the use of multifunctional geotextiles, able to provide both strengthening and monitoring functions, has been tested along a railroad near the city of Chemnitz (Germany). The results are here reported to show the potential use and the innovative aspect of this solution. T2 - 6th Transport Research Arena (TRA) CY - Warsaw, Poland DA - 18.04.2016 KW - smart geotextile KW - failure prevention KW - railway embankment KW - fiber optic sensor KW - distributed sensor PY - 2016 UR - https://nbn-resolving.org/urn:nbn:de:kobv:b43-379256 DO - https://doi.org/10.1016/j.trpro.2016.05.154 VL - 14 SP - 1875 EP - 1883 PB - Elsevier B.V. AN - OPUS4-37925 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -