Post by Blasius Buchegger

🚆📊 𝐒𝐮𝐜𝐜𝐞𝐬𝐬𝐟𝐮𝐥 𝐌𝐞𝐚𝐬𝐮𝐫𝐞𝐦𝐞𝐧𝐭 𝐂𝐚𝐦𝐩𝐚𝐢𝐠𝐧𝐬 𝐨𝐧 𝐭𝐡𝐞 𝐌𝐚𝐭𝐭𝐞𝐫𝐡𝐨𝐫𝐧 𝐆𝐨𝐭𝐭𝐡𝐚𝐫𝐝 𝐑𝐚𝐢𝐥𝐰𝐚𝐲! 🛠️ Each in June 2025 and in September 2024, I led measurement campaigns on curve squealing, where I took responsibility for the planning, coordinated the activities and carried out plausibility checks as well as initial analyses during the measurements. Currently, my colleagues and I are working on the detailed investigation of the extensive measurements 📈🔍 🤝 The 𝐭𝐰𝐨 𝐦𝐞𝐚𝐬𝐮𝐫𝐞𝐦𝐞𝐧𝐭 𝐜𝐚𝐦𝐩𝐚𝐢𝐠𝐧𝐬 were in collaboration of Virtual Vehicle Research GmbH with RAILplus AG, AC2T research GmbH, The University of Sheffield and DB Systemtechnik. We worked on to the Matterhorn Gotthard Bahn between Täsch and Visp in Switzerland. Each a week for both campaigns, the teams worked to conduct amongst others: 1.) 𝐓𝐫𝐚𝐢𝐧 𝐩𝐚𝐬𝐬-𝐛𝐲 𝐦𝐞𝐚𝐬𝐮𝐫𝐞𝐦𝐞𝐧𝐭𝐬 𝐢𝐧𝐜𝐥𝐮𝐝𝐢𝐧𝐠 💠 Noise and vibration measurement during curve squealing for different operational situations and environmental conditions using microphones and acceleration sensors on rails and sleepers 💠Measurement of the lateral wheel/rail contact position in the curve 💠Time synchronized measurements both on vehicle and track to determine longitudinal creepage in a well-defined cross-section of the curve 2.) 𝐈𝐦𝐩𝐚𝐜𝐭 𝐡𝐚𝐦𝐦𝐞𝐫 𝐭𝐞𝐬𝐭𝐬 𝐨𝐧 𝐫𝐚𝐢𝐥𝐰𝐚𝐲 𝐭𝐫𝐚𝐜𝐤𝐬 𝐚𝐧𝐝 𝐭𝐫𝐚𝐢𝐧 𝐰𝐡𝐞𝐞𝐥𝐬 to determine their structural dynamic behaviour and allow development and calibration of simulation models 3.) 𝐆𝐞𝐨𝐦𝐞𝐭𝐫𝐢𝐜𝐚𝐥 𝐬𝐜𝐚𝐧𝐬 of wheel- and rail profiles and 𝐚𝐜𝐨𝐮𝐬𝐭𝐢𝐜 𝐫𝐨𝐮𝐠𝐡𝐧𝐞𝐬𝐬 𝐦𝐞𝐚𝐬𝐮𝐫𝐞𝐦𝐞𝐧𝐭𝐬 on the rail 4.) 𝐅𝐫𝐢𝐜𝐭𝐢𝐨𝐧 𝐜𝐨𝐞𝐟𝐟𝐢𝐜𝐢𝐞𝐧𝐭 𝐦𝐞𝐚𝐬𝐮𝐫𝐞𝐦𝐞𝐧𝐭𝐬 during application of top of rail - 𝐟𝐫𝐢𝐜𝐭𝐢𝐨𝐧 𝐦𝐨𝐝𝐢𝐟𝐢𝐞𝐫 and 𝐢𝐭𝐬 𝐢𝐧𝐟𝐥𝐮𝐞𝐧𝐜𝐞 𝐨𝐧 𝐬𝐪𝐮𝐞𝐚𝐥𝐢𝐧𝐠 5.) 𝐃𝐮𝐫𝐢𝐧𝐠 𝐨𝐩𝐞𝐫𝐚𝐭𝐢𝐨𝐧, measurement of parameters like 𝐚𝐧𝐠𝐥𝐞 𝐨𝐟 𝐚𝐭𝐭𝐚𝐜𝐤, 𝐯𝐞𝐫𝐭𝐢𝐜𝐚𝐥 𝐚𝐧𝐝 𝐥𝐚𝐭𝐞𝐫𝐚𝐥 𝐟𝐨𝐫𝐜𝐞𝐬 𝐚𝐜𝐭𝐢𝐧𝐠 𝐨𝐧 𝐭𝐡𝐞 𝐫𝐚𝐢𝐥, 𝐚𝐧𝐝 𝐬𝐞𝐯𝐞𝐫𝐚𝐥 𝐦𝐨𝐫𝐞 The data gathered will play a key role in developing simulation models and effective countermeasures to mitigate curve squealing, static wear, rail corrugation and wheel polygonization 🔄🛤️ Thanks a lot especially to Aaron Seeberger, Jackson Buckner, Roland Müller, Nikolaus Ritter, Gaël Vuillème, Matthias Freisinger, Ben White, Simon Töpfer, Jörg M. Reinecke, Thomas Kolbe, Michael Watson, Thao Nhi La, Taha Benli, Karim-Alexandre Fischer, Mahdiyar N.H.Gilani, PhD, Johann Payer, Felix Platzer, Bernhard Zeller and Eugène Nijman for the great collaboration. This work was carried within the project “𝐅𝐅𝐈-𝐎𝐩𝐭 (𝐕𝐞𝐫𝐛𝐞𝐬𝐬𝐞𝐫𝐭𝐞 𝐅𝐚𝐡𝐫𝐳𝐞𝐮𝐠-𝐅𝐚𝐡𝐫𝐰𝐞𝐠 𝐈𝐧𝐭𝐞𝐫𝐚𝐤𝐭𝐢𝐨𝐧 𝐢𝐦 𝐁𝐞𝐫𝐞𝐢𝐜𝐡 𝐌𝐞𝐭𝐞𝐫𝐬𝐩𝐮𝐫𝐛𝐚𝐡𝐧𝐞𝐧)", supported by RAILplus AG, Stadler Rail Group, Lucchini RS, voestalpine Railway Systems GmbH. #MeasurementCampaign #RailPlus #VirtualVehicle