System-integrated and load dependent evaluation of long-term reliability of high-speed turnouts
Abstract
Objective of the Project is the system-integrated and load dependent evaluation of the long-term reliability of high-speed turnouts, with focus on crack initiation and growth from the rail foot of moveable crossing points. The Project focuses on the development of a detailed understanding of the dynamics of the complete non-linear system comprising “wheelset – rail – slab track – soil”, capturing on one hand the influence of slab, concrete asphalt mortar and soil stiffness, and on the other hand the low-amplitude, high-cycle vibrations from wheel-rail contact on the loading of the switch rails. Ultimately, the cornerstones for an integrated maintenance concept for high-speed crossings should be provided. The Present Project itself is part of the jointly defined Research Programme of the COMET K2 Center on “Integrated Computational Material, Process and Product Engineering (IC-MPPE)” and supports reaching the goals defined in this Research Programme. The contribution by BOKU-IPM is to characterise the properties of R260 steel under cyclic loading in the very high cycle fatigue regime.
keywords Fatigue Limit Very High Cycle Fatigue High-speed Turnouts Defekt Tolerance
Publikationen
High and very high cycle fatigue properties of pearlitic rail steel R350HT
Autoren: Schönbauer, BM; Sistaninia, M; Maierhofer, J; Gänser, H-P; Pippan, R; Mayer, H Jahr: 2023
Conference & Workshop proceedings, paper, abstract
The behavior of crack initiation in high-cycle and very-high-cycle fatigue regimes for a high-strength steel
Autoren: Sistaninia, M; Schönbauer, BM; Maierhofer, J; Cordill, M; Pippan, R Jahr: 2023
Conference & Workshop proceedings, paper, abstract
Project staff
Bernd Schönbauer
Dipl.-Ing. Dr.techn. Bernd Schönbauer
bernd.schoenbauer@boku.ac.at
Tel: +43 1 47654-89216
Project Leader
01.01.2021 - 31.12.2023
Herwig Mayer
Ao.Univ.Prof. Dipl.-Ing. Dr. Herwig Mayer
herwig.mayer@boku.ac.at
Tel: +43 1 47654-89202
Project Staff
01.01.2021 - 31.12.2023