Análisis acústico del uso de neumáticos reciclados en vías férreas = Acoustic analysis of the use of recycled tires on railways.

This research consists of the development of a novel elastomeric material manufactured from tyre recycling. This material is used as a vibration attenuator in systems commonly used in railway lines. Once the static rigidity of the system was defined and elastic componennts of the assembly were characterized, four full-scale prototypes were manufactured for validate their acoustic behavior. After tests carried out, it is observed that this material undergoes a process of flexibility, instead of the usual stiffening process in synthetic rubbers, due to the fatigue-derived effects. The numerical results confirm the feasibility of this new eco-material for use as a vibration attenuator on railway lines.