In order to supply rail vehicles that are noted for their vibro-acoustic comfort, present-day CAF projects give priority to vibro-acoustic studies which come within the earliest project design stages and are conducted right up to the on-track test stage. The information obtained from the vibro-acoustic study is extremely useful for decision making during the design stage, decisions that can have a positive affect on the vibro-acoustic features of the vehicle.
This vibro-acoustic study comprises a series of stages:
In short, the objective is to get a general idea of the acoustic performance inside the train and to make constructive recommendations directed at minimising the expected acoustic levels.
TPA tests are performed at more advanced stages of the project. These serve to study the various vibro-acoustic transmission channels present on a rail vehicle. These tests:
Studies of this type make it possible to determine those sections of the vehicle requiring action in order to improve their vibro-acoustic performance.