Railway

ICR has achieved an important position as a acoustic engineering in the railway acoustic engineering sector in the last decade. We have gained the confidence of the main European train manufacturers for many reasons.

Work procedure

ICR has developed a work methodology which is based on own prediction methods, noise measurements of real operating conditions (this reduces the need for many theoretical assumptions), our capacity to analyse both the air-borne noise and the structure-borne noise contributions from each coach element (subsystem) and finally, our very short response time combined with really low prices.

An immediate consequence of the above mentioned points is that our work finishes neither with just a simple noise prediction nor with the specification of some design modifications. The final result of our methodology is always the passing on of the know-how to the train manufacturer. This knowledge can then be introduced into the production cycle and be used for the next generation of trains.

Services

ICR has developed this working method based on its experience and its Research and Development resources so as to be able to offer the best services to its clients.

Some of these services are:
 
  • Analyis of the transmission paths of noise and vibrations (TPA and ATPA).
  • Measurements taken in the interior of the train of the vibro-acoustic contributions of each element of the train to the interior levels.
  • Measurement of the vibro-acoustic contribution of auxiliary equipment to the interior noise level of the train.
  • Influence of the airflow separation to the interior noise level.
  • Influence of the pressure of the turbulent boundary layer to the interior noise level.
  • Theoretical and experimental models to predict the rolling noise level.
  • Theoretical and experimental models to predict the compression wave gererated by a high speed train entering a tunnel.
  • Theoretical and experimental models to predict the squeal noise level.
  • Theoretical and experimental models to predict the impact noise level.
  • Theoretical and experimental models to predict the aerodynamic noise level of high speed trains.
  • Development of custom software for vibro-acoustic analysis.
  • Computational Fluid Dynamics(CFD).
  • Computational Aero Acoustics(CAA).
  • Dynamic and vibro-acoustic calculations using FEM and BEM.
  • Prediction of the environmental impact caused by the noise of a passing train.
  • Customised mufflers and acoustic solutions.
  • ...
 

ICR is an Acoustic Engineering resolving problems of noise and vibrations. ICR works for the railway, car, industry, construction and environmental sectors. The company researches (R+D) new methods to solve vibroacous-tic problems. ICR also designs software for quality control and transmis-sion loss and teaches acoustics to private companies and official colleges.
Ingenieria para el Control del Ruido – Barcelona.

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