Ingénierie mécaniqueLMS

Modal acoustic radiation analysis of brake discs (Bosh)


Bosh developped a new material for the brake discs to make less noise with the same braking characteristics.

I was requested to characterize by means of an experimental modal analysis and acoustic radiation analysis 3 discs of the same shape but of different material, and to make an assesment of the dynamic damping between the 3 materials.


the 3 discs were classified qualified and classified from the least radiant/more damped to the most radiant / least damped.



  • Setup of the measurement bench with laser beam, as shown on the picture,
  • Measurements, analysis, calculation and reporting.