OROS at Automotive Techdays

The project objective is to propose a full Advanced TPA measurement and analysis solution for the Automotive industry. TPA is an experimental based method to quantify sources and their transmission path contributions to a certain position: typically the driver or passenger position. An innovative technique called ATPA is introduced to allow currently unmatched performances:

• ATPA can characterize the response transmission paths, improving the possibilities of other classical TPA methods by allowing the determination of the part of response due to neighboring subsystems.
• ATPA allows to find panel noise contributions even if the panels are coupled, without any dismounting: other already existing TPA techniques working with panel contributions use the hypothesis that panels are not linked together, which is not a good description of the reality.
• ATPA gives detailed information about the noise and vibration paths. Currently, it gives information about 2-step paths, for example: structure linking point N -> panel M -> target’s position. Potentially, the method can give information about any possible path thanks to the direct transmissibility.
• ATPA can split the global contribution of a panel into air-borne noise and structure-borne noise.
• ATPA provides results on a wide frequency range. Current TPA techniques work only for a low-frequency range. The presented technique allows to calculate noise contributions for mid and high frequencies as well as for low frequencies.

Automotive Techdays is aimed at decision-makers in the automotive industry. The major players in the automotive sector in the Auvergne-Rhône-Alpes region will present their innovations with short demonstrations (5-7 minutes).

OROS provides the automotive sector with a wide range of products and services for noise and vibration measurement. The goal for its users is to obtain an efficient evaluation of the vibro-acoustic phenomena by improving the comfort of the vehicles as well as their durability and their performance.