Noise and vibration measurements are performed either in our laboratories or at our proving grounds. The measurements are performed at vehicle or system and sub-system level. The assessment and solving of issues are typically performed in the laboratories.
The hemi-anechoic chamber is used to perform any type of test that requires no distraction from foreign noises and vibration events. The room is completely isolated from the rest of the building and the dynamometer inside the chamber is capable of reproducing the driving conditions existing in the proving ground. The noise absorbing wedges installed in the walls and ceiling minimize noise reflection emulating free field condition. The anechoic space of the chamber is approved according to ISO 26101:2017 and is used for measurement according to UN Regulation 138 (AVAS, minimum noise) and UN Regulation 28 (horn noise).
Facility’s main characteristics:
The modal analysis test bench is placed in a quiet room and is suitable for performing modal analysis over trimmed body and body-in-white. Measurements are also performed on systems and sub-systems. On top of that, the modal analysis measurement setup can be scaled up to commercial vehicle body size, upon request.
The team is, therefore, experienced in analysing anything from small single parts, like brake pads and instrument panels, up to commercial vehicle cabins and complete bus structures.
The four-poster bench is generally applied for known vibrational inputs to the vehicle’s wheels. This allows investigating multiple vehicle issues. Some examples are the evaluation of body resonances, system eigenmodes or squeaks and rattles.