Sound Emission in Chassis Bushings

Sound emission in chassis bushings

Thanks to our unique test bench, we can analyze how noises in chassis bushings and bearings with applied pre-load arise. Therefore, the test bench is specially equipped, in order to automatically move the bearings under a set pre-load, while reducing the sound emission of the test rig itself.

The Automotive Interior Center of our cooperation partner ika is the ideal tool to measure and identify these sound phenomena at varying temperatures from -20 °C to +40 °C under anechoic conditions.

As the sound genesis depends not only on the bearing, but also on the characteristics of the movement itself (amplitude and frequency), the applied pre-load, temperature, and humidity, a complex testing matrix for each type of bearing is necessary. This obviously leads to difficulties in the subjective evaluation of sounds. Therefore, we combine the measured date with subjective auditory impressions within psycho-acoustic analyses and studies to generate target values.

[Foto: Sound Emission in Chassis Bushings]

[Foto: Sound Emission in Chassis Bushings]

Testing infrastructure

fka World of Research

[Foto: PV1000 -The People's Ventilator]
Voluntary Commitment | Julian Refghi M.Sc.

PV1000 - The People's Ventilator

A team of volunteers is developing the PV1000, a simple ventilator for intensive care that can be used as soon as the stock of conventional ventilators becomes scarce.

Read more ...

[Foto: fka Digital Events]
Corporate Development | Dr.-Ing. Markus Bröckerhoff

fka Digital Events

We focus on digital events and content – not only now, but also in the future.

Read more ...

[Foto: Sound.AI] Highlight-Project | Thomas Keutgens

Sonic Intelligence

fka experts from the fields of acoustics, electrics and electronics, strategy and consulting as well as automated driving, together with experts from ZF, have made the listening vehicle real.

Read more ...

read more news