Applied Vibration Analysis for Acoustic Quality Assurance in Production

Dipl. Ing. Michael Ruthrof, red-ant measurement technologies and services
2 October, 2010 



As a rule, car buyers want to buy a car with as little irritating noise as possible. Previously, the engine noise mostly covered all other noises. However, increasing capsulation of engines means that other noises are now coming to the foreground. For example, poorly produced gears generate audible tonal noises, which are regarded as being particularly critical when assessing the total noise level. Vibration-diagnosis in quality assurance for engine and gear production can prevent poorly produced gears with acoustically perceptible defects such as screeching, whistling and knocking, or acoustically conspicuous engines from being built into the vehicle, and thus making their way to the consumer.