Noise / Vibration / Harshness [NVH] problems in transmissions can have many different root causes such as gear design, gear manufacturing, heat treatment distortion, system deflections, system resonance and dynamic response etc.

It is well known that NVH is a complex subject but, owing to the unique combination of extensive experience, testing and leading technology, SMT is confident of being able to solve NVH problems.

Finding the root cause and solving it may use any of the many areas of SMT’s expertise – measurement of noise and vibration, system static and dynamic modelling, Transmission Error measurement, rig testing, gear manufacturing development and development of heat treatment distortion.