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Home > Forums > Mechanical Engineers > Activities > Gear & Pulley engineering Forum

Gears noise measurement

Read More Threads Like This One

johnnybegood (Automotive)

19 Sep 03 12:03

Does anyone know about tech articles and/or books about the theory ( if any ) of gears noise mesurements ? Thanks for all your help

johnnybegood

diamondjim (Mechanical)

20 Sep 03 22:44

They have done a lot of research at Ohio State
on gear noise but you may have to know someone
to get the information and technical bulletins.

involute (Mechanical)

23 Sep 03 21:01

noise can be generated from a lot of sources in a gear drive
listed are some sources of noise
1 involute profile variation
2 helix angle variation
3 tooth to tooth error
4 misalighment of the bores
5 noise from bearings
6 wrong design of the casing
7 deflection of gear box shafts during load generating noise on the gear drive
We try to limit the composite noise level to about 70 decibel on a gear drive

partha707 (Automotive)

29 Sep 03 23:17

In addition, if there is a highspot or damage on the gear teeth, a cyclic noise will come when ever the damaged gear teeth come in to contact.

Carburize (Materials)

3 Oct 03 10:27

Reference "Noise Control - Measurement,Analysis and Control of Sound and Vibration" by C.E.Wilson ISBN 0-89464-878-9

As well as all the other "mechanical" influences discussed by other contributors, the tips of the teeth of large high speed gears rotating at 30,000 rpm can be exceeding the speed of sound - yet another source of significant noise generation.

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