Vibration Analysis of a Brake Disc

Bremsen1 Bremsen2
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Auto­mo­bi­les are sub­ject to many for­ces using ope­ra­ti­on. Vibra­ti­ons from the engi­ne or the road-sur­face trans­mit through the vehicle’s chas­sis and sus­pen­si­on to the most essen­ti­al mecha­ni­cal com­po­nent of the vehi­cle, the bra­ke system.

Bremsen3

In this examp­le, a 14” dia­me­ter bra­ke disc from a hea­vy­du­ty truck was exci­ted using a small ham­mer to mea­su­re the vibra­ti­on shapes of the rotor. The three-dimen­sio­nal ope­ra­tio­nal deflec­tion shapes were easi­ly iden­ti­fied and mea­su­red using the Vic-3D™ HS Vibra­ti­on Ana­ly­sis Sys­tem. Ampli­tu­des as small as 40 nano­me­ters were mea­su­red at a fre­quen­cy of appro­xi­mate­ly 2,000 Hz.