Many car companies use rumble strips to evaluate Buzz, Squeak & Rattle (BSR) performance of vehicles. Some call these surfaces by other names such as chatter bumps or wake-up strips. But regardless of what they're called, these surfaces are characterized by a uniform spacing of bumps or strips which are driven over at a particular speed(s).This is a relatively easy way to generate relatively high vibration levels so these surfaces are often favorites of the team doing total vehicle evaluation for BSR. If this is the case, then it is essential that a rumble strip evaluation be performed at the subsystem or component level when certifying that a particular item will not generate BSR problems in the vehicle.One of Siemens' customers uses Rumble Strips to evaluate the Radio/CD player that Siemens supplies. Carefully defined test track tests showed that the particular dynamic characteristics of the Rumble Strip surface made it very challenging to have a repeatable, realistic test. Very small variations in the actual speed (of only 1 mph!) could cause the difference between having a quiet radio/CD or a noisy radio/CD. Furthermore, the troublesome speed varies depending on the resonances of the I-P so what's a radio/CD supplier to do?If at all possible, Siemens wants to supply radio/CD units that will not have BSR issues at any speed or when mounted in any reasonably stiff Instrument Panel in any vehicle. However in order to pursue that goal it's necessary to have a reasonable worst case lab BSR test for the radio/CD unit that is repeatable.This paper describes the considerable challenges presented by a rumble strip surface and presents one innovative solution that Siemens is using to overcome those challenges.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Using Rumble Strips for Buzz, Squeak and Rattle (BSR) Evaluation of Subsystems or Components


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE 2007 Noise and Vibration Conference and Exhibition ; 2007



    Publication date :

    2007-05-15




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Using rumble strips for buzz, squeak and rattle ( BSR ) evaluation of subsystems or components

    Peterson,E.L. / Sestina,M. / MB Dynamics,US et al. | Automotive engineering | 2007


    Microphones for automotive buzz, squeak, & rattle testing

    Tustin, W. | British Library Online Contents | 1997


    Automatic Detection of Buzz, Squeak and Rattle Events

    Pickering, DJ / Cerrato-Jay, G. / Gabiniewicz, J. et al. | SAE Technical Papers | 2001


    Automotive buzz, squeak and rattle : mechanisms, analysis, evaluation and prevention

    Trapp, Martin / Chen, Fang / Ziegler-Instruments GmbH, Mönchengladbach | TIBKAT | 2012


    Automotive Buzz, Squeak and Rattle (BSR) Detection and Prevention

    Gosavi, Santosh S | SAE Technical Papers | 2005