Bench tests are an important step to developing mufflers that perform adequately with acceptable pressure drop. Though the transmission loss of a muffler without flow is relatively simple to obtain using the two-load method, the presence of mean flow modifies the muffler behavior. The development of an insertion loss test rig is detailed. A blower produces the flow, and a silencer quiets the flow. Acoustic excitation is provided by a loudspeaker cluster right before the test muffler. The measurement platform allows for the measurement of flow-induced noise in the muffler. Also, the insertion loss of the muffler can be determined, and this capability was validated by comparison to a one-dimensional plane wave model.


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    Title :

    Development of a Muffler Insertion Loss Flow Rig


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    Noise and Vibration Conference & Exhibition ; 2019



    Publication date :

    2019-06-05




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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