This SAE Standard specifies a method for testing and measuring elastic constants in friction materials by precise ultrasonic velocity measurements. Measurement methods are also described for measurement of the out-of-plane modulus as a function of pre-load as well as the measurement of engineering constants as a function of temperature. Finally, methods are formulated to produce all engineering constants as a function of pre-load and temperature. This SAE Standard specifies a method for testing and measuring elastic constants in friction materials by precise ultrasonic velocity measurements. This specification has been modified to include the measurement of the out-of-plane modulus as a function of pre-load as well as the measurement of engineering constants as a function of temperature. Finally, methods are formulated to produce all engineering constants as a function of pre-load and temperature. SAE J2725 has been reaffirmed to comply with the SAE Five-Year Review policy.


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    Title :

    Road Vehicles - Friction Materials - Elastic Properties Measurements


    Publication date :

    2023-04-21



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English







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