STP567: A New Method for Testing Brake Lining Materials

    Begelinger, A
    Senior research associate and head of department, Metal Research Institute TNO, Apeldoorn, The Netherlands

    de Gee, AWJ
    Senior research associate and head of department, Metal Research Institute TNO, Apeldoorn, The Netherlands

    Pages: 19    Published: Jan 1974


    Abstract

    A new method for testing brake lining materials in the laboratory is described. This method is essentially isothermal by nature, thus avoiding the usual problems associated with differences between the heat-transfer characteristics of brake assemblies in road vehicles and those of laboratory test rigs. As an example of application of the method, friction-time-temperature curves of five different brake lining materials are presented and discussed in terms of time- and temperature-depending transformations in the composition of the lining materials.

    The quality of the materials is described by the following properties: temperature range in which glazing effects occur; temperature range in which carbonization effects occur; steady-state value of the coefficient of friction; wear (decrease in thickness) of the lining; and sensitivity of the lining material to moisture.

    Keywords:

    brake linings, test method, pin and ring machine, erosion, induction heating, isothermal conditions, temperature, friction, wear, evaluation, tests


    Paper ID: STP32238S

    Committee/Subcommittee: G02.50

    DOI: 10.1520/STP32238S


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