Abstract
An instrument is described that provides an economical means by which normal motoring on public highways can be used to obtain reliable and relevant brake lining wear rate assessments, thus eliminating the need for the conventional artificial, repetitive, test.
The development and final form of the instrument is detailed and its employment to monitor the brake usage, to provide a means of obviating abnormalities and to detect changes in the wear rate of material, is explained. Formulae are derived showing how the wear accumulated during any journey may be related to the mean brake temperature and the distance travelled and graphs are used to demonstrate how the range of application of the instrument accommodates driver changes.
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