Automotive Disc Brake Pad Natural Frequency and Damping Test
This procedure is applicable to brake pad modes between 500 Hz and 16 kHz. The parameters measured with this procedure are defined as the first three natural frequencies, fn (n = 1, 2, 3), and the corresponding loss factors, η.
In order to improve the repeatability and reproducibility of this document, the current revision adds a requirement to report the exact location of the excitation and measurement points and also defines the key characteristics of the foam used to simulate the free-free conditions.
Data acquisition and handling
Also known as: SAE J 2598
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