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Standard

Automotive Vehicle Brake Squeal Test Recommend Practice

2017-07-24
CURRENT
J2625_201707
This procedure is applicable to squeal type noise occurrences for passenger car and light truck type vehicles that are used under conventional operating conditions. For the purposes of this test procedure, squeal is defined as occurring between 900 and 18 000 Hz.
Standard

Automotive Disc Brake Pad Natural Frequency and Damping Test

2020-12-18
CURRENT
J2598_202012
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.
Standard

Automotive Disc Brake Pad Natural Frequency and Damping Test

2012-07-16
HISTORICAL
J2598_201207
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.
Standard

Automotive Disc Brake Pad Natural Frequency and Damping Test

2006-01-09
HISTORICAL
J2598_200601
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.
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