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Standard

Brake Insulator Damping Measurement Procedure

2023-06-19

CURRENT

J3001_202306

This procedure is applicable to modes from 500 and 13,000 Hz. The parameters measured with this procedure are defined as the damping factor, ξ for first nine vibration modes of the beam. The measurement will be done in free-free conditions and with temperature.

Standard

Brake Insulator Damping Measurement Procedure

2016-04-20

HISTORICAL

J3001_201604

This procedure is applicable to modes from 500 and 13,000 Hz. The parameters measured with this procedure are defined as the damping factor, ξ for first nine vibration modes of the beam. The measurement will be done in free-free conditions and with temperature.

Standard

Brake Insulator Damping Measurement Procedure

2011-02-04

HISTORICAL

J3001_201102

This procedure is applicable to modes between 1500 and 15 000 Hz. The parameters measured with this procedure are defined as the damping factor, ξ for first three bending modes of the beam. The procedure will focus on bending modes only.

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.

Standard

Verification of Brake Rotor and Drum Modal Frequencies

2022-09-08

CURRENT

J2933_202209

This document describes standard test methods, analysis methods, and reporting methods for measuring the resonant modes of automotive disc brake rotors and drums for design/development and production verification of these components.