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Brake Rotor Thermal Cracking Procedure for Vehicles Below 4 540 kg GVWR
- Ground Vehicle Standard
- J2928_201805
- Reaffirmed
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
Scope
This recommended practice is derived from common test sequences used within the industry. This procedure applies to all on-road passenger cars and light trucks up to 4 540 kg of GVWR. This recommended practice does not address other aspects such as performance, NVH, and durability. Test results from this recommended practice should be combined with other measurements and dynamometer tests (or vehicle-level tests), and acceptance criteria to validate a given design or configuration.
Rationale
This recommended practice provides a standard laboratory method and performance criteria to assess brake rotors for crack initiation and crack propagation during high-energy brake applications.
The SAE Task Force acknowledges the developments and best practices from different European working groups and regulatory entities as the backbone of this recommended practice.
Recommended Content
| Ground Vehicle Standard | FMVSS Inertia Dynamometer Test Procedure for Vehicles Below 4540 kg GVWR |
| Ground Vehicle Standard | Verification of Brake Rotor and Drum Modal Frequencies |
| Ground Vehicle Standard | Dynamometer Global Brake Effectiveness |
Topic
Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| Unnamed Dataset 1 | ||
| TABLE 1 | ROTOR CRACK TEST SEQUENCE | |
| TABLE 2 | INSPECTION LOG FOR CRACKS AND PAD REPLACEMENT |
Issuing Committee
Brake Dynamometer Standards Committee
The Brake Dynamometer Standards Committee is part of the Foundation Brake Steering Committee that reports to the Motor Vehicle Council. The committee is responsible for developing standards, recommended practices, and information reports for brake dynamometer testing, for on-road vehicles below 4540 kg of Gross Vehicle Weight Rating. The committee also maintains liaison activities with other Standard Development Organizations or industry consortia.
Reference
| Number | Title |
|---|---|
| J2784_202101 | This document is not part of the subscrption. |
| J2789_201809 | Inertia Calculation for Single-Ended Inertia-Dynamometer Testing |
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