SAE J2725_201709
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Road Vehicles - Friction Materials - Elastic Properties Measurements
Hardcopy , PDF
03-05-2023
English
29-09-2017
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1. SCOPE
2. REFERENCES
3. DEFINITIONS
4. SYMBOLS AND UNITS
5. EQUIPMENT
6. SAMPLE PREPARATION
7. EQUIPMENT AND TEST RIG SPECIFICATION
8. CALIBRATION
9. NON-LINEAR FRICTION MATERIALS
10. TEST PROCEDURE (ELASTIC CONSTANTS AT
AMBIENT TEMPERATURE)
11. RECOMMENDED INFORMATION TO INCLUDE IN ELASTIC
CONSTANT REPORT
12. TEST PROCEDURE (PRE-LOAD-DEPENDENCE AND VARIABILITY)
13. LOAD DEPENDENCE REPORT
14. TEST PROCEDURE FOR ELEVATED TEMPERATURE
MEASUREMENTS
15. RECOMMENDED INFORMATION TO INCLUDE IN TEMPERATURE
DEPENDENCE REPORT
16. DATA FUSION COMBINING AMBIENT, PRE-LOAD, AND
TEMPERATURE MEASUREMENTS
17. NOTES
APPENDIX A - THEORY: DETERMINATION OF ELASTIC PROPERTIES
FROM ULTRASONIC MEASUREMENTS
This SAE Standard specifies a method for testing and measuring elastic constants in friction materials by precise ultrasonic velocity measurements.
| DocumentType |
Standard
|
| Pages |
28
|
| PublisherName |
SAE International
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
This SAE Standard specifies a method for testing and measuring elastic constants in friction materials by precise ultrasonic velocity measurements. Measurement methods are also described for measurement of the out-of-plane modulus as a function of pre-load as well as the measurement of engineering constants as a function of temperature. Finally, methods are formulated to produce all engineering constants as a function of pre-load and temperature.
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