1 Scope
This standard specifies terminologies, symbols, principle, specimens, test equipment, performance determination, rounding off of measured performance values and test report for torsion test of metallic materials at ambient temperature.
This standard is applicable to determination of torsional mechanical performance of metallic materials at ambient temperature.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies.
GB/T 8170 Rules for Rounding off of Numberical Values
GB/T 10623 Metallic Material - Mechanical Testing - Vocabulary
JJG 269 Verification Regulation of Torsion Testing Machines
3 Principle
Foreword i
1 Scope
2 Normative References
3 Principle
4 Terminologies, Definitions and Symbols
5 Specimens
6 Test Equipment
7 Test Conditions
8 Performance Determination
9 Rounding off of Measured Performance Values
10 Test Report
Appendix A (Informative) Example for Determination of Shear Modulus by Stepwise Loading Method
Appendix B (Informative) Determination Methods of True Proof Strength, Non-proportional Torsion and True Torsional Strength
Appendix C (Informative) Example for Determination of Proof Strength, Non-proportional Torsion, τp0.015, by Stepwise Loading Method
References
