GB/T 19748-2005 in English

《GB/T 19748-2005钢材夏比V型缺口摆锤冲击试验 仪器化试验方法》由TC183（全国钢标准化技术委员会）归口，TC183SC4（全国钢标准化技术委员会力学及工艺性能试验方法分会）执行，主管部门为中国钢铁工业协会
本标准规定了钢材夏比V型缺口摆锤冲击试验仪器化试验方法的原理、术语及定义、试样、试验设备及仪器、试验步骤、试验结果评定和处理及试验报告。本标准适用于钢的夏比V型缺口试样。经协商，本标准也可用于其他金属材料和U型缺口试样的试验。

1 Scope

This standard specified the principles, terms and definitions, samples, test equipment and instrument, test procedure, evaluation of test results and treatment as well as the test results of Steel - Charpy V-notch pendulum impact test-Instrumented test method.
This standard is applicable to Charpy V-notch sample of steel. After negotiation, this standard may also be applied to the tests of other metallic materials and U-shaped notched test pieces.

2 Normative References

The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding amending errors in the text) to, or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest editions of these documents are applicable. For undated references, the latest edition of the normative documents referred to applies.

Contents
Foreword I
1 Scope
2 Normative References
3 Terms and Definitions
4 Symbols
5 Test Principle
6 Test Equipments and Instruments
7 Sample
8 Test Procedures
9 Evaluation and Treatment of Test Results
10 Test Report
Appendix A (Informative) Edge Design of Impact Blade and the Corresponding Force-Displacement Curve
Appendix B (Informative) Calibrated Supporting Shoe Sample with Radius of 2mm
Appendix C (Informative) Formulae to Calculate the Percentage of Ductile Fracture Surface
Appendix D (Informative) Definition, Symbol and Determination of Crack Formation Energy and Crack Propagation Energy