GB/T 18258-2000 in English

《GB/T 18258-2000阻尼材料 阻尼性能测试方法》由TC53（全国机械振动、冲击与状态监测标准化技术委员会）归口，主管部门为国家标准化管理委员会。
本标准规定了采用悬臂梁共振法测定材料振动阻尼特性的方法。测定量包括材料的损耗因子η、弹性杨氏模量E、弹性剪切模量G。本标准适用于在结构振动、建筑声学和噪声控制等方面应用的材料。在50Hz到5kHz的频率范围及材料的有效使用温度范围内进行测量。

This standard specifies the methods of measuring the vibration-damping properties of materials, including loss factor η, elastic Young's modulus E and elastic shear modulus G, by cantilever beam resonance method.
Accurate over a frequency range of 50Hz to 5kHz and over the useful temperature range of the material, this standard is applicable to materials that have application in structural vibration, building acoustics and noise control, etc.

Foreword i
1 Scope
2 Normative References
3 Definitions and Symbols
4 Test Method and Apparatus
5 Test Specimen
6 Test Procedures
7 Data Processing
8 Test Report
9 Accuracy
Appendix A (Informative) Typical Frequency Response Curve of Undamped Test Specimen at Constant Temperature
Appendix B (Informative) Typical Elastic Young's Modulus-Frequency Curve of Free Layer Damping Materials at Different Temperatures
Appendix C (Informative) Typical Loss Factor-Frequency Curve of Free Layer Damping Materials at Different Temperatures