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
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.
Contents of GB/T 18258-2000
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
