Standard No.:	GB/T 18258-2000
English Name:	Damping materials--Testing method for damping properties
Chinese Name:	阻尼材料 阻尼性能测试方法
Chinese Classification:	J04    Basic standards and general methods
Professional Classification:	GB    National Standard
Source Content Issued by:	State Quality and Technology Supervision Bureau
Issued on:	2000-01-01
Implemented on:	2001-7-1
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	3000 words
Translation Price(USD):	60.0
Delivery:	via email in 1 business day

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