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Rationale for a Standardized Vibration Damping Test Procedure for Automotive Applications
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Abstract
This paper discusses the importance of having an industry-wide standardized laboratory test procedure for proper evaluation of vibration damping materials, and for consistency between damping tests conducted by different test facilities. Several different vibration damping test procedures that are presently used in the automotive industry are briefly discussed. However, a test method that has been selected for a new proposed SAE Recommended Practice based on exciting a beam at various modes of vibration and at different temperatures is discussed here.
The relative superiority of this test method over other methods, the importance of selecting the most appropriate beam size, and how the damping performance should be measured for consistency and clarity are emphasized.
A round-robin test was conducted to determine the variability of the test procedure. Factors considered were type of damping material, bar mounting, and differences between laboratory instrumentation.
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Citation
Chahine, J. and Saha, P., "Rationale for a Standardized Vibration Damping Test Procedure for Automotive Applications," SAE Technical Paper 920406, 1992, https://doi.org/10.4271/920406.Also In
References
- Plunkett, R. Measurement of Damping; “Structural Damping” Ruzica Jerome E. 1959 ASME Annual Meeting 117 131
- Society of Automotive Engineers (SAE) Standard J671 Vibration Damping Material and Underbody Coatings
- American Society of Testing and Materials (ASTM) E756-83 Standard Method for Measuring Vibration Damping Properties of Materials
- British Standard Automobile Series, B.S. AU125:1966 Specification for Methods of Test for Panel Damping Materials
- Terashi, S. Asai, M. Nalto, J. Damping Analysis of Body Panels for Vehicle Interior Noise Reduction Proceedings of the 1989 SAE Noise and Vibration Conference 103 115
- Japanese Automobile Standards (JAS) M329 Asphalt Sheet for Automobiles
- ASTM E691 Practice for Conducting an Inter-laboratory Study to Determine the Precision of a Test Method