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SAE J1637 Vibration Damping Round Robin Study: Summary and Conclusions
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 08, 2023 by SAE International in United States
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As part of the update process to SAE J1637, “Laboratory Measurement of the Composite Vibration Damping Properties of Materials on a Supporting Steel Bar”, the Acoustical Materials Committee commissioned a round robin study to determine the current laboratory-to-laboratory variation, and to better understand best practices for composite loss factor measurements. Guidance within the current standard from a previous round robin study indicates a coefficient of variation of 35% for laboratory-to-laboratory measurements. It was hoped that current instrumentation and test practices would yield lower variability. Over the course of 5 years, 10 separate laboratories tested 4 bars: three damped steel bars and one bare steel bar. The bars were tested at -20°C, -5°C, 10°C, 25°C, 40°C, and 55°C. The damping materials were intentionally selected to provide low damping, moderate damping, and high damping to illustrate difficulties in determining the composite loss factor with increased damping. Additionally, the differences between automated and manual data acquisition systems and contact and non-contact transducers are reviewed. The results of this study were used for the 2021 update to the SAE J1637 standard.
CitationDeshpande, S. and Moritz, C., "SAE J1637 Vibration Damping Round Robin Study: Summary and Conclusions," SAE Technical Paper 2023-01-1053, 2023, https://doi.org/10.4271/2023-01-1053.
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- Saha , P. and Chahine , J. The Thought and Reasoning Behind Developing SAE J1637 - Vibration Damping Test Method SAE Technical Paper 931320 1993 https://doi.org/10.4271/931320
- Saha , P. , Deshpande , S. , Moritz , C. , and Sorenson , S. SAE and Other Standards for Determining Acoustical Properties of Sound Package Materials SAE Technical Paper 2015-01-2207 2015 https://doi.org/10.4271/2015-01-2207
- Black , M. and Rao , M. Material Damping Properties: A Comparison of Laboratory Test Methods and the Relationship to In-Vehicle Performance SAE Technical Paper 2001-01-1466 2001 https://doi.org/10.4271/2001-01-1466
- 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
- Moritz , C. and Deshpande , S. SAE J1637 Vibration Damping Round Robin Study SAE Technical Paper 2017-01-1881 2017 https://doi.org/10.4271/2017-01-1881