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Measuring Vibration Characteristics in Seating
Technical Paper
2016-01-1313
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Most methods of vibration analysis focus on measuring the level of vibration. Some methods like ISO-2631 weigh vibration level based on human sensitivity of location, direction, and frequency. Sound can be similarly measured by sound pressure level in dB. It may also be weighted to human frequency sensitivity such as dBA but sound and noise analysis has progressed to measure sound quality. The characteristic and the nature of the sound is studied; for example equal or near equal sound levels can provide different experiences to the listener. Such is the question for vibration; can vibration quality be assessed just as sound quality is assessed?
Early on in our studies, vibration sensory experts found a difference in 4 seats yet no objective measurement of vibration level could reliably confirm the sensory experience. Still these particular experiences correlated to certain verbal descriptors including smoothness/roughness. This new metric tries to capture that specific sensory experience. A larger study was done with more road profiles and non-expert occupants that further confirmed that this proposed metric correlated equally or better to sensory when compared to other industry established metrics.
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Citation
Pinkelman, B. and Song, W., "Measuring Vibration Characteristics in Seating," SAE Technical Paper 2016-01-1313, 2016, https://doi.org/10.4271/2016-01-1313.Also In
References
- Paddan , G. S. and Griffin , M. J. 2002 Effects of seating on exposures to whole-body vibrations in vehicles J. Sound Vib. 253 1 215 41
- Jonsson , P. and Johansson , O. 2005 Prediction of vehicle discomfort from transient vibrations J. Sound Vib. 282 1043 64
- ISO 2631-1 : Mechanical vibration and shock evaluation of human exposure to whole-body vibration ISO 1997
- Psychoacoustics: Facts and Models Zwicker , E. and Fasti , H. Springer Berlin 2006
- Song , W. , Saito , H. , and Haddad , K. Improved Noise Source Identification Using Sound Quality Metrics Mapping in Vehicle Noise Measurements SAE Technical Paper 2011-01-1671 2011 10.4271/2011-01-1671
- Automatic Detection of Buzz, Squeak and Rattle Events Cerrato-Jay , G. , Gabiniewicz , J. , Gatt , J. , and Pickering , D. SAE International 2001 1479
- Griffin M. J. Handbook of Human Vibration Academic Press 1996
- Recommendation ITU-R BS. 1534-1: Method for the subjective assessment of intermediate quality level of coding systems International Telecommunication Union 2003
- Montgomery D. C. Design and Analysis of Experiments John Wiley & Sons, INC. 2001