This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Comparison of Long Bar Test Method to Oberst Bar Test Method for Damping Material Evaluation
Technical Paper
2017-01-1851
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
Several methods for evaluating damping material performance are commonly used, such as Oberst beam test, power injection method and the long bar test. Among these test methods, the Oberst beam test method has been widely used in the automotive industry and elsewhere as a standard method, allowing for slight bar dimension differences. However, questions have arisen as to whether Oberst test results reflect real applications. Therefore, the long bar test method has been introduced and used in the aerospace industry for some time. In addition to the larger size bar in the long bar test, there are a few differences between Oberst (cantilever) and long bar test (center-driven) methods. In this paper, the differences between Oberst and long bar test methods were explored both experimentally and numerically using finite element analysis plus an analytical method. Furthermore, guidelines for a long bar test method are provided.
Recommended Content
Authors
Citation
Yoo, T., Gerdes, R., Lee, S., Stanley, D. et al., "Comparison of Long Bar Test Method to Oberst Bar Test Method for Damping Material Evaluation," SAE Technical Paper 2017-01-1851, 2017, https://doi.org/10.4271/2017-01-1851.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 | ||
Unnamed Dataset 3 | ||
Unnamed Dataset 4 | ||
Unnamed Dataset 5 |
Also In
References
- Stanley , D.R. Alternative method of measuring system loss factor presented at Noise-Con 2014 USA September 8-10, 2014
- Dowling , J. and Saha , P. A Correlation between Oberst Bar and Center Point Damping Results SAE Technical Paper 2009-01-2134 2009 10.4271/2009-01-2134
- Nashif , A. D. , Jones , D. I. G. , and Henderson , J. P. Vibration Damping New York John Wiley & Sons 1985 0-471-86772-1
- Vér I.L. and Beranek L.L. Noise and Vibration Control Engineering 579 609 New York John Wiley & Sons 2006 978-81-265-4680-0
- SAE International Surface Vehicle Recommended Practice Laboratory Measurement of the Composite Vibration Damping Properties of Material on a Supporting Steel Bar SAE Standard J1637 Aug. 2007
- ASTM E765-05(2010) Standard Test Method for Measuring Vibration-Damping Properties of Materials ASTM International West Conshohocken, PA 2010
- Grellman , G. , Seidler , S. Polymer testing Munich Hanser Publications 2007 978-1569904107