This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Exploring Oberst Beam Standard Method for Viscoelastic Materials to Increase Test Confidence and Applicability
ISSN: 0148-7191, e-ISSN: 2688-3627
Published November 07, 2017 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Damping treatments can be employed to mitigate vibration levels of structures near a specific resonance frequency. In the automotive area, constrained-layer dampers are the most employed, consisting on a viscoelastic layer bonded to a metallic-restrictor layer and to the structure itself subsequently. The damper’s frequency performance is strongly dependent upon the temperature of operation, which means that there is a need to characterize this relation in order to choose the best damping material, thus optimizing the application. In this paper, a laboratory test procedure known as the Oberst Beam Method was employed to characterize the frequency and temperature behavior of a commonly used damper. The test, which involves the Frequency Response Function measurement of a system composed by the damper applied to a standardized beam, followed a SAE procedure. An auxiliary CAE model was also developed and compared to physical test results. As conclusion, modifications were proposed in order to improve results confidence and the applicability of the standard test in a laboratory environment.
|Technical Paper||A Durability Analysis Case Study of SUV and MUV Using Measured Proving Ground Road Profiles|
|Technical Paper||Dynamic Simulation and Analysis System for Electro-Hydraulic Circuit|
CitationCarvalho, L. and Coraça, E., "Exploring Oberst Beam Standard Method for Viscoelastic Materials to Increase Test Confidence and Applicability," SAE Technical Paper 2017-36-0179, 2017, https://doi.org/10.4271/2017-36-0179.
Data Sets - Support Documents
|Unnamed Dataset 1|
|Unnamed Dataset 2|
- Rao , Mohan D. Recent applications of viscoelastic damping for noise control in automobiles and commercial airplanes Journal of Sound and Vibration 262.3 2003 457 474
- Jones , D. I. G. Viscoelastic materials for damping applications NASA STI/Recon Technical Report A 81 1980 27 51
- Macioce , Paul Viscoelastic damping 101 Sound and Vibration Magazine 4 2003 4 5
- ASTM , E. 756-04: Standard test method for measuring vibration-damping properties of materials American Society for Testing and Materials 2004
- Laboratory Measurement of the Composite Vibration Damping Properties of Materials on a Supporting Steel Bar SAE J1637
- Koruk , Hasan , and Sanliturk Kenan Y. On measuring dynamic properties of damping materials using Oberst beam method ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis American Society of Mechanical Engineers 2010
- Erdoğan , G. , Bayraktar F. , and Sanliturk K. Y. Measurement of dynamic properties of materials MEASUREMENT 2003
- Wojtowicki , Jean-Luc , Jaouen Luc , and Panneton Raymond New approach for the measurement of damping properties of materials using the Oberst beam Review of scientific instruments 75.8 2004 2569 2574