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New Continuous Compression Stress Relaxation Test for Evaluation of Sealant Materials in Cyclic Temperature Environments
Technical Paper
2000-01-0753
ISSN: 0148-7191, e-ISSN: 2688-3627
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Sector:
Event:
SAE 2000 World Congress
Language:
English
Abstract
A new continuous compression stress relaxation test method has been developed for evaluating elastomeric materials for sealing applications. During a test, the elastomer component is compressed at various strain levels under precise displacement control. The sealing force is recorded continuously at a finite time interval. The test can be performed over a large temperature range - 40°C<T<150°C, and in various environments (air, coolant and oil). The reproducibility of the method has been evaluated on similar types of testing equipment. This measurement technique is capable of simulating the real sealing conditions, and thus is more suitable for diagnosing the real seal failure.
The stress decay of sealant materials has been modeled using finite element method (FEM) for both constant and cyclic temperature conditions. The time-dependent elastic behavior of sealant materials is modeled using the finite-strain viscoelasticity theory. The stress relaxation results from FEA are consistent with the experimental measurements.
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Authors
Topic
Citation
Pannikottu, A., Lu, Y., and Centea, M., "New Continuous Compression Stress Relaxation Test for Evaluation of Sealant Materials in Cyclic Temperature Environments," SAE Technical Paper 2000-01-0753, 2000, https://doi.org/10.4271/2000-01-0753.Also In
References
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- Bunting, W.M. Russell, W.D. Doin, J.E. Tate, A.L. “Important Test for Evaluation of Selaent Materials” SAE Paper, No.920135 1992
- HKS “ABAQUS User's Manual” Hibbit, Karlson and Sorenson, Inc. Pawtuckwt, RI 1999
- Derham., C.J “Transient Effect Influencing Sealing Force in Elastomeric O-Ring Seals” Plastic, Rubber and Composites Processing and Applications 26 3 129 136 1997