Stress Relaxation as Used in Underhood Component Design Verification
930090
03/01/1993
- Event
- Content
- Bench testing is a critical step in the design verification process of underhood components. The challenge to the test engineer in developing a component test is to both simulate in-use conditions and to establish useful and measurable performance criteria.The primary performance criteria for a sealing system, as in a rocker cover, is its ability to maintain a minimum sealing force necessary to prevent leakage. Compressive stress relaxation has been shown to be an important test for evaluating sealing materials and through the ASTM E-328 test method, a complete sealing system assembly can be evaluated.A test system has been developed to measure compressive stress relaxation of actual components and component assemblies under a variety of environmental conditions. The system was used to verify the design of a rocker cover assembly for its ability to maintain a minimum sealing force under simulated engine operating conditions.
- Pages
- 5
- Citation
- Belchuk, M., "Stress Relaxation as Used in Underhood Component Design Verification," SAE Technical Paper 930090, 1993, https://doi.org/10.4271/930090.