Journal of Applied Reliability (한국신뢰성학회지:신뢰성응용연구)
- Volume 9 Issue 4
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- Pages.275-290
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- 2009
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- 1738-9895(pISSN)
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- 2733-8320(eISSN)
Service life prediction of rubber seal materials for immersion tunnel by accelerated thermal degradation tests
가속 열 노화시험을 이용한 침매터널용 고무 씰 소재의 사용수명 예측
- Park, Joon-Hyung (Korea Testing & Research Institute) ;
- Park, Kwang-Hwa (Korea Testing & Research Institute) ;
- Park, Hyeong-Geun (Korea Testing & Research Institute) ;
- Kwon, Young-Il (Cheongju University) ;
- Kim, Jong-Ho (Hwaseung Exwill co.,ltd.) ;
- Sung, Il-Kyung (Hwaseung Exwill co.,ltd.)
- Received : 2009.08.14
- Accepted : 2009.10.09
- Published : 2009.12.25
Abstract
This paper considers accelerated thermal degradation tests which are performed for rubber seal materials used for undersea tunnels constructed by immersion method. Three types of rubber seals are tested; rubber expansion seal, omega seal, and shock absorber hose. Main ingredient of rubber expansion seal is EPDM(Ethylene Propylene Diene Monomer) and that of both omega seal and shock absorber hose is SBR(Styrene Butadiene Rubber). The accelerated stress is temperature and an Arrhenius model is introduced to describe the relationship between the lifetime and the stress. From the accelerated degradation tests, dominant failure mode of the rubber seals is found to be the loss of elongation. The lifetime distribution and the service life of the rubber seals at use condition are estimated from the test results. The acceleration factor for three types of rubber seals are also investigated.