| 학회 |
한국고분자학회 |
| 학술대회 |
2008년 봄 (04/10 ~ 04/11, 컨벤션 뷰로(대전)) |
| 권호 |
33권 1호 |
| 발표분야 |
고분자 구조 및 물성 |
| 제목 |
Failure mechanism and prediction of long-term life time for polyethylene pipe |
| 초록 |
The failure mechanism and the morphology of polyethylene (PE) pipe were investigated. Microscopy observations using video microscope and scanning electron microscope indicate that the failure mode is a brittle fracture including cracks propagated from inner wall to outer wall. Oxidation induction time (OIT) and fourier transform spectroscopy (FT-IR) results show the presence of exothermic peak and the increase in carbonyl index on surface of fractured PE pipe, due to thermal-degradation. An accelerated life test methodology of PE pipe is developed using the relationship between stresses and life characteristics. A testing system for accelerated life is also developed. Consequently, the long-term life time of PE pipe is predicted and is analyzed. |
| 저자 |
정유경, 신세문, 최길영, 원종일
|
| 소속 |
한국화학(연) |
| 키워드 |
polyethylene pipe; accelerated life
|
| E-Mail |
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