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논문 기본 정보

자료유형
학술저널
저자정보
장갑식 (FITI시험연구원) 정예리 (FITI시험연구원) 전병대 (아즈텍WB)
저널정보
한국신뢰성학회 신뢰성응용연구 신뢰성응용연구 제15권 제4호
발행연도
2015.12
수록면
270 - 275 (6page)

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Purpose : UHMWPE (Ultra-high-molecular-weight-polyethylene) is one of the most widely used material in knife protection clothes because of high strength, elasticity, and light weight. The purpose of this study is to develop the accelerated life test method and predict the lifetime for the knife protection fabric composed by UHMWPE.
Methods : In this study, degradation characteristics of UHMWPE fibers and knife protection fabric for cut resistance were evaluated under the hydrolysis and photo-degradation conditions. It was found out that the degradation rate of retained tensile strength was more significant in the photo-degradation than hydrolysis. Therefore, the failure time was determined as the time that the retained tensile strength in photo-degradation is less than 50%. Considering an acceleration factor for irradiance and exposure time, the lifetime was predicted from the calculated failure time.
Results : As a result of the accelerated life test, the B10 lifetime of knife protection fabric composed by UHMWPE fibers is estimated as 2.8 years for a 90% statistical confidence level.
Conclusion: Since the lifetime is predicted by the view-point of radiant exposure in this study, there is a possibility that the estimated lifetime may differ from the actual lifetime. However, it is considered as an useful methodology to estimate the long-term lifetime of knife protection fabrics.

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1. 서론
2. 평가시료
3. 내환경성평가(가속인자 도출)
4. 가속수명시험
5. 결론
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