首页|Effect of Vitamin-E Addition on Fatigue Crack Growth Property of Ultra High Molecular Weight Polyethylene
Effect of Vitamin-E Addition on Fatigue Crack Growth Property of Ultra High Molecular Weight Polyethylene
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In order to understand the influence of gamma-irradiation, accelerated aging and Vitamin-E addition on the fatigue crack growth properties of UHMWPE, fatigue crack growth tests of UHMWPE plates using compact tension specimens were carried out. The specimen conditioned in γ-irradiation and accelerated aging (the γ-aging specimen) has faster fatigue crack growth rate than the virgin specimens. For the Vitamin-E added specimen (the VE specimen), however, AK threshold of the γ-aging VE specimen is smaller than that of the VE specimen. This result shows that the addition of Vitamin-E reduced the decrease of ΔK threshold by γ-irradiation and accelerated aging.
ultra high molecular weight polyethylenebiomaterialknee jointfatigue crack growthvitamin-e, oxidization
Kazuto Tanaka、Masatoshi Uchiyama
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Department of Biomedical Engineering, Doshisha University,1-3 Miyakodani, Tatara, Kyotanabe city, Kyoto, 610-0394, Japan
Department of Mechanical Engineering, Kyoto University,Yoshida-honmachi, Sakyo, Kyoto, 606-8501
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