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Ten cylindrical specimens, 8mm in both diameter and length, were machined from compression molded UHMWPE rods. Half of these specimens were gamma-irradiated in air at a dose of 2.9 Mrad without post irradiation treatment. Impact compression tests were performed using the split-Hopkinson pressure-bar technique to evaluate dynamic stress-strain relation up to 8% strain at a strain rate of about 400s-1. For both gamma-irradiated and unirradiated specimens, stress-strain relations exhibited relatively linear portions up to 2% strains and the gradients eventually decreased with increasing strain. Young\u0027s modulus determined from the linear portion and 0.5% yield stress were significantly higher for gamma-irradiated specimens than for unirradiated specimens. Two-dimensional elasto-plastic stress and strain analysis of hip prosthesis was performed under impact loading using a finite element method. Results indicated that the increase in mechanical properties induced by gamma irradiation reduced plastic strain within the UHMWPE cup.", "subitem_description_type": "Abstract"}]}, "item_5_full_name_3": {"attribute_name": "\u8457\u8005\u5225\u540d", "attribute_value_mlt": [{"nameIdentifiers": [{"nameIdentifier": "40023", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Kobayashi, Koichi"}]}, {"nameIdentifiers": [{"nameIdentifier": "40024", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Kakinoki, Toshihiko"}]}, {"nameIdentifiers": [{"nameIdentifier": "40025", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Tanabe, Yuji"}]}, {"nameIdentifiers": [{"nameIdentifier": "40026", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Sakamoto, Makoto"}]}]}, "item_5_publisher_7": {"attribute_name": "\u51fa\u7248\u8005", "attribute_value_mlt": [{"subitem_publisher": "\u65e5\u672c\u5b9f\u9a13\u529b\u5b66\u4f1a"}]}, "item_5_relation_31": {"attribute_name": 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