書誌事項
- タイトル別名
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- Effect of Low-Gamma Irradiation on the Impact Compressive Properties of Ultra High Molecular Weight Polyethylene and Its Constitutive Model
- チョウコウブンシリョウ ポリエチレン ノ ショウゲキ アッシュク トクセイ ニ オヨボス テイガンマセン ショウシャ ノ エイキョウ ト コウセイソク ノ ケントウ
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The effects of low-gamma irradiation on the impact compressive properties of ultra high molecular weight polyethylene (UHMWPE) were investigated. Gamma irradiation was performed at 30kGy in nitrogen or at 29kGy in air without post-irradiation treatment. Impact compressive tests using the split-Hopkinson pressure-bar (SHPB) technique were performed to measure stress–strain relations up to a true strain of 8% at a strain rate of 260s-1. Gamma irradiation in air significantly increased the Young's modulus and the 0.5% yield stress, and gamma irradiation in N2 significantly increased the 0.5% yield stress, as determined by impact compressive testing. The impact stress-strain behaviors of both unirradiated and gamma irradiated UHMWPE specimens were compared by the elasto-viscoplastic model proposed by Bergström [Biomaterials Vol.23 p.2329 (2002)]. We found that the elasto-viscoplastic model had a potential to predict the observed impact stress-strain responses.
収録刊行物
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- 材料
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材料 57 (9), 882-886, 2008
公益社団法人 日本材料学会
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詳細情報 詳細情報について
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- CRID
- 1390001205417471360
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- NII論文ID
- 130002085622
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- NII書誌ID
- AN00096175
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- ISSN
- 18807488
- 05145163
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- NDL書誌ID
- 9653866
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可