Oリング用エチレンプロピレンゴム(EPDM)の静き裂進展特性および下限界引裂きエネルギに及ぼす架橋剤と水素曝露の影響
書誌事項
- タイトル別名
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- Influence of Vulcanizing Agents and Hydrogen Exposure on Static Crack Growth Properties and Threshold Tearing Energy of EPDM for O-Ring
- Oリングヨウ エチレンプロピレンゴム EPDM ノ セイ キレツ シンテン トクセイ オヨビ カゲンカイ ヒキサキ エネルギ ニ オヨボス カキョウザイ ト スイソ バクロ ノ エイキョウ
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説明
Hydrogen pressure at blister initiation of a peroxide-crosslinked EPDM composite (NFT) was successfully estimated in terms of fracture mechanics in the previous study. In that estimation, threshold tearing energy of a static crack T_<s,th> in air room temperature was employed as the resistance of the blister initiation. In this study, static crack growth tests of a sulfur-crosslinked EPDM composite (NF) were conducted using single edge crack specimens in air and in 0.7MPa hydrogen gas at room temperature; then the influence of the type of vulcanizing agents (peroxide and sulfur) and hydrogen exposure on static crack growth properties and threshold tearing energy was investigated. From the observation of static crack growth by optical and secondary electron microscopes, NF had a rougher fracture surface than NFT; consequently, the static crack rate of NF was slower than that of NFT at the same tearing energy. The T_<s,th> value of NF was also about three times higher than that of NFT. Hydrogen did not influence the tendency of the da/dt-T curves and T_<s,th> values of NF and NFT.
収録刊行物
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- 日本機械学会論文集Ａ編
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日本機械学会論文集Ａ編 75 (759), 1531-1541, 2009
一般社団法人 日本機械学会
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詳細情報 詳細情報について
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- CRID
- 1390001204477874560
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- NII論文ID
- 110007482703
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- NII書誌ID
- AN0018742X
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- ISSN
- 18848338
- 03875008
- http://id.crossref.org/issn/03875008
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- NDL書誌ID
- 10505133
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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サーチ
- Crossref
- CiNii Articles
- OpenAIRE
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- 抄録ライセンスフラグ
- 使用不可