AE Characterization of Fracture Behavior in Bioceramics under Simulated Body Environment
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- KAWAKAMI Teppei
- Graduate Student, Tokyo Metropolitan University
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- KOBAYASHI Satoshi
- Department of Mechanical Engineering, Tokyo Metropolitan University
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- WAKAYAMA Shuichi
- Department of Mechanical Engineering, Tokyo Metropolitan University
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抄録
The effect of simulated body environment on mechanical properties and fracture behavior of bioceramics were investigated. Alumina ceramics, which is a typical bioinert ceramics, was used. Four-point bending tests were carried out in air, refined water and the simulated body fluid in order to investigate the dependence of microfracture process on environments. The microfracture process during the bending tests was evaluated by an acoustic emission technique. Rapidly increasing point of cumulative AE energy was observed before the final unstable fracture. It was understood that the stress at AE increasing point, σC, corresponds to the maincrack formation stress in the previous work. These test environments affected σC more strongly than bending strength, σB. Consequently, it was suggested that the critical stress, σC, is available as an evaluation parameter, which is essential as the yield strength in metals, for bioceramics.
収録刊行物
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- JSME International Journal Series A Solid Mechanics and Material Engineering
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JSME International Journal Series A Solid Mechanics and Material Engineering 46 (3), 348-352, 2003
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
- 1390001206492879232
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- NII論文ID
- 10016191632
- 30002105376
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- NII書誌ID
- AA11179396
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- ISSN
- 13475363
- 13447912
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- NDL書誌ID
- 6602246
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可