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  1. B200 工学部/工学研究科
  2. B200a 雑誌掲載論文
  3. 学術雑誌

多孔質セラミックスの破壊靭性評価

http://hdl.handle.net/2237/9161
121f951e-8e9b-472d-ab60-a7e33e9865e7
名前 / ファイル ライセンス アクション
JsMecEngA_67-660-1378.pdf JsMecEngA_67-660-1378.pdf (860.9 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2007-12-17
タイトル
タイトル 多孔質セラミックスの破壊靭性評価
その他のタイトル
その他のタイトル Evaluation of Fracture Toughness of Porous Ceramics
著者 坂井田, 喜久

× 坂井田, 喜久

WEKO 20992

坂井田, 喜久

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SAKAIDA, Yoshihisa

× SAKAIDA, Yoshihisa

WEKO 20993

SAKAIDA, Yoshihisa

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田中, 啓介

× 田中, 啓介

WEKO 20994

田中, 啓介

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TANAKA, Keisuke

× TANAKA, Keisuke

WEKO 20995

TANAKA, Keisuke

Search repository
権利
権利情報 日本機械学会
権利
権利情報 本文データは学協会の許諾に基づきCiNiiから複製したものである。
キーワード
主題Scheme Other
主題 Porous Ceramics
キーワード
主題Scheme Other
主題 Fracture Toughness
キーワード
主題Scheme Other
主題 Indentation Fracture Method
キーワード
主題Scheme Other
主題 Single-edge Precracked Beam Method
キーワード
主題Scheme Other
主題 Single-Edge V-Notched Beam Method
キーワード
主題Scheme Other
主題 R-curve Behavior
抄録
内容記述 The indentation fracture (IF) method, the single-edge precracked beam (SEPB) method, and the single-edge V-notched beam (SEVNB) method were applied to evaluate the fracture toughness of four kind of porous ceramics of SiC, Al2O3 and Mg2Al4Si5O18 with porosity ranging from 37 to 43%. The microstructures of these materials were composed of ceramics grains, glassy grain boundaries and pores. Each grain was joined together with the glassy grain boundary phase. The IF and SEPB methods were not applicable because both precracks and indenter traces were not visible. On the other hand, the SEVNB method was applicable because the V-notch could be easily machined by grinding. In the case of the SEVNB method, the applied load versus back-face strain plots under four point bending showed nonlinearity prior to the maximum load. The R-curve behavior was estimated from the compliance change of specimens. The fracture toughness of porous ceramics was smaller than that of dense ceramics, and increased with increasing crack extension. Since the stable crack predominantly propagated along glassy grain boundaries, the R-curve behavior depended on the loading rate and matrix grain size. The increment of R-curve by grain briding got bigger for coarser-grain sized ceramics.
内容記述タイプ Abstract
出版者
出版者 日本機械学会
言語
言語 jpn
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
関連情報
関連タイプ isVersionOf
関連識別子
識別子タイプ URI
関連識別子 http://ci.nii.ac.jp/naid/110002369940/
ISSN
収録物識別子タイプ ISSN
収録物識別子 0387-5008
書誌情報 日本機械学會論文集 A編

巻 67, 号 660, p. 1378-1385, 発行日 2001-08
フォーマット
application/pdf
著者版フラグ
値 publisher
URI
識別子 http://hdl.handle.net/2237/9161
識別子タイプ HDL
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