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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

Evaluation of Fracture Toughness of Porous Ceramics

http://hdl.handle.net/2237/9181
http://hdl.handle.net/2237/9181
8c5eaefd-5a2a-4ca8-86b4-e05a720e551c
名前 / ファイル ライセンス アクション
JSME_A_46-1-30.pdf JSME_A_46-1-30.pdf (2.0 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2007-12-19
タイトル
タイトル Evaluation of Fracture Toughness of Porous Ceramics
言語 en
著者 SAKAIDA, Yoshihisa

× SAKAIDA, Yoshihisa

WEKO 21061

en SAKAIDA, Yoshihisa

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TANAKA, Keisuke

× TANAKA, Keisuke

WEKO 21062

en TANAKA, Keisuke

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 ja
権利情報 日本機械学会
権利
言語 ja
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 Precrack 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 kinds 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 the R-curve by grain bridging became larger for coarser-grain sized ceramics.
言語 en
内容記述タイプ Abstract
出版者
言語 en
出版者 The Japan Society of Mechanical Engineers
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
関連情報
関連タイプ isVersionOf
識別子タイプ URI
関連識別子 http://ci.nii.ac.jp/naid/10016190963/
ISSN
収録物識別子タイプ PISSN
収録物識別子 1344-7912
書誌情報 en : JSME International Journal Series A

巻 46, 号 1, p. 30-39, 発行日 2003-01
フォーマット
application/pdf
著者版フラグ
値 publisher
URI
識別子 http://hdl.handle.net/2237/9181
識別子タイプ HDL
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