Reinforcement by crack-tip blunting in porous ceramics

被引：99

作者：

Deng, ZY

She, JH

Inagaki, Y

Yang, JF

Ohji, T

Tanaka, Y

机构：

[1] Natl Inst Mat Sci, Metal Matrix Composite Res Grp, Tsukuba, Ibaraki 3050047, Japan

[2] Natl Inst Adv Ind Sci & Technol, Synergy Mat Res Ctr, Nagoya, Aichi 4638687, Japan

[3] Fine Ceram Res Assoc, Synergy Ceram Lab, Nagoya, Aichi 4638687, Japan

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2004年 / 24卷 / 07期

关键词：

modeling; porous ceramics; toughness and toughening; crack blunting;

D O I：

10.1016/S0955-2219(03)00365-0

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A crack-tip blunting mechanism in porous ceramics was identified in this study. The reinforcement by crack tip blunting in porous ceramics was analyzed quantitatively, based on a grain fracture model. The investigation revealed that the crack tip blunting increases the fracture toughness of porous ceramics, depending on pore morphology and grain arrangement. The theoretical predictions were in good agreement with the experimental results. (C) 2003 Elsevier Ltd. All rights reserved.

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页码：2055 / 2059

页数：5

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