Dynamic Fracture Toughness of Porous Ceramics

被引：38

作者：

Samborski, Sylwester ^{[2
]}

Sadowski, Tomasz ^{[1
]}

机构：

[1] Lublin Univ Technol, Dept Solid Mech, PL-20618 Lublin, Poland

[2] Lublin Univ Technol, Dept Appl Mech, PL-20618 Lublin, Poland

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2010年 / 93卷 / 11期

关键词：

D O I：

10.1111/j.1551-2916.2010.04133.x

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：

The paper presents experimental results of static (K-Ic) and dynamic (K-Id) fracture toughness testing. The tests were performed for two kinds of porous ceramics with various porosity fraction. The influence of porosity content, as well as loading rate on fracture toughness of alumina (Al2O3) and magnesia (MgO) as analyzed. It was found that an increase of initial porosity reduces values of both static and dynamic fracture characteristics. However, values of K-Id were much higher than K-Ic for both kinds of tested materials. In case of Al2O3, they were approximately three times higher, whereas in case of MgO-five to seven times higher depending on the porosity content.

引用

页码：3607 / 3609

页数：3

共 11 条

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