Damage mode effects on fracture strength of ultra-high temperature ceramics

被引：4
|
作者：
Li W.-G. [1 ]
Li D.-Y. [1 ]
Yao X.-F. [2 ]
Fang D.-N. [2 ,3 ]
机构：
[1] College of Resource and Environment Science, Chongqing University
[2] AML, Department of Engineering Mechanics, Tsinghua University
[3] LTCS and College of Engineering, Peking University
来源：
Frontiers of Materials Science in China | 2010年 / 4卷 / 3期
基金：
中国国家自然科学基金;
关键词：
high-temperature strength; micro-structure; sensitivity; thermal-damage; ultra-high temperature ceramic (UHTC);
D O I：
10.1007/s11706-010-0087-z
中图分类号：
学科分类号：
摘要：
Improving the fracture strength of ceramics has been one of the most important concerns in the ceramics field, and highly accurate evaluation of the fracture strength of ceramics is the right foundation of this topic. In this paper, we analyze fracture strength by using a previously established temperature-damage-dependent strength model. Sensitivities of fracture strength to relative parameters are analyzed, and the influences of different failure modes and typical sizes of different micro-structural characteristics on the fracture strength of ultra-high temperature ceramics (UHTCs) are discussed. This study can provide a theoretical basis and technical platform for the design, application and reliability assessment of UHTCs in applications. © 2010 Higher Education Press and Springer-Verlag Berlin Heidelberg.
引用
收藏
页码：255 / 258
页数：3
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