Analysis of Temperature/Stress Distributions in Thermal Shocked Ceramic Disks in Relation to Temperature-Dependent Properties
Analysis of Temperature/Stress Distributions in Thermal Shocked Ceramic Disks in Relation to Temperature-Dependent Properties
复制标题
热冲击陶瓷盘中与温度相关特性相关的温度/应力分布分析
DOI：
10.2109/jcersj.106.358
复制
发表时间：
1998
影响因子：
1.1
通讯作者：
T. Nishikawa
中科院分区：
文献类型：
--
作者：
H. Awaji;Toshifumi Takahashi;N. Yamamoto;T. Nishikawa
作为从电荷直接推定热冲击参数的技术，以往提出了红外线照射加热法。在这种方法中，薄圆盘在其中心区域以恒定的热通量用红外线照射。在这份报告中，我们分析了温度/热应力分布在磁盘中的陶瓷的温度相关的材料特性，即温度分布与温度相关的热导率和热扩散率，和热应力分布与温度相关的热导率，热扩散率和热膨胀。结果表明，这些温度相关的属性产生显着的影响的温度/应力分布在磁盘上。通过选择适当的温度相关性能组合，提出了一些降低陶瓷结构热应力的可能性。
An infrared irradiation heating method has previously been proposed as a technique for directly estimating thermal shock parameters from an electric charge. In this method, a thin circular disk is irradiated with infrared rays over its central area at a constant heat flux. In this report, we analyzed the temperature/thermal stress distributions in the disk in relation to the temperature-dependent material properties of ceramics, namely the temperature distributions relating to temperature-dependent thermal conductivity and thermal diffusivity, and the thermal stress distributions relating to temperature-dependent thermal conductivity, thermal diffusivity and thermal expansion. The results reveal that these temperature-dependent properties yield marked effects on the temperature/stress distributions in the disk. A number of possibilities are suggested for decreasing thermal stresses in ceramic structures by selecting appropriate combinations of temperature-dependent properties.