Thermal Shock Fracture Testing for Float Glass by Infrared Radiation Technique
Thermal Shock Fracture Testing for Float Glass by Infrared Radiation Technique
复制标题
红外辐射技术对浮法玻璃进行热冲击断裂试验
DOI：
10.2109/jcersj.103.960
复制
发表时间：
1995
期刊：
影响因子：
--
通讯作者：
T. Endo
中科院分区：
文献类型：
--
作者：
H. Awaji;T. Endo
先前提出了红外辐射加热方法作为评估陶瓷抗热震性能的新技术，并表达了带有边缘裂纹的盘状试样的热冲击断裂韧性和应力强度因子的概念。该方法使用薄圆盘，通过红外线在中心区域以恒定的热通量加热。该技术使得可以直接根据充电功率和断裂时间来评估热冲击强度 R1c 和热冲击断裂韧性 R2c，尽管 R1c 和 R2c 包含测试材料的热性能。在本报告中，通过红外辐射加热技术评估了浮法玻璃在室温和高温下的热冲击强度和热冲击断裂韧性，并显示为试样失效时温度的函数。还将实验获得的热冲击参数与结合浮法玻璃随温度变化的机械性能计算出的估计值进行了比较。
An infrared radiation heating method was proposed previously as a new technique for estimating thermal shock resistance of ceramics, and a concept of thermal shock fracture toughness and stress intensity factors for a disk-shaped specimen with an edge crack was expressed. The method uses a thin circular disk which is heated by infrared ray at the central area with a constant heat flux. The technique makes it possible to evaluate the thermal shock strength, R1c, and thermal shock fracture toughness, R2c, directly from the electric power charged and the time to fracture, despite the fact that R1c and R2c consist of the thermal properties of the material tested. In this report, the thermal shock strength and the thermal shock fracture toughness for float glass at room and high temperature are evaluated by the infrared radiation heating technique, and shown as a function of temperature when the specimen failures. The thermal shock parameters obtained experimentally are also compared with the estimated values which are calculated by combining the temperature-dependent mechanical properties of float glass.