球形试样热疲劳试验法和T-n-d值

The Test Method of Thermal Fatigue with Spherical Specimen and T-n-d Values

提出以球形试样来测定材料抵抗热疲劳龟裂能力的试验方法,并提出了以上限温度T,循环次数n,龟裂纹深度d作为衡量这种能力的定量的参数。作者在3种不同类型的材料,13个试样上所进行的试验。

This article gives a method by which the thermal faiigue resistance of engineering materials can be measured through spherial specimen. The pare-meters of upper temperature T, cylc time n and fracture depth d are recommended as the quantitative indexes of measuring the thermal fatigue resistance of engineering materials. Three kinds, thirteen specimens were tested using this method and the test result have proved the feasibility of the method.