缺陷演化过程中缺陷温度场的实验研究

本文以缺陷演化过程中的共性－流变与耗散现象为研究对象，利用红外扫描技术，对缺陷演化过程中的热耗散、缺陷温度场的形成及其演变规律进行了实验研究．在此基础上，对缺陷演化过程中缺陷温度场的形成及其演变规律、缺陷间相互作用进行了初步探讨．研究结果表明：缺陷演化过程是一个能量耗散过程，且缺陷演化过程中由于热耗散而形成的缺陷温度场具有分形特性，其分形维数不仅与缺陷间相互作用有关，而且是时间的函数，体现了缺陷演化过程跨越不同层次以及过程中层次间的协同作用效应．

Experimental Research on Defect Temperature Field in Process of Defect Evolution

By using infrared scanning technique, the formation and evolution of defect temperature field and the heat dissipation in the process of defect evolution are investigated experimentally.It is found that defect evolution is a process of energy dissipation and that the defect temperature field caused by heat dissipation exhibits some features of fractal. It is also found that the fractal dimension of the defect temperature field is bot only depending on the interaction among defects but a function of time.