核能电路模块可靠性仿真物理参数测量方法研究

Research on Measurement Methods of Physical Parameters in Reliability Simulation of Nuclear Power Circuit Modules

为了得到完整、准确的故障物理模型,以便用于可靠性建模仿真,需分别利用相应的参数测试设备对这些参数进行试验测试。研究了利用显微力学测试系统进行材料弹性模量和泊松比的测试,利用高温热膨胀仪进行材料热膨胀系数的测试,利用导热系数测试仪进行材料导热系数的测试。通过某型核电SiP控制模块的可靠性仿真过程应用说明了所述物理参数测量方法的应用意义。

In order to obtain complete and accurate malfunction physical models for reliability modeling and simulation,corresponding testing devices are needed to test all required parameters,respectively.The measurement of elastic modulus and Poisson's ratio by micromechanical test system is studied.The thermal expansion coefficient of materials is tested by high temperature thermal expansion instrument,and the thermal conductivity of materials is tested by thermal conductivity tester.The application of the physical parameter measurement method is illustrated by the reliability simulation process of a nuclear power SiP control module.