with the disposal of the data, we get pmma's density of crazing damage in different temperature.
经数据处武汉理工大学硕士学位论文理,得到了不同温度条件下,pmma试件银纹损伤面密度值;
and a model is built to describe the crazing damage density with stress and time for mdyb3 pmma using of nonlinear fitting based on hyperbolic function.