Using this model the permanentdistortion and work life in long term under thermal cycling can be predicted based on a few test data.
利用该模型，根据少量试验数据可预示长期冷热循环下的永久变形或工作寿命。
2
On the basis of relationship between permanentdistortion and thermal cycling number, we present mathematical model in terms of power function.
根据实测的永久变形与温度循环次数的关系，提出了一个幂函数的数学模型。
3
With the aging time increasing, degradation effect became more superior, mechanical property and crosslink density decreased, while Compression permanentdistortion increased.