聚合物基复合材料自然老化寿命预测方法

The estimating method of atmospheric aging age on polymer matrix composites

通过对大量聚合物基复合材料自然老化数据的分析研究 ,建立了高置信度、高可靠度的自然老化寿命方程 ,从而可以求得工程结构设计中急需的聚合物基复合材料高置信度、高可靠度的自然老化寿命和老化剩余强度。同时 ,还提出了确定该老化方程中参数的小子样方法 ,在精度相同的情况下 ,该方法可以比传统的成组试验法节省 5 0 %以上的试件 ;而在试件数一定的条件下 ,则可以大大提高预测精度。

An equation on atmospheric aging age with high confidence and reliability have been founded by studying and analysing a lot of atmospheric aging data about polymer matrix composites. Then the atmospheric aging age and aging residual strength with high confidence and reliability, which is badly in need of providing in engineering design can be calculated. Meanwhile a litter sample method that can define parameters in this aging equation has been advanced. This method can save above 50 percent specimen comparing with the traditional testing method in-group under the same precision and it can improve precision on estimating greatly with the same amount of specimens. Finally a verifying example has been given.