Considering the effect of ageing factors to composite in engineering, an advanced estimating equation of ageing on polymer matrix composites residual strength is founded by studying and analyzing the ageing equation proposed by Gunyaev r m. The advanced ageing equation which is adopted to estimate the residual strength is fit here by least squares method with the ageing experimental data. The results indicate that the theoretical calculating data is consistent with the experimental data. The advanced ageing equation used among different ageing environment as considering equivalent effect of ageing factors can reduce experimental times of the same material in different ageing environment. The work provides a reference for ageing equivalent study of polymer matrix composites between nature ageing and accelerated ageing.%通过对r.M.古尼耶夫提出的老化方程的分析研究,考虑了各种老化因素在实际工程中对复合材料的影响,建立了改进的聚合物基复合材料老化剩余强度估算方程.结合老化试验数据,采用最小二乘非线性回归计算方法拟合老化方程,并进行剩余强度估算.结果表明,理论计算结果与试验结果吻合较好,同时由于改进公式考虑了环境老化因素对材料影响的等效,使得改进公式能够在不同老化环境中进行等效计算,可以减少同种材料的不同老化环境试验次数.本实验对聚合物基复合材料在自然老化和加速老化环境下的等效研究具有参考价值.
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