This paper presents a modified Damage Equalization Method with statistical features for life estimation of dielectrics. The paper postulates damage as a random variable, which resulted in establishing a relationship between the Weibull scale, shape parameters and the endurance coefficient ‘n’ of inverse power law. By the modified DEM (m-DEM), for the first time, a range of values of nn for each material is proposed, which is useful for design engineers. Until now, the endurance coefficient of inverse power law and strength constant were treated as constants. Here, it is shown that these coefficients do have statistical features or variations. Experiments are conducted on oil impregnated paper and LDPE samples using accelerated step-stresses for life estimation. The results of the estimation of endurance coefficient are compared with existing methods and reasonable conclusions are drawn in favor of the proposed method.

中文翻译：

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用于电介质寿命估计的改进损伤均衡方法


本文提出了一种改进的损伤均衡方法，具有用于电介质寿命估计的统计特征。该论文将损伤假设为随机变量，从而建立了威布尔尺度、形状参数和逆幂律耐力系数“n”之间的关系。通过改进的 DEM (m-DEM)，首次提出了每种材料的 nn 值范围，这对于设计工程师来说非常有用。到目前为止，逆幂律的耐力系数和强度常数都被视为常数。这里，表明这些系数确实具有统计特征或变化。使用加速阶跃应力对油浸纸和 LDPE 样品进行实验以进行寿命估计。将耐久系数的估计结果与现有方法进行了比较，得出了支持该方法的合理结论。