An Evaluation of Linear Cumulative Damage (Miner's Law) Using Kinetic Crack Growth Theory
An Evaluation of Linear Cumulative Damage (Miner's Law) Using Kinetic Crack Growth Theory
复制标题
使用动态裂纹扩展理论评估线性累积损伤（米纳定律）
DOI：
10.1023/a:1021297914883
复制
发表时间：
2002
影响因子：
2.5
通讯作者：
R. Christensen
中科院分区：
文献类型：
--
作者：
R. Christensen
以蠕变破坏函数的基组作为一类材料的破坏性质的描述，可以用各种损伤规律来预测任何应力历史下的破坏。一个特别方便的形式是迈纳定律，也被称为线性累积损伤。然而，这种损害规律完全是经验性的，价值不确定。采用聚合物裂纹扩展动力学理论计算线性累积损伤。液晶显示器总体上不令人满意。然而，有一个重要的子类的情况下，它确实表现良好，这可能是重要的加速测试方法的聚合物。
Taking a basis set of creep failure functions as specifying the failureproperties for a class of materials, various damage laws can be used topredict failure under any type of stress history. A particularlyconvenient form is that of Miner's law also known as Linear CumulativeDamage. However, such damage laws are entirely empirical and ofuncertain value. A kinetic crack growth theory developed for polymers isused to evaluate Linear Cumulative Damage. LCD is found to be generallyunsatisfactory. However, there is an important sub-class of cases whereit does perform well, and this can be of importance in an acceleratedtesting methodology for polymers.