Under the conditions of defective structures with limited creep strain, two parameters, that is, characteristic temperature and characteristic service-life, were introduced in terms of the reference stress of structures. 在有限蠕变变形前提下,定义了两个基于结构参考应力的状态参量:特征温度和特征服役寿命;
And the fiber breakage has very limited influence on the creep damage of the matrix, but it reduces a high stress concentration in the matrix near the fractured surface. This high stress concentration will help the crack enlargement in the matrix by the stress criterions. 纤维断裂对基体蠕变损伤影响有限,但是断面附近产生很高的应力集中,该应力集中将有助于裂纹在基体中的发展。