Previous studies have focused on creep damage evolution behavior of components with one isolated notch, but two or more notches may be placed at the components due to the function requirements, the limitation of the structural size, or may be induced by chemical/physical damage processes. In this work, numerical analyses and creep tests on creep damage and interaction behaviors of neighboring notches in components under creep conditions are investigated. Effects of structural configurations on creep damage and interaction behavior are discussed. Results indicate that the notch still indicates a strengthening effect on rupture life of components despite the interaction behavior of the two adjacent notches. A negative interaction effect on rupture life of components with two notches is found. Creep damage and interaction behaviors of the components with two neighboring notches of various distance values are related to structural configurations of the components, including notch acuity ratio, notch open angle and notch depth.

以往的研究主要关注具有一个孤立缺口的部件的蠕变损伤演化行为，但由于功能要求、结构尺寸的限制，或者可能由化学/物理损伤过程引起，部件上可能会设置两个或多个缺口. 在这项工作中，研究了蠕变条件下部件中相邻凹口的蠕变损伤和相互作用行为的数值分析和蠕变试验。讨论了结构配置对蠕变损伤和相互作用行为的影响。结果表明，尽管两个相邻缺口之间存在相互作用，但缺口仍然表明对部件的断裂寿命有强化作用。发现对具有两个缺口的部件的断裂寿命有负面的相互作用影响。