Creep tests of 2D-C/SiC in a wet oxidizing atmosphere were implemented for six samples. The loading process was monitored by acoustic emission (AE). Principal component analysis and a fuzzy clustering algorithm were used to perform pattern recognition of the AE data. All of the AE events were divided into four clusters and labelled as matrix cracking, interfacial damage, fiber breakage and fiber-bundle breakage respectively, according to their physical origin. It was found C/SiC has very scattered rupture lifetimes even under the same test conditions, and the evolution of AE events corresponding to fiber failure is quite different. With increasing rupture lifetime, the AE energy of fiber-bundle breakage is higher, while the number of these events is less. Thus, it is concluded that local oxidation and damage development is the controlling failure mechanism for short-lived specimens and uniform oxidation and damage development is the controlling failure mechanism for long-lived specimens.

在湿氧化气氛中对6个样品进行了2D-C / SiC蠕变测试。加载过程通过声发射（AE）进行监控。主成分分析和模糊聚类算法用于执行AE数据的模式识别。根据其物理起源，将所有AE事件分为四个簇，分别标记为基质开裂，界面破坏，纤维断裂和纤维束断裂。结果发现，即使在相同的测试条件下，C / SiC的断裂寿命也非常分散，并且与纤维失效相对应的AE事件的演化也大不相同。随着断裂寿命的延长，纤维束断裂的AE能量更高，而这些事件的次数更少。从而，