Damage detection of C/C composites using ESPI and SQUID techniques
Damage detection of C/C composites using ESPI and SQUID techniques
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DOI：
10.1016/j.compscitech.2004.11.017
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发表时间：
2005-06
影响因子：
9.1
通讯作者：
H. Hatta;M. Aly-Hassan;Y. Hatsukade;S. Wakayama;H. Suemasu;N. Kasai
中科院分区：
文献类型：
--
作者：
H. Hatta;M. Aly-Hassan;Y. Hatsukade;S. Wakayama;H. Suemasu;N. Kasai
研究了声发射（AE）、电子散斑干涉（ESPI）和超导量子干涉器件（SQUID）三种无损评价（NDE）技术在碳碳复合材料（C/Cs）损伤检测中的应用。采用紧致拉伸和双面缺口几何方法，分别对二维层合（2D）和三维增强（3D）碳/碳（C/C）复合材料的断裂过程进行了观察。C/C的断裂过程复杂，分为不同的断裂步骤。声发射技术有助于区分这些断裂步骤。ESPI被证明可以有效识别在极限拉伸破坏之前发生的2D-C/Cs的小规模分层。另一方面，即使在局部纤维断裂的情况下，SQUID电流映射也能清楚地显示纤维失效。
Three non-destructive evaluation (NDE) techniques, Acoustic Emission (AE), Electronic Speckle Pattern Interferometry (ESPI), and Superconducting Quantum Interference Device (SQUID) current mapping, were examined for use in the damage detection of carbon–carbon composites (C/Cs). These methods were applied to observe the fracture processes of two-dimensionally-laminated (2D) and three-dimensionally reinforced (3D) carbon/carbon (C/C) composites using compact tension and double-edge-notched geometry. The fracture processes of the C/Cs were complicated and were divided into different fracture steps. The AE technique was useful to distinguish between these fracture steps. ESPI was shown to be effective at identification of small-scale delamination of the 2D-C/Cs occurring before the ultimate tensile failure. On the other hand, SQUID current mapping clearly indicated fiber failure, even in cases involving local fiber fracture.