Abstract
The main advantages of three-dimensional braided composite material are its better impact toughness and fatigue resistance. It is used in key components of China’s first lunar probe satellite "Chang’e-1", and the testing for it is in secret stage in the foreign. Therefore, the research of testing method is specially significant. The main research contents included the state of internal fiber distribution, fiber breakage, material crack, internal bubble size and location, etc. Research topic provides a theoretical basis for the impact of the different inherent defects to the magnetic field of SQUID, and a test method of inherent defects for SQUID-based three-dimensional braided composite materials. The results show that the larger defects are, the stronger the magnetic signal SQUID detected in this region is, namely eddy current in this location is changed significantly. In general, for the deep defects, the lower excitation frequency should be used, while for surface defects the high excitation frequencies should be used.
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Chen, H., Wan, Z. (2011). SQUID-Based Internal Defect Detection of Three-Dimensional Braided Composite Material. In: Wu, Y. (eds) Computing and Intelligent Systems. ICCIC 2011. Communications in Computer and Information Science, vol 233. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-24010-2_2
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DOI: https://doi.org/10.1007/978-3-642-24010-2_2
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