Papers by Author: Lin Hu Du

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Authors: Yang Zhou, Guang Jiang Yuan, Jian Feng Tong, Lin Hu Du, Da Ming Chen, Hong Xiang Zhai
Abstract: The dynamic process of crack initiation and propagation in a SiC/BN-Al2O3 laminated composite was observed in situ by scanning electron microscopy. During a bending test with a single-edge notched-beam specimen, an interfacial crack first initiated in the interlayer near the notch tip, after which a through-thickness crack formed in the matrix layer at the notch tip. After the through-thickness crack had grown across the first matrix layer, it was deflected by the next interlayer and again became an interfacial crack. Interfacial cracks and through-thickness cracks were generated alternately until the composite failed. The load-displacement plot of the laminated composite exhibited several peaks, each caused by one propagation of a through-thickness crack. The toughening mechanisms of the laminated composite included crack deflection, interfacial cracking, and through-thickness branch cracking.
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Authors: Yu Zhou, B.T. Li, Lin Hu Du, X.Y. Zhao, Jiu Peng Zhao, Da Ming Chen, Ming Gao Yan
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