Single fiber push-out characterization of interfacial mechanical properties in unidirectional CVI-C/SiC composites by the nano-indentation technique

In this work, a new model material, the unidirectional CVI-C/SiC was developed to investigate the interfacial mechanical properties of the woven ceramic matrix composites. Single fiber push-out/push-back tests with the Berkovich indenter were conducted on the thin sliced specimens by the nano-indentation technique. In addition, both the neighboring fibers and the distant fibers (fibers surrounded by not-pushed fibers) were tested. And in order to give a detailed illustration of interfacial crack propagation and failure mechanism, each sector of the push-out process was analyzed at length.