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Yang Junru,Song Chuanjuan,Wang Minglan,Zhang Yuekan,Sun Jing 대한기계학회 2016 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.30 No.1
The interface crack propagation problem in the cermet cladding material structure was studied. A comparative propagation propertyparameter (CP) suitable to judge the propagation direction of the interface crack in the cermet cladding material structure was proposed. The interface crack propagation criterion was established. Theoretical models of the CPs for the crack normal to and dwelling on theinterface deflecting separately into the clad, the interface and the substrate were built, and the relations between the CPs and the loadaction angle, the clad thickness ratio and the load were investigated with an example. The research results show that, under the researchconditions, the interface crack will more easily propagate into the clad layer than into the substrate.