Abstract
Due to its high strength and hardness, high temperature resistance and low cost, alumina ceramics are widely used in a large range of applications such as armor systems, aerospace industry. In these cases, the ceramic materials inevitably subjected to dynamic loading, its dynamic mechanical properties consequently become the criterion. Fracture toughness is the key parameter in fracture mechanics, which defines a material’s resistance to crack propagation for plain strain loading. Measuring this parameter requires knowledge of the specimen geometry and a preset crack within the material. Metals are ductile materials and have traditionally used pre-notch methods to grow a natural crack starter. However, it’s difficult to machine a three-point bending (TPB) specimen for brittle materials because of low tensile strength.
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Chen, P., Guo, B., Chen, J. (2018). Comparative Study of the Dynamic Fracture Toughness Determination of Brittle Materials Using the Kolsky-Hopkinson Bar Machine. In: Othman, R. (eds) The Kolsky-Hopkinson Bar Machine. Springer, Cham. https://doi.org/10.1007/978-3-319-71919-1_5
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DOI: https://doi.org/10.1007/978-3-319-71919-1_5
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