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- W2399145265 abstract "A newly developed experimental technique is used to investigate the failure behavior of ceramics in multi-axial compression. The axial loading is provided by a split Kolsky (Hopkinson) compression bar and the radial confinement is provided by shrink fit sleeves on the cylindrical specimens. Confinement pressures on the order of 1 GPa have been achieved. As the confinement is increased on the specimen, the failure mode changes from axial splitting under no confinement to conical faulting under moderate confinement. Experimental data have been obtained for several engineering ceramics in the strain rate range of 10{sup -3} to 10{sup 3} s{sup -1}. The peak or failure strength increases with increasing confinement. The increase in strength over its unconfined strength for a given level of confinement remains independent of the strain rate. The data from multiaxial loading experiments suggest that the engineering ceramics follow the Drucker-Prager model for pressure sensitive dilatant materials. This model is used to predict the localization modes in axi-symmetric geometries. The predictions are compared with experimental results for the limit load and the geometry of the fault. The implications of the proposed constitutive and failure model for the performance of engineering ceramics under multi-axial loading are discussed." @default.
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- W2399145265 date "1995-12-31" @default.
- W2399145265 modified "2023-09-25" @default.
- W2399145265 title "Investigation of failure mode transition in ceramics under confinement" @default.
- W2399145265 hasPublicationYear "1995" @default.
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