Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
768031 | Engineering Fracture Mechanics | 2007 | 12 Pages |
Abstract
The conditions for cone cracks to develop due to a conical indentation are investigated. Axisymmetric numerical simulations, based on the finite element method, are conducted, assuming a linear-elastic, perfectly plastic material. A superposition scheme is employed to simulate a range of crack geometries, including various lengths and orientations. The results indicate that the class of cracks investigated is prone to develop internally in brittle materials. Based on a reversed analysis, a new technique is proposed for measuring the fracture toughness in bulk material and thick coatings through one simple indentation test when the cone crack appears.
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Authors
J. Yan, A.M. Karlsson, X. Chen,