Article
On Internal Cone Cracks Induced by Conical Indentation in Brittle Materials
Engineering Fracture Mechanics
Document Type
Article
Publication Date
11-1-2007
Disciplines
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.
DOI
10.1016/j.engfracmech.2006.12.005
Version
Postprint
Publisher's Statement
NOTICE: this is the author’s version of a work that was accepted for publication in Engineering Fracture Mechanics. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Engineering Fracture Mechanics, 74, 16, (11-01-2007); 10.1016/j.engfracmech.2006.12.005
Citation Information
Yan, J., Karlsson, A. M., and Chen, X., 2007, "On Internal Cone Cracks Induced by Conical Indentation in Brittle Materials," Engineering Fracture Mechanics, 74(16) pp. 2535-2546.