| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5436121 | Acta Materialia | 2017 | 7 Pages |
Abstract
Focused ion beam machined microcantilevers are frequently used for fracture mechanics analysis of inhomogeneous solids at the micrometer scale. A finite element method study about the influence of the pre-crack geometry on the apparent fracture toughness is provided. We discuss the influence of material bridges and the effect of rounded pre-crack corners when two dimensional models are employed to evaluate the fracture toughness. We conclude with a guideline for introducing an optimized pre-crack.
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Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Steffen Brinckmann, Kurt Matoy, Christoph Kirchlechner, Gerhard Dehm,