Probing the fracture toughness of brittle materials by measuring the crack-length generated from indentation experiments is often practiced in many areas of materials research. However, when the cracks are too small to be measured accurately, an energy-based approach has recently been proposed by several researchers. In this letter, this approach is presented and compared with the well-known crack-length method on six different materials. We found that the energy-based method and crack-length method yield significantly different results for all materials but converge if the energy method is modified with a correction factor. Graphical abstract: [Figure not available: see fulltext.]
|Number of pages||4|
|State||Published - Apr 2022|
Bibliographical noteFunding Information:
This work was partially supported by the Vehicle Technologies Office of the U.S. Department of Energy Battery Materials Research (BMR) Program under Contract Number DD-EE0008863 and through a collaboration between the University of Kentucky and Sandia National Laboratories and was supported by the US Department of Energy Office of Electricity Energy Storage Program, managed by Dr. Imre Gyuk.
© 2022, The Author(s), under exclusive licence to The Materials Research Society.
ASJC Scopus subject areas
- Materials Science (all)