Validating a facile approach to measuring fracture toughness by instrumented indentation without imaging crack-lengths

Jacob L. Hempel, Andrew Meyer, Ryan Hill, Yang Tse Cheng

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

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.]

Original languageEnglish
Pages (from-to)279-282
Number of pages4
JournalMRS Communications
Volume12
Issue number2
DOIs
StatePublished - Apr 2022

Bibliographical note

Funding 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.

Publisher Copyright:
© 2022, The Author(s), under exclusive licence to The Materials Research Society.

ASJC Scopus subject areas

  • Materials Science (all)

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