SYMPOSIA PAPER Published: 01 January 1979

Fracture Toughness: The Role of Indentation Techniques


The quantitative measurement of the radial fractures that occur around hardness indentations in brittle materials has long been advocated as a measure of the fracture toughness. The evolution of the technique and the fundamental basis for toughness determination by indentation are described. The latest experimental results on a range of brittle materials are used to demonstrate the utility of the technique. Finally, the role of the technique, within the toughness testing repertoire, is discussed.

Author Information

Evans, AG
University of California, Berkeley, Calif.
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Developed by Committee: E08
Pages: 112–135
DOI: 10.1520/STP36630S
ISBN-EB: 978-0-8031-4747-8
ISBN-13: 978-0-8031-0365-8