Abstract
Indentation is a commonly used method to evaluate the fracture toughness of brittle materials through crack length measurements. Many models for toughness estimations are available and rely on the assumption that surface traces of the cracks are either of the Half Penny type, Lawn and Evans, [1], Lawn, et al., [2], or of the radial type, Niihara, et al., [3], Niihara, [4]. However, it has been shown that, especially at low loads, the crack morphology depends strongly on material and thus this dependence affects calculated toughness values, Cook and Pharr, [5].
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Pouvreau, C., Wasmer, K., Giovanola, J., Michler, J., Breguet, J.M., Karimi, A. (2006). In-Situ Scanning Electron Microscope Indentation of Gallium Arsenide. In: Gdoutos, E.E. (eds) Fracture of Nano and Engineering Materials and Structures. Springer, Dordrecht. https://doi.org/10.1007/1-4020-4972-2_29
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DOI: https://doi.org/10.1007/1-4020-4972-2_29
Publisher Name: Springer, Dordrecht
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