Journal of Materials Science

, Volume 37, Issue 4, pp 865–869 | Cite as

Indentation toughness of ceramics: A modified approach

  • Jianghong Gong
  • Junqiu Wang
  • Zhenduo Guan


The indentation toughness equation proposed by Anstis et al. was re-examined with a particular emphasis on the definition of the hardness parameter used. It was shown that, because of the existence of the well-known indentation size effect (ISE), the apparent hardness defined as the ratio of the applied load to the projected area of the resultant indentation usually varies with the applied load and seems not to be suitable for use in indentation toughness determination. A new equation for determining indentation toughness, in which a load-independent hardness number was incorporated, was proposed.


Polymer Applied Load Projected Area Indentation Size Indentation Size Effect 
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Copyright information

© Kluwer Academic Publishers 2002

Authors and Affiliations

  1. 1.Department of Materials Science and EngineeringTsinghua UniversityBeijingPeople's Republic of China

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