Journal
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
Volume 464, Issue 2099, Pages 2967-2984Publisher
ROYAL SOC
DOI: 10.1098/rspa.2008.0077
Keywords
indentation; fracture; numerical analysis
Categories
Funding
- Ministry of Education, Culture, Sports, Science and Technology, Japan [19760075]
- TEPCO research foundation
- National Science Foundation [CMMI-0407743, CMMI-CAREER-0643726]
- Grants-in-Aid for Scientific Research [19760075] Funding Source: KAKEN
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Based on the stress fields formed upon Vickers indentation, the radial crack and halfpenny crack systems are analysed separately using finite-element analyses. The crack length is correlated with the stress intensity factor (SIF) at the crack front and material elastoplastic properties via explicit relationships, from which a reverse analysis can be carried out such that the critical SIF (fracture toughness) can be readily derived once the crack length is measured. The proposed technique is validated by comparing with experimental data in the literature as well as parallel experiments of Vickers indentation-induced cracking.
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