Abstract
Based on the stress fields formed upon Vickers indentation, the radial crack and half-penny 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. © 2008 The Royal Society.
| Original language | English |
|---|---|
| Pages (from-to) | 2967-2984 |
| Number of pages | 18 |
| Journal | Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences |
| Volume | 464 |
| Issue number | 2099 |
| Early online date | 17 Jun 2008 |
| DOIs | |
| Publication status | Published - 8 Nov 2008 |
| Externally published | Yes |
Funding
The work of A.Y. was supported in part by Grant-in-Aid for Young Scientist of (B) (no. 19760075) of the Ministry of Education, Culture, Sports, Science and Technology, Japan, and Research Grant (General research for Electricity & Energy) of TEPCO research foundation. The work of X.C. was supported in part by the National Science Foundation CMMI-0407743 and CMMI-CAREER0643726.
Keywords
- Fracture
- Indentation
- Numerical analysis