| Autor: |
Fruhstorfer, Jens, Gruber, Dietmar, Harmuth, Harald |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2023, Vol. 2894 Issue 1, p1-7, 7p |
| Abstrakt: |
This study investigates the potential of digital image correlation (DIC) to analyze energy dissipation occurring during wedge splitting tests. Two alumina refractories showing a different matrix density with a maximum grain size of 3 mm were investigated. The denser matrix showed higher widths of delamination between aggregate grains and matrix. The DIC analyses were performed with two resolutions. One allowed to evaluate the fracture process zone (FPZ), the other visualized the macrocrack (MC) path (incl. branching) without the FPZ. In both samples, multiple strain concentration sites occurred, but more in the denser sample. In this sample, the following connection of these sites during propagation of the MC led to MC deflection, but only a small FPZ developed. For the less dense sample, the developing FPZ was larger. This indicates a higher contribution of events outside the crack tip to the fracture process. Consequently, it showed a higher fracture energy than the denser material. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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