Insights into Cruciform Sample Design
| Autor: | Tim Foecke, Mark A. Iadicola, Adam A. Creuziger, Dilip K. Banerjee, E. Rust |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Digital image correlation Materials science business.industry General Engineering 02 engineering and technology Structural engineering 021001 nanoscience & nanotechnology Key features 01 natural sciences Article Premature failure Cruciform 0103 physical sciences Sampling design General Materials Science 0210 nano-technology business Fillet (mechanics) Stress concentration |
| Zdroj: | JOM. 69:902-906 |
| ISSN: | 1543-1851 1047-4838 |
| Popis: | Four different cruciform sample designs, based on the work of Abu-Farha et al. (JOM 61:48, 2009) were studied. Key features of these designs are a recessed pocket with fillet and re-entrant corners. These samples were shown via digital image correlation to achieve widely differing strain values inside and outside the pocket. From the results of these tests, there are two competing failure mechanisms in the sample. The pocket region is affected by stress concentrations caused by the fillet, and re-entrant notches lead to strain-limited constraints similar to diffuse and localized necks in uniaxial samples. Balancing these two constraints determines the success or premature failure of the sample. |
| Databáze: | OpenAIRE |
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