Dynamic Compression Tests – Current Achievements and Future Development
In this paper a modified arrangement of the DICT technique was introduced. Miniatur- ization of bar and use of shadow principle to make a measurement of displacement allow to obtain strain rate up to 2.2×105 s−1. Commonly used methods of elimination of friction, iner- tia and adiabatic heating were...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Institute of Fundamental Technological Research
2014-08-01
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| Series: | Engineering Transactions |
| Subjects: | |
| Online Access: | https://et.ippt.pan.pl/index.php/et/article/view/147 |
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| Summary: | In this paper a modified arrangement of the DICT technique was introduced. Miniatur- ization of bar and use of shadow principle to make a measurement of displacement allow to obtain strain rate up to 2.2×105 s−1. Commonly used methods of elimination of friction, iner- tia and adiabatic heating were presented. In order to estimate the rate sensitivity of a material (tantalum), quasi-static and SPHB tests were performed at room temperature within the rate spectrum ranging from 5×10−4 s−1 to 103 s−1. The final true stress versus true strain curves at different strain rates were corrected to a constant temperature and zero friction. |
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| ISSN: | 0867-888X 2450-8071 |