Research Article
Energy and Fatigue Damage Evolution of Sandstone under Different Cyclic Loading Frequencies
Table 3
Cyclic loading test results.
| Specimen | σmax (MPa) | σmin (MPa) | f (Hz) | Failure strength (MPa) | Cycle number |
| CF1-1 | 45 | 25 | 0.5 | 45 | 869 | CF1-2 | 45 | 25 | 45 | 821 | CF1-3 | 45 | 25 | 45 | 897 | CF2-1 | 45 | 25 | 1.0 | — | 2000 | CF2-2 | 45 | 25 | — | 2000 | CF2-3 | 45 | 25 | — | 2000 | CF3-1 | 45 | 25 | 2.0 | — | 2000 | CF3-2 | 45 | 25 | — | 2000 | CF3-3 | 45 | 25 | — | 2000 |
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