Research Article
Effects of Cyclic Loading on the Mechanical Properties of Mature Bedding Shale
Table 3
Summary of the fatigue test characteristics.
| Sample number | The upper limit stress | The lower limit stress | Maximum stress level | Minimum stress level | Amplitude level | Frequency (Hz) | Number of failure cycles |
| H-1 | 81.75 | 16.4 | 0.95 | 0.19 | 0.76 | 0.5 | 11 | H-5 | 77.58 | 21.75 | 0.9 | 0.25 | 0.65 | 0.5 | 155 | H-6 | 73.27 | 28.1 | 0.85 | 0.33 | 0.52 | 0.5 | 1856 | H-8 | 68.92 | 34.13 | 0.8 | 0.40 | 0.40 | 0.5 | 5689 | V-1 | 110.64 | 16.2 | 0.95 | 0.14 | 0.81 | 0.5 | 27 | V-3 | 104.85 | 29.12 | 0.9 | 0.25 | 0.65 | 0.5 | 452 | V-4 | 99.02 | 38.44 | 0.85 | 0.33 | 0.52 | 0.5 | 2569 | V-10 | 93.2 | 47.76 | 0.8 | 0.40 | 0.40 | 0.5 | 8956 |
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