Table 3 The elastic modulus of specimens with different anisotropy angles under various Cyclic loading-unloading rates.

From: The influence of cyclic loading-unloading rates on the uniaxial mechanical anisotropy of coal

Anisotropy angle (º)

Elastic modulus (GPa)

0.025 MPa/s

0.050 MPa/s

0.100 MPa/s

0º

0.75

0.69

0.78

22.5º

0.25

0.23

0.19

45º

0.17

0.18

0.20

67.5º

0.32

0.30

0.31

90º

0.45

0.64

0.39

Average value

0.39

0.41

0.37

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