Table 3 Fitting coefficients of peak strain versus loading pressure curves.

From: Dynamic tensile properties, deformation, and failure testing of impact-loaded coal samples with various water content

Water-content type

d

e

f

Correlation coefficient R2

Dry

24.714

 − 12.637

2.144

0.9871

Natural

15.914

 − 8.429

2.400

0.9358

Saturated

6.085

3.737

 − 0.475

0.9674

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