Experimental study on energy evolution and damage characteristics of unloading coal under cyclic loading.

Sci Rep · 2025 · PMC12075643 · PMID 40360642

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a decreasing trendno p-value reported

However, at 35 MPa, the fractal dimension shifts from 1.0471 to 1.1177, and at 40 MPa, it changes from 1.0300 to 1.2135, suggesting a decreasing trend in fractal dimension as the confining pressure increases beyond 30 MPa.

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