Fracture Mode Transition and Energy Dissipation of Brittle Coal Under Confinement Induced by a Flexible Polyurea Coating
Shan Ning, Weibing Zhu, Biao Fu, Pengjun Gao, Zishuo Jia · 2026
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Description
Shan Ning coated brittle coal with flexible polyurea to tame violent breaking in a 2026 study. Stored strain energy in coal can burst out under high stress, so a surface skin that holds sides in may steady failure.
Pressed samples wore layers from 0 to 1.25 mm thick while sound emissions and surface imaging tracked cracks and energy flow. Coatings curbed sideways bulging and shifted failure from sharp splitting toward slow, ductile damage in reported results. Thicker skins also pushed microcracks from shear toward tension types and raised energy soaked up before the peak load.
Catalog record
| CREATOR | Shan Ning, Weibing Zhu, Biao Fu, Pengjun Gao, Zishuo Jia |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 74728 |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |