| ASTM | American Society for Testing and Materials |
| CF | Carbon Fibre |
| FESEM | Field Emission Scanning Electron Microscopy |
| FRP | Fibre Reinforced Polymer |
| GF | Glass Fibre |
| GFR | Glass Fibre Reinforced |
| Micro-CT | Micro-Computed Tomography |
| MoS2 | Molybdenum Disulphide |
| PA6 | Polyamide 6 |
| PTFE | Polytetrafluoroethylene |
| SiC | Silicon Carbide |
| TiO2 | Titanium Dioxide |
| TPU | Thermoplastic Polyurethane |
| Ws | Specific Wear Rate |
| Xc | Degree of Crystallinity |
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