Table 4.
Specimen material properties.
| CFRP | |
| Density (g/cm3) | 1.575 |
| Hardness (HRB) | 68–72 |
| Transverse elasticity modulus (GPa) | 9.65 |
| Interface | |
| Interfacial bonding strength (MPa) | 30 |
| Interfacial equivalent modulus kb (GPa/m) | 115 |
| Carbon fiber (70%.vol) | |
| Density (g/cm3) | 1.8 |
| Young’s modulus (GPa) | 230 |
| Transverse elasticity modulus (GPa) | 19.6 |
| Axial tensile strength (GPa) | 3.45 |
| Shear strength (GPa) | 0.38 |
| Poisson’s ratio | 0.3 |
| Fracture toughness (J/m2) | 2 |
| Elongation at break (%) | 1.5 |
| Monofilament diameter (μm) | 7.0 |
| Vinyl resin (30%.vol) | |
| Density (g/cm3) | 1.05 |
| Young’s modulus (GPa) | 3.4 |
| Axial tensile strength (MPa) | 85 |
| Shear strength GPa) | 1.02 |
| Poisson’s ratio | 0.4 |
| Fracture toughness (J/m2) | 500 |
| Elongation at break (%) | 5.5 |
| Heat deflection temperature (HDT) (℃) | 101 |