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Figure 14.
Mechanical properties of the material in the gage section of the specimen (X – axial direction, Y – circumferential direction)_
| Parameter | Value | Factor of scatter CV |
|---|---|---|
| Tensile strength Xt | 684 MPa | 4.41 [%] |
| Tensile strength Yt | 638 MPa | 6.45 [%] |
| Compressive strength Xc | 600 MPa | 4.18 [%] |
| Compressive strength Yc | 638 MPa | 3.41 [%] |
| Shear strength S | 75 MPa | 1.62 [%] |
| Modulus Ex | 54.41 GPa | |
| Modulus Ey | 57.72 GPa | |
| Modulus Gxy | 3.66 GPa | |
| Poisson coefficient v12 | 0.041 [-] |
Loading sequence for all tested specimens_
| Number of test | Loading sequence | End of first ramp | End of second ramp |
|---|---|---|---|
| 1 | tension | specimen failure | n. a. |
| 2 | pressure | specimen failure | n. a. |
| 3 | pressure-tension | 100 bar | specimen failure |
| 4 | pressure-tension | 200 bar | specimen failure |
| 5 | pressure-tension | 300 bar | specimen failure |
| 6 | tension-pressure | 10 kN | puncture of matrix |
| 7 | tension-pressure | 20 kN | puncture of matrix |
| 8 | tension-pressure | 30 kN | puncture of matrix |
| 9 | pressure-tension | 150 bar | specimen failure |
| 10 | simultaneous pressure and tension | specimen failure | n. a. |
| 11 | pressure-compression | 100 bar | Specimen failure |
| 12 | pressure-compression | 200 bar | Specimen failure |
| 13 | pressure-compression | 50 bar | Specimen failure |
| 14 | pressure-compression | 150 bar | Specimen failure |
| 15 | compression-pressure | -10 kN | puncture of matrix |
| 16 | compression-pressure | -20 kN | puncture of matrix |
| 17 | compression-pressure | -15 kN | puncture of matrix |