Research Article
Fatigue Strength Evaluation for Remanufacturing Impeller of Centrifugal Compressor Based on Modified Grey Relational Model
Table 2
Design parameters of the reference impeller.
| | Parameter name | No. 0 | No. 1 | No. 2 | No. 3 | No. 4 | No. 5 |
| | Width of blade inlet | b1 (mm) | 38.9 | 29 | 72 | 57 | 45 | 59 | | Diameter of blade inlet | D1 (mm) | 357 | 225 | 480 | 340 | 245 | 324 | | Blade thickness | t (mm) | 2.5 | 2.8 | 3.8 | 6 | 5.6 | 5 | | Velocity of blade inlet | c1 (m/s) | 73 | 134.5 | 155.5 | 89.5 | 81.2 | 120 | | Installation angle of blade inlet | β1A (°) | 33 | 30 | 25 | 25 | 20 | 28 | | Slope of wheel cover | θ (°) | 9.12 | 9 | 7.5 | 0 | 6 | 9.1 | | Curvature radius of blade | R (mm) | 434.5 | 325 | 576 | 413 | 397 | 512 |
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