LIU Xiaochong (1976-), male, Ph.D., Associate Professor. E-mail: liuchong@nwpu.edu.cn
The turbine rotor component is one of the core components of gas turbine engine (GTE). Based on the inspiration from nature spider web as one of excellent toughness and collaborative bearing characteristics, we proposed an idea of preparing ceramic matrix composites (CMCs) turbine blisk, which has a spider web structure (SWS) preform. We invented a new method of designing SWS preform and prepared SWS-SiC/SiC turbine blisk. The SWS-SiC/SiC turbine blisk was tested via super-spin experiments in room temperature. The results show that its breaking speed reaches to 118 000 r/min (at a blade tip speed of 702.84 m/s), which is 3.09 times greater than that of the conventional 2D-C/SiC turbine disk, and 1.86 times greater than that of the target speed (85 000 r/min) of a GTE turbine blisk. The results of target speed test indicate that the first order frequency, second order frequency and third order frequency of SWS-SiC/SiC turbine blisk can be reduced by 0.41%, 0.03% and 0.26%, respectively.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |