Abstract
The aim of the work in this paper is to demonstrate the feasibility of a standardized modal test procedure for wind turbine blades that is reliable and repeatable with minimal effort. In the current approach, we excite the blade using a set of 3 inertial shakers, placed in various configurations along the length of the blade. The input forces, flat broadband, generated by the shakers are not measured. The baseline or reference test procedure is to excite the blade manually. We show that the natural frequencies extracted from the shaker tests are the same, within the bounds of uncertainty, as the natural frequencies obtained from the reference tests. The investigation is solely experimental and based on modal data collected from a test setup of a 3.4 m long wind turbine blade. A total of 164 modal tests were undertaken including 32 reference tests and 132 tests from 4 different shaker configurations.
| Originalsprog | Engelsk |
|---|---|
| Publikationsdato | dec. 2022 |
| Antal sider | 10 |
| Status | Udgivet - dec. 2022 |