Abstract
Modal testing of large structures such as wind turbine blades poses several challenges. Applied test setup configuration, test specimen mounting and measurement equipment are known to affect the test results. This paper presents a comparison study of the modal tests of nominally identical 14.3 m long blades. Blade A was supported in free-free boundary conditions and tested with the Experimental Modal Analysis using accelerometers. Blade B was clamped to a concrete block and tested with Operational Modal Analysis and strain gauges. The modes and corresponding natural frequencies obtained from both test cases were compared and correlated with the numerical models of the blades.
Original language | English |
---|---|
Title of host publication | Topics in Modal Analysis & Testing |
Editors | Michael L. Mains, Brandon J. Dilworth |
Number of pages | 10 |
Volume | 8 |
Place of Publication | Cham |
Publisher | Springer |
Publication date | 2019 |
Pages | 143-152 |
Chapter | 14 |
ISBN (Print) | 978-3-030-12683-4 |
ISBN (Electronic) | 978-3-030-12684-1 |
DOIs | |
Publication status | Published - 2019 |
Event | IMAC-XXXVII Conference and Exposition on Structural Dynamics 2019: It's not just modal anymore - Rosen Plaza Hotel, Orlando, United States Duration: 28 Jan 2019 → 31 Jan 2019 Conference number: 37 https://eventegg.com/sem-imac/ |
Conference
Conference | IMAC-XXXVII Conference and Exposition on Structural Dynamics 2019 |
---|---|
Number | 37 |
Location | Rosen Plaza Hotel |
Country/Territory | United States |
City | Orlando |
Period | 28/01/2019 → 31/01/2019 |
Internet address |
Series | Conference Proceedings of the Society for Experimental Mechanics Series |
---|---|
ISSN | 2191-5644 |
Keywords
- Experimental modal analysis
- Operational modal analysis
- Strain modal analysis
- Wind turbine blade
- Structural dynamics identification