PRT 센서 및 고속카메라를 이용한 복합재 블레이드의 진동 특성 분석
Analysis of Vibration Behavior of Composite Blade Using PRT sensor and High-Speed Camera
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As the size and weight of blades increase with the recent trend toward larger wind turbines, it is important to ensure the structural integrity of blades. For this reason, blades are made using composite material that is lighter and has high specific stiffness and specific strength. A composite blade consists of upper and lower skins that receive the load directly, a shear web that supports the two skins, and a spar cap that connects the skin and the shear web. Loads generated during operation of the wind turbine can cause debonding damage to spar cap–shear web joints. Debonding damage may induce structural instability of the blade in operation. Therefore, there is a need for a technique to detect debonding damage. The damage detection method mainly uses vibration behavior. However, since vibration behavior is generally acquired by using a contact sensor, there is a limit where there is a difference in structure or it is difficult to attach. In this study, the vibration behavior of a 20 kW class blade was analyzed using a non-contact sensor. The results were compared with data from an accelerometer and strain gauge to ensure the suitability of the PRT sensor and a high-speed camera for vibration behavior measurement for the composite blade.
Abstract
As the size and weight of blades increase with the recent trend toward larger wind turbines, it is important to ensure the structural integrity of blades. For this reason, blades are made using composite material that is lighter and has high specific stiffness and specific strength. A composite blade consists of upper and lower skins that receive the load directly, a shear web that supports the two skins, and a spar cap that connects the skin and the shear web. Loads generated during operation of the wind turbine can cause debonding damage to spar cap–shear web joints. Debonding damage may induce structural instability of the blade in operation. Therefore, there is a need for a technique to detect debonding damage. The damage detection method mainly uses vibration behavior. However, since vibration behavior is generally acquired by using a contact sensor, there is a limit where there is a difference in structure or it is difficult to attach. In this study, the vibration behavior of a 20 kW class blade was analyzed using a non-contact sensor. The results were compared with data from an accelerometer and strain gauge to ensure the suitability of the PRT sensor and a high-speed camera for vibration behavior measurement for the composite blade.
참고문헌 (17)
- 김홍관, "풍력발전용 소형복합재 블레이드의 실규모 구조시험", 대한기계학회논문집 A, 35(11), pp.1407~1413 (2011), 대한기계학회
- Park, S. H., "Structural Analysis and Proof Test of Composite Rotor Blades for Wind Turbine", New & Renewable Energy, 4(3), pp.45~50 (2008)
- Lee, C. H., "Structural design and analysis of a co mposite wind turbine blade", Transactions of the Korean Society of Mechanical Engineers - etc, pp.558~562 (2002)
- Yun, D. J., "Study of the Damage Monitoring System on Wind Turbine Bl ades", The 2013 World Congress on Advances i n Structural Engineering and Mechanics(ASEM13).,, pp.3549~3565 (2013)
- Ciang, C. C., "S tructural health monitoring for a wind turbine sy stem : a review of damage detection methods", Mead. sci. Technol, 19, pp.121001~ (2008)
- Rafiee, R., "Fai lure analysis of a composite wind turbine blade at the adhesive joint of the trailing edge", Engin eering Failure Analysis, 121, pp.105148~ (2021)
- Yang, J., "Structural investigati on of composite wind turbine blade considering structural collapse in full-scale static tests", Co mposite Structures, 97, pp.15~29 (2013)
- 강병권, "풍력발전용 복합소재 블레이드의 적외선 열화상 검사를 이용한 신뢰성 검증", 신뢰성 응용연구, 14(3), pp.176~181 (2014), 한국신뢰성학회
- Xiao, C., "Fractographic analysis of sandwi ch panels in a composite wind turbine blade usi ng optical microscopy and X-ray computed tomo graphy", Engineering Failure Analysis, 111, pp.104475~ (2020)
- Christopher, Peter, N.A., "I nspection and monitoring of wind turbine bladeembedded wave defects during fatigue testing", Struct. Health Monit, 13(6), pp.1~15 (2014)
- 지수정, "위상배열 초음파탐상기술을 이용한 풍력 복합소재 블레이드의 박리 부위 검출", 비파괴검사학회지, 37(3), pp.183~191 (2017), 한국비파괴검사학회[DOI]
- Al-Khudairi, O., "Full-Sca le Fatigue Testing of a Wind Turbine Blade in flapwise Direction and Examining the Effect of Crack Propagation on the Blade Performance", Materials, 10(10) (2017)
- Garcia, D., "An experi mental study on the data-driven structural healt h monitoring of large wind turbine baldes using a single accelerometer and acturator", Mechanica l Systems and Signal Processing, 127 (2019)
- Awadallah, M., "Effect and detection of cracks on small wind turbine bl ade vibration using special Kriging analysis of s pectral shifts", Measurement, 151, pp.107076~ (2020)
- Joshuva, A., "A data driven approach for condition monitoring of wind turbine blade using vibration signals through bes t-first tree algorithm and functional trees algorit hm: A comparative study", ISA Transactions, 67, pp.160~172 (2017)
- Wang, Y., "Dama ge detection method for wind turbine blades bas ed on dynamics analysis and mode shape differe nce curvature information", Mech. Sys. Signal Pr ocess, 48, pp.351~367 (2014)
- Jang, Y. J., "Identification of Debonding at Spar Cap-Shear Web Joints by Artificial Neural Netw ork Using Natural Frequency Relevant Key Feat ures of Composite Wind Turbine Blades", Appl. Sci, 11(12), pp.5327~ (2021)