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첨단 NDE 기법을 이용한 풍력터빈 블레이드의 페인팅 두께 모니터링 평가기법
임광희(Kwang-Hee Im),장계림(Gue-Lin Zhang),김우진(Woo-Jin Kim),정예원(Ye-Won Jeong),조철현(Chul-Hyun Cho),김선규(Sun-Kyu Kim),조영태(Young-Tae Cho),우용득(Yong-Deuck Woo) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.11
The composite materials are being utilized on the various areas. Here, the paint used for wind blades was experimentally analyzed which data agreed with known data. Using these characterized material properties, the characteristics were successfully demonstrated through NDE behavior propagating through the painting materials to acquire the refractive index. Both ultrasonic and T-ray techniques were used to analyze the thickness of paint on the GFRP (Glass fiber reinforcement plastics) composites. The non-destructive evaluation (NDE) technique has been established for measuring the thickness. Good results have been obtained in tests on the thickness of the standard painted samples.
Terahertz NDE of the Defects in Thick FRP Composite Materials
Kwang-Hee Im(임광희),Chong-Gui Back(백충걸),Ok-Su Jeong(정옥수),Hyun-Gu Kim(김현구),Yong-Deuck Woo(우용득),D. K Hsu 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.5
A refractive mode technique was suggested for solving a refractive coefficient (n), with which refractive index of GFRP composites, balsa and epoxy. A method of wind turbine blade composites having one and two saw-cuts delaminations was utilized and scanned based on the E-field vector. The time of flight in T-ray using evaluating a T-ray time-domain spectroscopy with the wind turbine blade. Also, the difference of E-field influence was compared with that in the GFRP and CFRP composites.