風力発電機用FRPブレードの落雷破壊対策(S21-6 自然の流体エネルギー利用技術(6),S21 自然の流体エネルギー利用技術)

概要

論文の詳細を見る
FRP blades used for wind power generators occasionally suffer from damages by lightning, and the expenditure and absence fee for blade replacement are tremendous. In this research to obtain the method for lightning protection, aluminum coating was applied. From the results using GFRP test pieces, 1/2 size blade models and the real blades were prepared as specimens with and without aluminum coating, and the effective results of aluminum coated blade on lightning damages were obtained. Aluminum coated blades showed little damage since lightning current is distributed by aluminum and so the lightning energy on the specimen. If the blade specimen is no aluminum coated, the lightning current can go into blades. This causes the blade failure. This failure morphology is close to the blade damage for the wind power generator in Iwate Inaba. However, the experimental condition needs to be considered in near future to obtain the closer blade failure.
一般社団法人日本機械学会の論文
2004-09-04