外物撞击损伤叶片的模拟试验方法

INVESTIGATION ON SIMULATION OF FOREIGN OBJECT IMPACT DAMAGE TO COMPRESSOR BLADE

流空发动机风扇和压气机叶片在工作中,常常会遭到随高速空气吸入发动机的小而硬的外来物的撞击损伤。这些外来物包括小零件、砂石、维修时的残余物(如保险丝头,开口销头、弹簧垫片等)以及其它一些杂物(象别针、钥匙、小工具等)。

An experimental method for simulation of foreign object impact damage to a compressor blade is investigated. The impact damage mechanism is analyzed by the aid of a scanning electron microscope. A reasonable experimental method is proposed by comparing the bullet damage witb the pendulum impact damage.