根据对比试验原理，分析了外来物损伤对叶片疲劳寿命的影响，提出了损伤叶片的允修范围。
The fatigue test of the damaged blades and repaired blades have been carried out respectively. According to the data, the repair scale of FOD blades was proposed.
首先对叶片进气边分区进行了模拟外来物损伤试验，并对外伤叶片和损伤后的修理叶片分别进行了疲劳试验。
Firstly, simulated . experiments of FOD on the leading edge of the blade were performed. Then, the damaged blades were fatigue tested.
首先对叶片进气边分区进行了模拟外来物损伤试验，并对外伤叶片和损伤后的修理叶片分别进行了疲劳试验。
Firstly, simulated . experiments of FOD on the leading edge of the blade were performed. Then, the damaged blades were fatigue tested.
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