Corrosion Fracture Analysis of Compressor Blade Rotor in An Aeroengine
In view of the crack failure of compressor blade in turbofan engine during the test,the strength and vibration characteristic of the blade are analyzed,and it found that blade is in resonance during working.It is abtained that vibration stress of blade without conrrosive pit are measured by non-contact measurement,and it is verified that operation reliabil-ity of non-corroded blade by high-cycle fatigue tests of blade.Fatigue crack growth threshold of blade under corrosion is estimated with Pairs,and the causes of blade cracking are analyzed.The main reason of fracture is that corrosion pit is formed and the blade is failure under the action of high cyclic.Focus on the improvement from the manufacturing pro-cess,the temperature range of tempering is controlled,aluminizing process of the blade surface is increased,and the blade fracture is prevented effectively,the working reliability of the blade is improved.
万方数据
维普
