Design and performance testing of carbon fiber strengthened composites blade for cryogenic compressor
Aimming at the performance requirements of a cryogenic wind tunnel compressor blade,the resin formula and cu-ring process of the vanes were established,and the 0.6 ratio cryogenic carbon fiber blade was designed and manufactured.The brandishing stiffness,blade root joint strength,high and low temperature natural frequency and cryogenic fatigue performance were tested.The results show that the carbon fibre strengthened composites prototype has good cryogenic performance,including prece-ded 70 kJ/m2 impacting toughness on 77 K temperature,upper 1.5 times maximun centrifugal force blade root strength and more than 100 thousands cryogenic fatigued life,and it has good comprehensive mechanical properties in a wide temperature range of 77～323 K.The design criteria,matrix material,manufacturing process and testing method of the cryogenic carbon fiber blades pro-posed meet the development requirements of large cryogenic compressor carbon fiber blades.
CryogenicCompressor bladeCarbon fibre strengthened compositesPerformance testFatigued test
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