The X-ray imaging of 1st-grade high-pressure turbine blade body was performed by computed radiography（CR）with IPU and IPS imaging plate

respectively.The optimized exposure parameters of turbine blade body were determined

and the CR reference images with high resolution were presented

and image quality indicator（IQI）sensitivity and image grey were used to evaluate the image quality.The comparative results of CR imaging show that film replacement by computed radiography with IPU imaging plate for digital X-ray imaging of turbine blade body is feasible.As for an X-ray exposure of multiple blades in film radiography

three turbine blades and four turbine blades were imaged

respectively

in a radiographic inspection by CR.Experimental results show that the radiation intensity of exposure field is uniform

and more turbine blade bodies can be inspected by computed radiography.